The Fourth US Naval Observatory CCD Astrograph Catalog (UCAC4)

Abstract

The fourth United States Naval Observatory (USNO) CCD Astrograph Catalog, UCAC4 was released in August 2012 (double-sided DVD and CDS data center Vizier catalog I/322). It is the final release in this series and contains over 113 million objects; over 105 million of them with proper motions. UCAC4 is an updated version of UCAC3 with about the same number of stars also covering all-sky. Bugs were fixed, Schmidt plate survey data were avoided, and precise 5-band photometry were added. Astrograph observations have been supplemented for bright stars by FK6, Hipparcos and Tycho-2 data to compile a UCAC4 star catalog complete to about magnitude R = 16. Epoch 1998 to 2004 positions are obtained from observations with the 20 cm aperture USNO Astrograph's red lens, equipped with a 4k by 4k CCD. Mean positions and proper motions are derived by combining these observations with over 140 ground- and space-based catalogs, including Hipparcos/Tycho and the AC2000.2, as well as unpublished measures of over 5000 plates from other astrographs. For most of the faint stars the first epoch plates from the Southern Proper Motion (SPM) and the Northern Proper Motion (NPM) programs form the basis for proper motions. These data are supplemented by 2MASS near-IR photometry for about 110 million stars and 5-band (B,V,g,r,i) APASS data for over 51 million stars. Thus the published UCAC4, as were UCAC3 and UCAC2, is a compiled catalog with the UCAC observational program being a major component. The positional accuracy of stars in UCAC4 at mean epoch is about 15 to 100 mas per coordinate, depending on magnitude, while the formal errors in proper motions range from about 1 to 10 mas/yr depending on magnitude and observing history. Systematic errors in proper motions are estimated to be about 1 to 4 mas/yr.

14 pages, 25 figures, accepted by AJ

References in corpus (4)

• New High Proper Motion Stars from the Digitized Sky Survey. IV. Completion of the Southern Survey and 170 Additional Stars with pm>0.45 arcsec/yr
• Absolute proper motion of the Galactic open cluster M67
• The Solar Neighborhood. XVIII. Discovery of new proper motion stars with 0.40 arcsec yr^-1 > mu >= 0.18 arcsec yr^-1 between declinations -90 degrees and -47 degrees
• The StarScan plate measuring machine: overview and calibrations

Cited by in corpus (745)

• Gaia Data Release 2. Summary of the contents and survey properties
• Gaia Data Release 3: Summary of the content and survey properties
• The Transiting Exoplanet Survey Satellite
• First Results from High Angular Resolution ALMA Observations Toward the HL Tau Region
• The GALAH Survey: Scientific Motivation
• The TESS Input Catalog and Candidate Target List
• A Gaia DR2 view of the Open Cluster population in the Milky Way
• The Fourteenth Data Release of the Sloan Digital Sky Survey: First Spectroscopic Data from the extended Baryon Oscillation Spectroscopic Survey and from the second phase of the Apache Point Observatory Galactic Evolution Experiment
• The GALAH+ Survey: Third Data Release
• Eight Ultra-faint Galaxy Candidates Discovered in Year Two of the Dark Energy Survey
• BANYAN. XI. The BANYAN $\Sigma$ multivariate Bayesian algorithm to identify members of young associations within 150 pc
• A self-consistent, absolute isochronal age scale for young moving groups in the solar neighbourhood
• The SAMI Galaxy Survey: instrument specification and target selection
• The ASAS-SN Catalog of Variable Stars I: The Serendipitous Survey
• Gaia Data Release 2: Mapping the Milky Way disc kinematics
• Gravitational Lensing Analysis of the Kilo Degree Survey
• The Star-formation History and Accretion-Disk Fraction Among the K-Type Members of the Scorpius-Centaurus OB Association
• SkyMapper Southern Survey: First Data Release (DR1)
• Gaia Data Release 1: Catalogue validation
• The RAdial Velocity Experiment (RAVE): Fourth data release
• The GALAH Survey: Second Data Release
• The APOGEE-2 Survey of the Orion Star Forming Complex II: Six-dimensional structure
• The K2 Ecliptic Plane Input Catalog (EPIC) and Stellar Classifications of 138,600 Targets in Campaigns 1-8
• The RAVE survey: the Galactic escape speed and the mass of the Milky Way
• A ring system detected around the Centaur (10199) Chariklo
• Clusters and mirages: cataloguing stellar aggregates in the Milky Way
• The stellar rotation--activity relationship in fully convective M dwarfs
• The Next Generation Transit Survey (NGTS)
• A survey of the high order multiplicity of nearby solar-type binary stars with Robo-AO
• Gaia Data Release 3: Stellar multiplicity, a teaser for the hidden treasure
• A giant planet undergoing extreme ultraviolet irradiation by its hot massive-star host
• Long-Baseline Interferometric Multiplicity Survey of the Sco-Cen OB Association
• The Hawaii Infrared Parallax Program. II. Young Ultracool Field Dwarfs
• The APOGEE red-clump catalog: Precise distances, velocities, and high-resolution elemental abundances over a large area of the Milky Way's disk
• A lithium depletion boundary age of 21 Myr for the Beta Pictoris moving group
• The Dark Energy Survey Image Processing Pipeline
• Planetary Candidates from the First Year of the K2 Mission
• Project Overview of the Beijing-Arizona Sky Survey
• Rotation in the Pleiades with K2: I. Data and First Results
• Binary Star Orbits. V. The Nearby White Dwarf - Red Dwarf pair 40 Eri BC
• The GALAH Survey: Observational Overview and Gaia DR1 companion
• Chemodynamics of the Milky Way. I. The first year of APOGEE data
• Planets Around Low-Mass Stars (PALMS). IV. The Outer Architecture of M Dwarf Planetary Systems
• Dark Energy Survey Year 3 Results: Photometric Data Set for Cosmology
• The CARMENES search for exoplanets around M dwarfs: Different roads to radii and masses of the target stars
• Dark Energy Survey Year 1 Results: Weak Lensing Shape Catalogues
• The Case for Electron Re-Acceleration at Galaxy Cluster Shocks
• Constraining the Galaxy's dark halo with RAVE stars
• Galactic Archaeology with asteroseismic ages: evidence for delayed gas infall in the formation of the Milky Way disc
• The Second Data Release of the INT Photometric H-Alpha Survey of the Northern Galactic Plane (IPHAS DR2)
• HD 140283: A Star in the Solar Neighborhood that Formed Shortly After the Big Bang
• Gaia Data Release 2: The catalogue of radial velocity standard stars
• The LAMOST Stellar Parameter Pipeline at Peking University --- LSP3
• The Difference Imaging Pipeline for the Transient Search in the Dark Energy Survey
• Identification of 1.4 Million AGNs in the Mid-Infrared using WISE Data
• ACCESS I: An Optical Transmission Spectrum of GJ 1214b Reveals a Heterogeneous Stellar Photosphere
• BANYAN. III. Radial velocity, Rotation and X-ray emission of low-mass star candidates in nearby young kinematic groups
• OSSOS. VII. 800+ trans-Neptunian objects - the complete data release
• The AllWISE Motion Survey and The Quest for Cold Subdwarfs
• UCAC5: New Proper Motions using Gaia DR1
• Zodiacal Exoplanets in Time (ZEIT) IV: seven transiting planets in the Praesepe cluster
• An azimuthal asymmetry in the LkHa 330 disk
• A VLBI Resolution of the Pleiades Distance Controversy
• SMASH - Survey of the MAgellanic Stellar History
• LAMOST Spectroscopic Survey of the Galactic Anti-centre (LSS-GAC): target selection and the first release of value-added catalogues
• The TESS-HERMES survey Data Release 1: high-resolution spectroscopy of the TESS southern continuous viewing zone
• BANYAN. IV. Fundamental parameters of low-mass star candidates in nearby young stellar kinematic groups - Isochronal Age determination using Magnetic evolutionary models
• Transiting hot Jupiters from WASP-South, Euler and TRAPPIST: WASP-95b to WASP-101b
• Discovery of two neighboring satellites in the Carina constellation with MagLiteS
• Three irradiated and bloated hot Jupiters: WASP-76b, WASP-82b & WASP-90b
• The Gaia-ESO Survey: Kinematic structure in the Gamma Velorum Cluster
• Discovery of a dormant 33 solar-mass black hole in pre-release Gaia astrometry
• Planetary system around the nearby M dwarf GJ 357 including a transiting, hot, Earth-sized planet optimal for atmospheric characterization
• Relativistic deflection of background starlight measures the mass of a nearby white dwarf star
• The Solar Neighborhood. XXXIII. Parallax Results from the CTIOPI 0.9m Program: Trigonometric Parallaxes of Nearby Low-Mass Active and Young Systems
• Empirical Isochrones for Low Mass Stars in Nearby Young Associations
• A super-Earth and two sub-Neptunes transiting the nearby and quiet M dwarf TOI-270
• The First U.S. Naval Observatory Robotic Astrometric Telescope Catalog (URAT1)
• Gaia DR2 unravels incompleteness of nearby cluster population: New open clusters in the direction of Perseus
• The Open Cluster Chemical Analysis and Mapping Survey: Local Galactic Metallicity Gradient with APOGEE using SDSS DR10
• Gaia Data Release 1, Pre-processing and source list creation
• Planets Around Low-Mass Stars (PALMS). III. A Young Dusty L Dwarf Companion at the Deuterium-Burning Limit
• A path towards understanding the rotation-activity relation of M dwarfs with K2 mission, X-ray and UV data
• The accretion rates and mechanisms of Herbig Ae/Be stars
• Testing the Asteroseismic Mass Scale Using Metal-Poor Stars Characterized with APOGEE and Kepler
• EL CVn-type binaries - Discovery of 17 helium white dwarf precursors in bright eclipsing binary star systems
• Galactic Archaeology with asteroseismology and spectroscopy: Red giants observed by CoRoT and APOGEE
• Scaling K2. I. Revised Parameters for 222,088 K2 Stars and a K2 Planet Radius Valley at 1.9 $R_{\oplus }$
• Spitzer Phase Curves of KELT-1b and the Signatures of Nightside Clouds in Thermal Phase Observations
• The Solar Neighborhood XXX: Fomalhaut C
• Characterization of the K2-18 multi-planetary system with HARPS: A habitable zone super-Earth and discovery of a second, warm super-Earth on a non-coplanar orbit
• Likely Transiting Exocomets Detected by Kepler
• NGTS-1b: A hot Jupiter transiting an M-dwarf
• A super-Earth and a sub-Neptune orbiting the bright, quiet M3 dwarf TOI-1266
• The Outer Solar System Origins Survey: I. Design and First-Quarter Discoveries
• Comparative performance of selected variability detection techniques in photometric time series
• An Ultra-Faint Galaxy Candidate Discovered in Early Data from the Magellanic Satellites Survey
• The TW Hydrae Association : trigonometric parallaxes and kinematic analysis
• A Survey for New Members of the Taurus Star-Forming Region with the Sloan Digital Sky Survey
• An inner warp in the DoAr 44 T Tauri transition disk
• Re-examining the membership and origin of the Epsilon Cha association
• The IPAC Image Subtraction and Discovery Pipeline for the intermediate Palomar Transient Factory
• No galaxy left behind: accurate measurements with the faintest objects in the Dark Energy Survey
• Geminga's puzzling pulsar wind nebula
• The Greater Taurus-Auriga Ecosystem I: There Is A Distributed Older Population
• Star catalog position and proper motion corrections in asteroid astrometry
• LACEwING: A New Moving Group Analysis Code
• APERO: A PipelinE to Reduce Observations -- Demonstration with SPIRou
• From Discovery to the First Month of the Type II Supernova 2023ixf: High and Variable Mass Loss in the Final Year before Explosion
• New Pre-main-Sequence Stars in the Upper Scorpius Subgroup of Sco-Cen
• Spectroscopic Confirmation of Young Planetary-Mass Companions on Wide Orbits
• The Multiplicity of Massive Stars: A High Angular Resolution Survey with the HST Fine Guidance Sensor
• RCSLenS: The Red Cluster Sequence Lensing Survey
• Kepler-432: a red giant interacting with one of its two long period giant planets
• Galactic kinematics and dynamics from RAVE stars
• A High-Resolution X-Ray and Optical Study of SN 1006: Asymmetric Expansion and Small-Scale Structure in a Type Ia Supernova Remnant
• Zodiacal Exoplanets in Time (ZEIT) V: A Uniform Search for Transiting Planets in Young Clusters Observed by K2
• Pluto's atmosphere from the 29 June 2015 ground-based stellar occultation at the time of the New Horizons flyby
• WASP-South transiting exoplanets: WASP-130b, WASP-131b, WASP-132b, WASP-139b, WASP-140b, WASP-141b & WASP-142b
• A WISE Survey of Circumstellar Disks in Taurus
• Three Ancient Halo Subgiants: Precise Parallaxes, Compositions, Ages, and Implications for Globular Clusters
• The 2-degree Field Lensing Survey: design and clustering measurements
• A comprehensive search for stellar bowshock nebulae in the Milky Way: a catalog of 709 mid-infrared selected candidates
• In the thick of it: metal-poor disc stars in RAVE
• The Massive and Distant Clusters of WISE Survey. I: Survey Overview and a Catalog of >2000 Galaxy Clusters at z~1
• The slight spin of the old stellar halo
• The CARMENES search for exoplanets around M dwarfs. Two planets on the opposite sides of the radius gap transiting the nearby M dwarf LTT 3780
• BANYAN. IX. The Initial Mass Function and Planetary-Mass Object Space Density of the TW Hya Association
• Comparing Neutron Star Kicks to Supernova Remnant Asymmetries
• Throwing Icebergs at White Dwarfs
• Determination of the Local Standard of Rest using the LSS-GAC DR1
• A Multi-Membership Catalogue for 1876 Open Clusters using UCAC4 data
• VISION - Vienna survey in Orion I. VISTA Orion A Survey
• Galactic Archaeology with asteroseismic ages. II. Confirmation of a delayed gas infall using Bayesian analysis based on MCMC methods
• Carbon-Enhanced Metal-Poor Stars: CEMP-s and CEMP-no Sub-Classes in the Halo System of the Milky Way
• A nearby transiting rocky exoplanet that is suitable for atmospheric investigation
• HADES RV Programme with HARPS-N at TNG. VII. Rotation and activity of M-Dwarfs from time-series high-resolution spectroscopy of chromospheric indicators
• The Large Synoptic Survey Telescope as a Near-Earth Object Discovery Machine
• The KELT Follow-Up Network and Transit False Positive Catalog: Pre-vetted False Positives for TESS
• Cluster Difference Imaging Photometric Survey. I. Light Curves of Stars in Open Clusters from TESS Sectors 6 & 7
• Spitzer Matching survey of the UltraVISTA ultra-deep Stripes (SMUVS): Full-mission IRAC Mosaics and Catalogs
• The First Tidally Disrupted Ultra-Faint Dwarf Galaxy? - Spectroscopic Analysis of the Tucana III Stream
• Characterising Open Clusters in the solar neighbourhood with the Tycho-Gaia Astrometric Solution
• The rise and fall of star-formation in $\mathbf{z}\sim 0.2$ merging galaxy clusters
• X-ray and Optical Monitoring of State Transitions in MAXI J1820+070
• K2-136: A Hyades Binary Star with a Neptune-sized Planet
• The ELM Survey. VI. Eleven New Double Degenerates
• Metal-poor stars towards the Galactic bulge - a population potpourri
• SIMP J013656.5+093347 is Likely a Planetary-Mass Object in the Carina-Near Moving Group
• Stirring in massive, young debris discs from spatially resolved Herschel images
• Mass and galaxy distributions of four massive galaxy clusters from Dark Energy Survey Science Verification data
• Ages and masses of million Galactic disk main sequence turn-off and sub-giant stars from the LAMOST Galactic spectroscopic surveys
• A Near-Infrared Spectroscopic Survey of 886 Nearby M Dwarfs
• HAT-P-65b and HAT-P-66b: Two Transiting Inflated Hot Jupiters and Observational Evidence for the Re-Inflation of Close-In Giant Planets
• M31N 2008-12a - the remarkable recurrent nova in M31: Pan-chromatic observations of the 2015 eruption
• The First Hypervelocity Star from the LAMOST Survey
• High-resolution abundance analysis of red giants in the globular cluster NGC 6522
• unWISE Coadds: The Five-year Data Set
• Identifying close binary central stars of PN with Kepler
• Stellar activity with LAMOST - II. Chromospheric activity in open clusters
• Orbit determination of Transneptunian objects and Centaurs for the prediction of stellar occultations
• Pulsating in unison at optical and X-ray energies: simultaneous high-time resolution observations of the transitional millisecond pulsar PSR J1023+0038
• New binaries among UV-selected, hot subdwarf stars and population properties
• The Gaia DR1 Mass-Radius Relation for White Dwarfs
• Bright Metal-Poor Stars from the Hamburg/ESO Survey. II. A Chemodynamical Analysis
• Carbon stars identified from LAMOST DR4 using Machine Learning
• The Gaia-ESO Survey: a quiescent Milky Way with no significant dark/stellar accreted disc
• Characterizing the performance of the NIRC2 vortex coronagraph at W.M. Keck Observatory
• Discrepancies between isochrone fitting and gyrochronology for exoplanet host stars?
• A Spectroscopic Survey of Massive Stars in M31 and M33
• A Unified tool to estimate Distances, Ages and Masses (UniDAM) from spectrophotometric data
• WASP-94 A and B planets: hot-Jupiter cousins in a twin-star system
• Early Observations of the Type Ia Supernova iPTF 16abc: A Case of Interaction with Nearby, Unbound Material and/or Strong Ejecta Mixing
• Discovery of a Metal-Poor Field Giant with a Globular Cluster Second-Generation Abundance Pattern
• Ships Passing in the Night: Spectroscopic Analysis of Two Ultra-Faint Satellites in the Constellation Carina
• New Pleiades Eclipsing Binaries and a Hyades Transiting System Identified by K2
• The similarity of the stellar mass fractions of galaxy groups and clusters
• High Precision Photometry for K2 Campaign 1
• New low-mass members of the Octans stellar association and an updated 30-40 Myr lithium age
• Spitzer Secondary Eclipse Observations of Five Cool Gas Giant Planets and Empirical Trends in Cool Planet Emission Spectra
• K2 Discovery of Young Eclipsing Binaries in Upper Scorpius: Direct Mass and Radius Determinations for the Lowest Mass Stars and Initial Characterization of an Eclipsing Brown Dwarf Binary
• New atmospheric parameters and spectral interpolator for the MILES cool stars
• EPIC 219388192 b - an inhabitant of the brown dwarf desert in the Ruprecht 147 open cluster
• A pair of Sub-Neptunes transiting the bright K-dwarf TOI-1064 characterised with CHEOPS
• Is the Milky Way still breathing? RAVE-Gaia streaming motions
• A millisecond pulsar in an extremely wide binary system
• The GAPS Programme with HARPS-N@TNG V. A comprehensive analysis of the XO-2 stellar and planetary systems
• Spitzer Observations of GJ3470b: a Very Low-density Neptune-size Planet Orbiting a Metal-rich M dwarf
• Three Small Super-Earths Transiting the nearby star GJ 9827
• Mapping the Milky Way with LAMOST I: Method and overview
• Discovery of an OB Runaway Star Inside SNR S147
• An accurate geometric distance to the compact binary SS Cygni vindicates accretion disc theory
• Sub-stellar Companions and Stellar Multiplicity in the Taurus Star-Forming Region
• Chemistry of the Most Metal-poor Stars in the Bulge and the z > 10 Universe
• High-energy irradiation and mass loss rates of hot Jupiters in the solar neighborhood
• A WISE Survey of Circumstellar disks in the Upper Scorpius Association
• Ages and Masses of 0.64 million Red Giant Branch stars from the LAMOST Galactic Spectroscopic Survey
• Characterizing the High-Velocity Stars of RAVE: The Discovery of a Metal-Rich Halo Star Born in the Galactic Disk
• Palomar 5 and its Tidal Tails: A Search for New Members in the Tidal Stream
• Proper Motions and Trajectories for 16 Extreme Runaway and Hypervelocity Stars
• The discovery of WASP-151b, WASP-153b, WASP-156b: Insights on giant planet migration and the upper boundary of the Neptunian desert
• Surprisingly different starspot distributions on the near equal-mass equal-rotation-rate stars in the M dwarf binary GJ 65 AB
• Potassium detection in the clear atmosphere of a hot-Jupiter: FORS2 transmission spectroscopy of WASP-17b
• Stellar Characterization of M-dwarfs from the APOGEE Survey: A Calibrator Sample for the M-dwarf Metallicities
• High-resolution Imaging of Transiting Extrasolar Planetary systems (HITEP). I. Lucky imaging observations of 101 systems in the southern hemisphere
• Gaia Data Release 3: Reflectance spectra of Solar System small bodies
• Photodynamical analysis of the triply eclipsing hierarchical triple system EPIC 249432662
• catsHTM - A tool for fast accessing and cross-matching large astronomical catalogs
• TOI-1452 b: SPIRou and TESS reveal a super-Earth in a temperate orbit transiting an M4 dwarf
• Complex Rotational Modulation of Rapidly Rotating M-Stars Observed with TESS
• Stellar flares detected with the Next Generation Transit Survey
• No Conclusive Evidence for Transits of Proxima b in MOST photometry
• Size and Shape Constraints of (486958) Arrokoth from Stellar Occultations
• Planets Around Low-Mass Stars (PALMS). VI. Discovery of a Remarkably Red Planetary-Mass Companion to the AB Dor Moving Group Candidate 2MASS J22362452+4751425
• The LMC geometry and outer stellar populations from early DES data
• Tentative Evidence for Relativistic Electrons Generated by the Jet of the Young Sun-like Star DG Tau
• Reaching the boundary between stellar kinematic groups and very wide binaries. III. Sixteen new stars and eight new wide systems in the beta Pictoris moving group
• A planetary system with two transiting mini-Neptunes near the radius valley transition around the bright M dwarf TOI-776
• The CARMENES search for exoplanets around M dwarfs. A Neptune-mass planet traversing the habitable zone around HD 180617
• HATS-60b - HATS-69b: Ten Transiting Planets From HATSouth
• Unveiling new members in five nearby young moving groups
• IRC-10414: a bow-shock-producing red supergiant star
• Astrometry with Hubble Space Telescope Fine Guidance Sensors - A Review
• KELT-10b: The First Transiting Exoplanet from the KELT-South Survey -- A Hot Sub-Jupiter Transiting a V = 10.7 Early G-Star
• Hot Subdwarf Stars Observed in LAMOST DR1 - Atmospheric parameters from single-lined spectra
• Two temperate Earth-mass planets orbiting the nearby star GJ1002
• Rotation-activity relations and flares of M dwarfs with K2 long- and short-cadence data
• Exploring Halo Substructure with Giant Stars: The Nature of the Triangulum-Andromeda Stellar Features
• Gaia Data Release 1. Cross-match with external catalogues - Algorithm and results
• High-contrast imaging of HD 163296 with the Keck/NIRC2 L'-band vortex coronograph
• Global survey of star clusters in the Milky Way IV. 63 new open clusters detected by proper motions
• Ground-based astrometry with wide field imagers. V. Application to near-infrared detectors: HAWK-I@VLT/ESO
• A remarkable recurrent nova in M31: Discovery and optical/UV observations of the predicted 2014 eruption
• Star catalog position and proper motion corrections in asteroid astrometry II: The Gaia era
• TOI-222: a single-transit TESS candidate revealed to be a 34-day eclipsing binary with CORALIE, EulerCam and NGTS
• Deep imaging search for planets forming in the TW Hya protoplanetary disk with the Keck/NIRC2 vortex coronagraph
• A Gaia-PS1-SDSS (GPS1) Proper Motion Catalog Covering 3/4 of the Sky
• 1FGL J1417.7-4407: A likely gamma-ray bright binary with a massive neutron star and a giant secondary
• Zodiacal Exoplanets in Time (ZEIT) II. A "Super-Earth" Orbiting a Young K Dwarf in the Pleiades Neighborhood
• Toward Understanding the B[e] Phenomenon. VII. AS 386, a single-lined binary with a candidate black hole component
• A lucky imaging multiplicity study of exoplanet host stars II
• A detailed analysis of the Gl 486 planetary system
• Chemical separation of disc components using RAVE
• EPIC 210894022b - A short period super-Earth transiting a metal poor, evolved old star
• The CARMENES search for exoplanets around M dwarfs: Nine new double-line spectroscopic binary stars
• A spectroscopic census in young stellar regions: the Sigma Orionis cluster
• A large H$\alpha$ survey of star formation in relaxed and merging galaxy cluster environments at $z\sim 0.15-0.3$
• Astrometric evidence for a population of dislodged AGN
• The Kepler view of magnetic chemically peculiar stars
• The face-on disk of MAXI J1836-194
• Exomoons in the habitable zones of M dwarfs
• Prediction of a red nova outburst in KIC 9832227
• The Age and Distance of the Kepler Open Cluster NGC 6811 from an Eclipsing Binary, Turnoff Star Pulsation, and Giant Asteroseismology
• HATS-74Ab, HATS-75b, HATS-76b and HATS-77b: Four Transiting Giant Planets around K and M Dwarfs
• The Gaia-ESO Survey: Target selection of open cluster stars
• The Elusive Majority of Young Moving Groups. I. Young Binaries and Lithium-Rich Stars in the Solar Neighborhood
• A Significant Over-Luminosity in the Transiting Brown Dwarf CWW 89Ab
• Improved Photometry for the DASCH Pipeline
• Precise astrometry and diameters of asteroids from occultations -- a data-set of observations and their interpretation
• Pan-STARRS1: Galaxy Clustering in the Small Area Survey 2
• Comprehensive abundance analysis of red giants in the open clusters NGC 1342, 1662, 1912, 2354 and 2447
• APO & SMARTS flare star campaign observations I. Blue wing asymmetries in chromospheric lines during mid M dwarf flares from simultaneous spectroscopic and photometric observation data
• Metallicity determination of M dwarfs - Expanded parameter range in metallicity and effective temperature
• A Pan-STARRS1 study of the relationship between wide binarity and planet occurrence in the Kepler field
• A large narrow band H$\alpha$ survey at $z\sim 0.2$: the bright end of the luminosity function, cosmic variance and clustering across cosmic time
• Simultaneous Multiwavelength Flare Observations of EV Lacertae
• New Parallaxes and a Convergence Analysis for the TW Hya Association
• Young Stars with SALT
• MASTER OT J004207.99+405501.1/M31LRN 2015 Luminous Red Nova in M31: Discovery, Light Curve, Hydrodynamics, Evolution
• A multiplicity study of transiting exoplanet host stars. I. High-contrast imaging with VLT/SPHERE
• The Gould's Belt Very Large Array Survey III. The Orion region
• A Modern Search for Wolf-Rayet Stars in the Magellanic Clouds. II. A Second Year of Discoveries
• Vertical velocities from proper motions of red clump giants
• The Influence of a Kinematically Cold Young Component on Disc-Halo Decompositions in Spiral Galaxies: Insights from Solar Neighbourhood K-giants
• KELT-25b and KELT-26b: A Hot Jupiter and a Substellar Companion Transiting Young A-stars Observed by TESS
• Metal-poor stars observed with the automated planet finder telescope. I. Discovery of five carbon-enhanced metal-poor stars from LAMOST
• The Host Stars of Keplers Habitable Exoplanets: Superflares, Rotation and Activity
• Colour-magnitude diagrams of transiting Exoplanets - II. A larger sample from photometric distances
• Optical Identification of He White Dwarfs Orbiting Four Millisecond Pulsars in the Globular Cluster 47 Tucanae
• The Ca II triplet in red giant spectra: [Fe/H] determinations and the role of [Ca/Fe]
• Narrow-K-Band Observations of the GJ 1214 System
• X-ray, Optical, and Near-infrared Monitoring of the New X-ray Transient MAXI J1820+070 in the Low/hard State
• The R-Process Alliance: Spectroscopic Follow-up of Low-Metallicity Star Candidates from the Best & Brightest Survey
• The kinematics of the white dwarf population from the SDSS DR12
• Mass and period limits on the ringed companion transiting the young star J1407
• The selection function of the RAVE survey
• The Gaia-ESO Survey: Structural and dynamical properties of the young cluster Chamaeleon I
• The HD 260655 system: Two rocky worlds transiting a bright M dwarf at 10 pc
• Monitoring the large-scale magnetic field of AD~Leo with SPIRou, ESPaDOnS and Narval. Toward a magnetic polarity reversal?
• High-precision astrometry with VVV. I. An independent reduction pipeline for VIRCAM@VISTA
• A stellar census of the nearby, young 32 Orionis group
• A Search for L/T Transition Dwarfs With Pan-STARRS1 and WISE. III. Young L Dwarf Discoveries and Proper Motion Catalogs in Taurus and Scorpius-Centaurus
• A comprehensive study of the open cluster NGC 6866
• X-ray and Optical Study of the Gamma-ray Source 3FGL J0838.8$-$2829: Identification of a Candidate Millisecond Pulsar Binary and an Asynchronous Polar
• K2-146: Discovery of Planet c, Precise Masses from Transit Timing, and Observed Precession
• An all-sky catalog of solar-type dwarfs for exoplanetary transit surveys
• Optical Studies of 15 Hard X-ray Selected Cataclysmic Binaries
• Metal-poor Stars Observed with the Automated Planet Finder Telescope. II. Chemodynamical Analysis of Six Low-Metallicity Stars in the Halo System of the Milky Way
• Purveyors of fine halos. II. Chemodynamical association of halo stars with Milky Way globular clusters
• Discovery of Resolved Magnetically Split Lines in SDSS/APOGEE Spectra of 157 Ap/Bp Stars
• The crucial role of higher-order multiplicity in wide binary formation: A case study using the $\beta$-Pictoris moving group
• M dwarf luminosity, radius, and $\alpha$-enrichment from $I$-band spectral features
• Planets Around Low-Mass Stars (PALMS). V. Age-Dating Low-Mass Companions to Members and Interlopers of Young Moving Groups
• Inferred timescales for common envelope ejection using wide astrometric companions
• Three-dimensional structure of the Upper Scorpius association with the Gaia first data release
• A Large Sample of Am Candidates from LAMOST Data Release 1
• Stellar X-ray activity across the Hertzsprung-Russell diagram. I. Catalogs
• Chemical trends in the Galactic Halo with APOGEE data
• AD Leonis: Radial velocity signal of stellar rotation or spin-orbit resonance?
• A 1.55 R${}_{\oplus }$ habitable-zone planet hosted by TOI-715, an M4 star near the ecliptic South Pole
• Chemical Abundances in a Sample of Red Giants in the Open Cluster NGC 2420 from APOGEE
• Contact Binaries as Viable Distance Indicators: New, Competitive (V)JHKs Period-Luminosity Relations
• Searching for tidal tails around $\omega$ Centauri using RR Lyrae Stars
• WD 1145+017: Optical Activity During 2016-2017 and Limits on the X-Ray Flux
• Optical and X-ray Studies of Ten X-ray Selected Cataclysmic Binaries
• Estimating the Ultraviolet Emission of M dwarfs with Exoplanets from Ca II and H$\alpha$
• Intrinsic Lyman alpha Profiles of High-Velocity G, K, and M Dwarfs
• Proper Motion and Timing of Two Unusual Pulsars: Calvera and 1E 1207.4-5209
• WD 1202-024: The Shortest-Period Pre-Cataclysmic Variable
• Discovery of a Redback Millisecond Pulsar Candidate: 3FGL J0212.1+5320
• Age spreads and the temperature dependence of age estimates in Upper Sco
• The Araucaria Project. Accurate stellar parameters and distance to evolved eclipsing binary ASAS J180057-2333.8 in Sagittarius Arm
• Optical Studies of Thirteen Hard X-ray Selected Cataclysmic Binaries from the Swift-BAT Survey
• Extracting Microlensing Signals from K2 Campaign 9
• The X-ray light curve of the massive colliding wind Wolf-Rayet + O binary WR21a
• A survey for planetary-mass brown dwarfs in the Chamaeleon I star-forming region
• The ESA Gaia Archive: Data Release 1
• The JCMT Gould Belt Survey: Evidence for radiative heating in Serpens MWC 297 and its influence on local star formation
• Parallax Results From URAT Epoch Data
• A nearby young M dwarf with a wide, possibly planetary-mass companion
• System IMF of the 25 Ori Group from Planetary-Mass Objects to Intermediate/High-Mass Stars
• NGTS-6b: An Ultra Short Period Hot-Jupiter Orbiting an Old K Dwarf
• The compact multiple system HIP 41431
• A Survey of Irradiated Pillars, Globules, and Jets in the Carina Nebul
• Discovery of an unusual bright eclipsing binary with the longest known period: TYC 2505-672-1 / MASTER OT J095310.04+335352.8
• RR Lyrae stars and the horizontal branch of NGC 5904 (M5)
• The perihelion activity of comet 67P/Churyumov-Gerasimenko as seen by robotic telescopes
• HAZMAT. VII. The Evolution of Ultraviolet Emission with Age and Rotation for Early M Dwarf Stars
• The VISTA Orion mini-survey: star formation in the Lynds 1630 North cloud
• The Optical Counterpart to the Accreting Millisecond X-ray Pulsar SAX J1748.9-2021 in the Globular Cluster NGC 6440
• South Galactic Cap u-band Sky Survey (SCUSS): Data Reduction
• Effects of the selection function on metallicity trends in spectroscopic surveys of the Milky Way
• Observation of Two New L4 Neptune Trojans in the Dark Energy Survey Supernova Fields
• The First Data Release of the Beijing-Arizona Sky Survey
• Wide-Field Optical Spectroscopy of Abell 133: A Search for Filaments Reported in X-ray Observations
• The kinematic signature of the Galactic warp in Gaia DR1 - I. The Hipparcos subsample
• 1SWASP J093010.78+533859.5: A Possible Hierarchical Quintuple System
• Radio-Optical Reference Frame Link Using the US Naval Observatory Astrograph and Deep CCD Imaging
• High-resolution Imaging of Transiting Extrasolar Planetary systems (HITEP). II. Lucky Imaging results from 2015 and 2016
• Spitzer Observations of the North Ecliptic Pole
• Saturn's inner satellites : orbits, masses and the chaotic motion of Atlas from new Cassini imaging observations
• Shallow transit follow-up from NGTS: simultaneous observations of HD106315 with 11 identical telescopes
• Revisiting the variable star population in NGC~6229 and the structure of the Horizontal Branch
• Small Bodies Near and Far (SBNAF): a benchmark study on physical and thermal properties of small bodies in the Solar System
• Astrometric positions for 18 irregular satellites of giant planets from 23 years of observations
• Westerlund 1 under the light of Gaia EDR3: Distance, isolation, extent, and a hidden population
• Speckle Interferometry of Red Dwarf Stars
• Magnetic field and prominences of the young, solar-like, ultra-rapid rotator V530 Per
• A revised moving cluster distance to the Pleiades open cluster
• Data preparation for asteroseismology with TESS
• Brightness variations of the FUor-type eruptive star V346 Nor
• An UXor among FUors: extinction related brightness variations of the young eruptive star V582 Aur
• HD 202206 : A Circumbinary Brown Dwarf System
• RAVE stars tidally stripped/ejected from $\omega$ Centauri globular cluster
• The earliest O-type eclipsing binary in the Small Magellanic Cloud, AzV 476: A comprehensive analysis reveals surprisingly low stellar masses
• Planet Hunters TESS IV: A massive, compact hierarchical triple star system TIC 470710327
• Two Hot Jupiters from K2 Campaign 4
• Nine new open clusters within 500 pc from the Sun
• Revisiting the Stellar Velocity Ellipsoid - Hubble type relation: observations versus simulations
• Open clusters and associations in the Gaia era
• Discovery and mass measurement of the hot, transiting, Earth-sized planet GJ 3929 b
• Asteroid (3200) Phaethon: colors, phase curve, limits on cometary activity and fragmentation
• The Spitzer-HETDEX Exploratory Large Area Survey II: Dark Energy Camera and Spitzer/IRAC Multiwavelength Catalog
• Investigating dynamical properties of evolved Galactic open clusters
• UCAC4 Nearby Star Survey: A Search for Our Stellar Neighbors
• Red Clump Stars from the LAMOST data I: identification and distance
• Highly dynamically evolved intermediate-age open clusters
• Gaia Focused Product Release: Asteroid orbital solution. Properties and assessment
• Rotation Periods of Wide Binaries in the Kepler Field
• HD 99458: First time ever Ap-type star as a $\delta$ Scuti pulsator in a short period eclipsing binary?
• A Bright Short Period M-M Eclipsing Binary from the KELT Survey: Magnetic Activity and the Mass-Radius Relationship for M-dwarfs
• A Transient Transit Signature Associated with the Young Star RIK-210
• On the Identification of Wide Binaries in the Kepler Field
• Observations of the M82 SN 2014J with the Kilodegree Extremely Little Telescope
• The CARMENES search for exoplanets around M dwarfs: Spectroscopic orbits of nine M-dwarf multiple systems, including two triples, two brown dwarf candidates, and one close M-dwarf-white dwarf binary
• Variable Stars Observed in the Galactic Disk by AST3-1 from Dome A, Antarctica
• A Search for short-period Rocky Planets around WDs with the Cosmic Origins Spectrograph (COS)
• X-Shooting ULLYSES: Massive Stars at low metallicity II. DR1: Advanced optical data products for the Magellanic Clouds
• A search for pulsations in the HgMn star HD 45975 with CoRoT photometry and ground-based spectroscopy
• Two super-Earths at the edge of the habitable zone of the nearby M dwarf TOI-2095
• The local standard of rest from data on young objects with account for the Galactic spiral density wave
• Simultaneous spectral energy distribution and near-infrared interferometry modeling of HD 142666
• Asteroseismology of luminous red giants with Kepler. II. Dependence of mass loss on pulsations and radiation
• Kinematic Analysis of Solar-Neighborhood Stars Based on RAVE4 Data
• A code for robust astrometric solution of astronomical images
• A method of immediate detection of objects with a near-zero apparent motion in series of CCD-frames
• The imprints of the Galactic bar on the thick disk with RAVE
• Deep secrets of intermediate-mass giants and supergiants: Models with rotation seem to overestimate mixing effects on the surface abundances of C, N, and Na
• CCD UBV photometric study of five open clusters - Dolidze 36, NGC 6728, NGC 6800, NGC 7209 and Platais 1
• ACCESS: Confirmation of a Clear Atmosphere for WASP-96b and a Comparison of Light Curve Detrending Techniques
• Local Stellar Kinematics from RAVE data - VII. Metallicity Gradients from Red Clump Stars
• Light curves of the latest FUor: Indication of a close binary
• The First High-Phase Observations of a KBO: New Horizons Imaging of (15810) 1994 JR1 from the Kuiper Belt
• Clusterix 2.0. A Virtual Observatory tool to estimate cluster membership probability
• The Late-Type Extension to MoVeRS (LaTE-MoVeRS): Proper motion verified low-mass stars and brown dwarfs from SDSS, 2MASS, and WISE
• Update of membership and mean proper motion of open clusters from UCAC5 catalog
• A GALEX based search for the sparse young stellar population in the Taurus-Aurigae star forming region
• Large proper motion of the Thorne-Żytkow object candidate HV 2112 reveals its likely nature as foreground Galactic S-star
• Multiplicity of disc-bearing stars in Upper Scorpius and Upper Centaurus-Lupus
• New insights into the outflows from R Aquarii
• Constraints on the structure and seasonal variations of Triton's atmosphere from the 5 October 2017 stellar occultation and previous observations
• Multiply eclipsing candidates from the TESS satellite
• Cepheid Kinematics and the Galactic Warp
• SOAR optical and near-infrared spectroscopic survey of newly discovered massive stars in the periphery of Galactic Massive star clusters I - NGC3603
• The Nearest Neutron Star Candidate in a Binary Revealed by Optical Time-domain Surveys
• Rotational and Radial Velocities of 1.3-2.2 M_Sun Red Giants in Open Clusters
• Bayesian assessment of moving group membership: importance of models and prior knowledge
• Pluto's ephemeris from ground-based stellar occultations (1988-2016)
• Shape models of asteroids based on lightcurve observations with BlueEye600 robotic observatory
• Characterization of the K2-19 Multiple-Transiting Planetary System via High-Dispersion Spectroscopy, AO Imaging, and Transit Timing Variations
• The W UMa binaries USNO-A2.0 1350-17365531, V471 Cas, V479 Lac and V560 Lac: light curve solutions and global parameters based on the GAIA distances
• Discovery of one neutron star candidate from radial velocity monitoring
• Towards the origin of the radio emission in AR Sco, the first radio-pulsing white dwarf binary
• TOI-4010: A System of Three Large Short-Period Planets With a Massive Long-Period Companion
• Very Low Mass Stellar and Substellar Companions to Solar-Like Stars From MARVELS V: A Low Eccentricity Brown Dwarf from the Driest Part of the Desert, MARVELS-6b
• Will Comet 209P/LINEAR Generate the Next Meteor Storm?
• The Gaia-ESO Survey: The analysis of the hot-star spectra
• Discovery of New Companions to High Proper Motion Stars from the VVV Survey
• Precise CCD positions of Triton in 2014-2016 using the newest Gaia DR1 star catalogue
• Identification of Globular Cluster Stars in RAVE data II: Extended tidal debris around NGC 3201
• The blue supergiant MN18 and its bipolar circumstellar nebula
• ACCESS: Confirmation of no potassium in the atmosphere of WASP-31b
• Evidence for Halo Kinematics among Cool Carbon-Rich Dwarfs
• Dynamical Masses of Young Stars II: Young Taurus Binaries Hubble~4, FF~Tau, and HP~Tau/G3
• New Red Jewels in Coma Berenices
• Ground-based optical transmission spectrum of the hot Jupiter HAT-P-1b
• TYC 3159-6-1: a runaway blue supergiant
• HATS-47b, HATS-48Ab, HATS-49b and HATS-72b: Four Warm Giant Planets Transiting K Dwarfs
• A photometric study of the Open Cluster II: Stellar population and dynamical evolution in NGC 559
• Precise mass determination for the keystone sub-Neptune planet transiting the mid-type M dwarf G 9-40
• The Inner Disk and Accretion Flow of the Close Binary DQ Tau
• GJ 806 (TOI-4481): A bright nearby multi-planetary system with a transiting hot, low-density super-Earth
• SN 2020bio: A Double-peaked, H-poor Type IIb Supernova with Evidence of Circumstellar Interaction
• Photoelectric search for peculiar stars in open clusters. XV. Feinstein 1, NGC 2168, NGC 2323, NGC 2437, NGC 2547, NGC 4103, NGC 6025, NGC 6633, Stock 2, and Trumpler 2
• Image Subtraction Reduction of Open Clusters M35 & NGC 2158 In The K2 Campaign-0 Super-Stamp
• Metal-Rich RRc stars in the Carnegie RR Lyrae Survey
• Gemini and Lowell Observations of 67P/Churyumov-Gerasimenko During the Rosetta Mission
• The CARMENES search for exoplanets around M dwarfs Detection of a mini-Neptune around LSPM J2116+0234 and refinement of orbital parameters of a super-Earth around GJ 686 (BD+18 3421)
• Identifying Bound Stellar Companions to Kepler Exoplanet Host Stars Using Speckle Imaging
• The shared evaporation history of three sub-Neptunes spanning the radius-period valley of a Hyades star
• The Nucleus of the Planetary Nebula EGB 6 as a Post-Mira Binary
• A Global Correction to PPMXL Proper Motions
• A search for new hot subdwarf stars by means of Virtual Observatory tools II
• Kinematics of the Optically Visible YSOs Toward the Orion B Molecular Cloud
• Cardinal kinematics: I. Rotation fields of the APOGEE Survey
• New halo stars of the Galactic globular clusters M3 and M13 in the LAMOST DR1 Catalog
• A Critique of the Spite Plateau, and the Astration of Primordial Lithium
• A new photometric and dynamical study of the eclipsing binary star HW Virginis
• Local Stellar Kinematics from RAVE data - VI. Metallicity Gradients Based on the F-G Main-sequence Stars
• Gaia Focused Product Release: Sources from Service Interface Function image analysis -- Half a million new sources in omega Centauri
• Photometric calibration for the Beijing-Arizona Sky Survey and Mayall z-band Legacy Survey
• Ultracool dwarf benchmarks with \emph{Gaia} primaries
• Proper motions of young stars in Chamaeleon. II. New kinematical candidate members of Chamaeleon I and II
• USco1621 B and USco1556 B: Two wide companions at the deuterium-burning mass limit in Upper Scorpius
• Motion Verified Red Stars (MoVeRS): A Catalog of Proper Motion Selected Low-mass Stars from WISE, SDSS, and 2MASS
• Apsidal motion in massive eccentric binaries: The case of CPD-41${}^{\circ }$7742, and HD 152218 revisited
• The variability behavior of CoRoT M-giant Stars
• WASP-135b: a highly irradiated, inflated hot Jupiter orbiting a G5V star
• JWST observations of stellar occultations by solar system bodies and rings
• Planetesimals Around Stars with TESS (PAST): II. An M Dwarf "Dipper" Star with a Long-Lived Disk in the TESS Continuous Viewing Zone
• A Quintuple Star System Containing Two Eclipsing Binaries
• HATS-37Ab and HATS-38b: Two Transiting Hot Neptunes in the Desert
• Towards a comprehensive knowledge of the open cluster Haffner 9
• Discovery of wide low and very low-mass binary systems using Virtual Observatory tools
• Phoebe's orbit from ground-based and space-based observations
• The universality of the rapid neutron-capture process revealed by a possible disrupted dwarf galaxy star
• A Survey for High-Mass Eclipsing Binaries
• The M dwarf problem: Fe and Ti abundances in a volume-limited sample of M dwarf stars
• The OPD Photometric Survey of Open Clusters II. robust determination of the fundamental parameters of 24 open clusters
• Statistics of wide pre-main sequence binaries in the Orion OB1 association
• Extended Red Objects and Stellar Wind Bow Shocks in the Carina Nebula
• VVV High proper motion stars I. The catalogue of bright Ks < 13.5 stars
• Multiplicity of stars with planets in the solar neighbourhood
• Two planetary systems with transiting Earth-size and super-Earth planets orbiting late-type dwarf stars
• The astrometric Gaia-FUN-SSO observation campaign of 99 942 Apophis
• Ghosts of Milky Way's past: the globular cluster ESO 37-1 (E 3)
• Refining the origins of the gamma-ray binary 1FGL J1018.6-5856
• HST astrometry in the 30 Doradus region: measuring proper motions of individual stars in the Large Magellanic Cloud
• MagAO: Status and Science
• Comprehensive UV and Optical spectral analysis of Cygnus X-1: Stellar and wind parameters, abundances, and evolutionary implications
• New cluster members and halo stars of the Galactic globular cluster NGC 1851
• A cautionary tale of interpreting O-C diagrams: period instability in a classical RR Lyr Star Z CVn mimicking as a distant companion
• Optical and radio astrometry of the galaxy associated with FRB150418
• Wide-field adaptive optics performance in cosmological deep fields for multi-object spectroscopy with the European Extremely Large Telescope
• CTIO, ROSAT HRI and Chandra ACIS Observations of the Archetypical Mixed-Morphology Supernova Remnant W28 (G6.4-0.1)
• The proper motion of HV2112: A TŻO candidate in the SMC
• Stellar Flares in the CSTAR Field: Results from the 2008 Data Set
• Rotationally modulated variability and pulsations of the He-rich star CPD -62 2124 with an extraordinarily strong magnetic field
• A dense mini-Neptune orbiting the bright young star HD 18599
• Life after eruption - IV. Spectroscopy of 13 old novae
• Hyades Member K2-136c: The Smallest Planet in an Open Cluster with a Precisely Measured Mass
• Close encounters involving RAVE stars beyond the 47 Tucanae tidal radius
• Deep VLA Images of the HH 124 IRS Radio Cluster and its Surroundings and a New Determination of the Distance to NGC 2264
• A Combined Chandra and LAMOST Study of Stellar Activity
• Astrometry of the main satellites of Uranus: 18 years of observations
• K2-113b: A dense hot-Jupiter transiting a solar analogue
• Results of two multi-chord stellar occultations by dwarf planet (1) Ceres
• Characterisation of a candidate dual AGN
• Hypervelocity star candidates from Gaia DR2 and DR3 proper motions and parallaxes
• A Global Astrometric Solution for Pan-STARRS referenced to ICRF2
• The large gamma-ray flare of the FSRQ PKS 0346-27
• New Parallaxes for the Upper Scorpius OB Association
• Radial velocity homogeneous analysis of M dwarfs observed with HARPS I. Exoplanet detection and candidates
• Detection of new eruptions in the Magellanic Clouds LBVs R 40 and R 110
• HAT-P-58b -- HAT-P-64b: Seven Planets Transiting Bright Stars
• A deep and wide-field view at the IC 2944 / 2948 complex in Centaurus
• Open Clusters in the Kepler Field, II. NGC 6866
• Component masses of young, wide, non-magnetic white dwarf binaries in the SDSS DR7
• Are the gyro-ages of field stars underestimated?
• Asymmetric metallicity patterns in the stellar velocity space with RAVE
• High proper motion X-ray binaries from the Yale Southern Proper Motion Survey
• A Search For X-ray Emission From Colliding Magnetospheres In Young Eccentric Stellar Binaries
• An ancient F-type subdwarf from the halo crossing the Galactic plane
• Autonomous Detection of Particles and Tracks in Optical Images
• Chemical composition of giant stars in the open cluster IC 4756
• On the Hubble Space Telescope Trigonometric Parallax of the Dwarf Nova SS Cygni
• An optical search for transients lasting a few seconds
• On the contribution of ULXs to stellar feedback: an intermediate mass black hole candidate and the population of ULXs in the low-metallicity starburst galaxy ESO 338-4
• 44 New & Known M Dwarf Multiples In The SDSS-III/APOGEE M Dwarf Ancillary Science Sample
• A spectroscopic and kinematic survey of fast hot subdwarfs
• Local Stellar Kinematics from RAVE data -- VIII. Effects of the Galactic Disc Perturbations on Stellar Orbits of Red Clump Stars
• Constraints on the Surface Magnetic Fields and Age of a Cool Hypergiant: XMM-Newton X-ray Observations of VY CMa
• XMM-Newton observation of the interacting galaxies NGC1512 and NGC1510
• Discovery of Nine Super Li-rich Unevolved Stars from the LAMOST Survey
• The Galactic Kinematics of Cataclysmic Variables
• Photometric observations and light curve solutions of the W UMa stars NSVS 2244206, NSVS 908513, CSS J004004.7+385531 and VSX J062624.4+570907
• Direct Imaging discovery of a second planet candidate around the possibly transiting planet host CVSO 30
• Young and Intermediate-age Distance Indicators
• NGC 1252: a high altitude, metal poor open cluster remnant
• Discovery of a new bona fide luminous blue variable in Norma
• The Closest M-Dwarf Quadruple System to the Sun
• Photometry of comet 29P/Schwassmann-Wachmann 1 in 2012-2019
• The Peculiar Photometric Properties of 2010 WG9: A Slowly-Rotating Trans-Neptunian Object from the Oort Cloud
• Monitoring of transiting exoplanets and their host stars with small aperture telescopes
• Eclipsing binaries in the open cluster Ruprecht 147. II: EPIC 219568666
• Sub-arcsecond high sensitivity measurements of the DG~Tau jet with e-MERLIN
• Photometric and proper motion study of neglected open cluster NGC 2215
• Radial velocities and metallicities from infrared Ca II triplet spectroscopy of open clusters II. Berkeley 23, King 1, NGC 559, NGC 6603 and NGC 7245
• Variation of the ultraviolet extinction law across the Taurus-Auriga star forming complex. A GALEX based study
• Detection of seven 2+2 doubly eclipsing quadruple systems
• The First AllWISE Proper Motion Discovery: WISEA J070720.50+170532.7
• The HATNet and HATSouth Exoplanet Surveys
• A probable pre-main sequence chemically peculiar star in the open cluster Stock 16
• Variable stars in the bulge globular cluster NGC 6401
• The SERMON project: 48 new field Blazhko stars and an investigation of modulation-period distribution
• Galactic Kinematics Derived from Data in the RAVE5, UCAC4, PPMXL, and Gaia TGAS Catalogs
• Quiescent NIR and optical counterparts to candidate black hole X-ray binaries
• Multiple Outflows in the Giant Eruption of a Massive Star
• Two's company, three's a crowd: SALT reveals the likely triple nature of the nucleus of the extreme abundance discrepancy factor planetary nebula Sp 3
• Searching for new young stars in the northern hemisphere: The Pisces Moving Group
• Photometry of some more neglected bright cataclysmic variables and candidates
• J-GEM optical and near-infrared follow-up of gravitational wave events during LIGO's and Virgo's third observing run
• Searching For Fermi GRB Optical Counterparts With The Prototype Gravitational-Wave Optical Transient Observer (GOTO)
• Magnetic field geometry and chemical abundance distribution of the He-strong star CPD -57 3509
• BAT99 126: A multiple Wolf-Rayet system in the Large Magellanic Cloud with a massive near-contact binary
• Probing Saraswati's heart: evaluating the dynamical state of the massive galaxy cluster A2631 through a comprehensive weak-lensing and dynamical analysis
• Overlooked wide companions of nearby F stars
• Characterizing K2 Candidate Planetary Systems Orbiting Low-Mass Stars III: A High Mass & Low Envelope Fraction for the Warm Neptune K2-55b
• Orbital variations and outbursts of the unusual variable star V1129 Centauri
• Time resolved spectroscopy and photometry of three little known bright cataclysmic variables: LS IV -08${}^{\mathrm{o}}$ 3, HQ Monocerotis and ST Chamaeleontis
• Orientation Parameters of the Cepheid System in the Galaxy
• The first observed stellar occultations by the irregular satellite (Saturn IX) Phoebe and improved rotational period
• A bag of tricks: Using proper motions of Galactic stars to identify the Hercules ultra-faint dwarf galaxy members
• Updated orbital monitoring and dynamical masses for nearby M-dwarf binaries
• A method for determining the radius of an open cluster from stellar proper motions
• A catalogue of open cluster radii determined from Gaia proper motions
• Young Stellar Object candidates toward the Orion region selected from GALEX
• A Study of the Magnetic Activity and Variability of GJ 436
• New orbits of irregular satellites designed for the predictions of stellar occultations up to 2020, based on thousands of new observations
• The GALAH Survey: Relative throughputs of the 2dF fibre positioner and the HERMES spectrograph from stellar targets
• Multiplexing Precision RVs: Searching for Close in Gas Giants in Open Clusters
• Swift J0513.4-6547 = LXP 27.2 : a new Be/X-ray binary system in the Large Magellanic Cloud
• Seimei KOOLS-IFU Mapping of the Gas and Dust Distributions in Galactic Planetary Nebulae: the Case of IC2165
• Star-forming regions at the periphery of the supershell surrounding the Cyg OB1 association. I. The star cluster vdB 130 and its ambient gas and dust medium
• The Global sphere reconstruction (GSR) - Demonstrating an independent implementation of the astrometric core solution for Gaia
• UrHip Proper Motion Catalog
• The Solar Neighborhood. XLIII: Discovery of New Nearby Stars with pm < 0.18 arcsec yr-1 (TINYMO sample)
• Member candidates of the star clusters from LAMOST DR2 data
• Speckle Interferometry at the U.S. Naval Observatory. XXIII
• Discovery of an Extremely r-process-enhanced Thin-disk Star with [Eu/H] = +0.78
• Life after eruption - VI. Recovery of the old novae EL Aql, V606 Aql, V908 Oph, V1149 Sgr, V1583 Sgr and V3964 Sgr
• Variable Stars in Young Open Cluster NGC 2244
• Vertical Distribution and Kinematics of Planetary Nebulae in the Milky Way
• Insights into the properties of the Local (Orion) spiral arm. NGC 2302: First results and description of the program
• Chandra Observations of the field containing HESS J1616-508
• Emission-line stars in the LMC: the Armagh survey, and a metacatalogue
• Globules and pillars in Cygnus X. II. Massive star formation in the globule IRAS~20319+3958
• XMM-Newton view of X-ray overdensities from nearby galaxy clusters: the environmental dependencies
• Quasi-automatic software support for Gaia ground based optical tracking
• Searching for star-forming dwarf galaxies in the Antlia cluster
• Investigation of a transiting planet candidate in Trumpler 37: an astrophysical false positive eclipsing spectroscopic binary star
• FRB Line-of-sight Ionization Measurement From Lightcone AAOmega Mapping Survey: the First Data Release
• Dipper-like variability of the Gaia alerted young star V555 Ori
• Long-Period High-Amplitude Red Variables in the KELT Survey
• The Mysterious Sickle Object in the Carina Nebula: A stellar wind induced bow shock grazing a clump?
• TOI-4336 A b: A temperate sub-Neptune ripe for atmospheric characterization in a nearby triple M-dwarf system
• TFAW survey. I. Wavelet-based denoising of K2 light curves. Discovery and validation of two new Earth-sized planets in K2 campaign 1
• The early-type near-contact binary system V337 Aql revisited
• Hunt for extremely eccentric eclipsing binaries
• Gemini optical observations of binary millisecond-pulsars
• Measurements of the Ca II infrared triplet emission lines of pre-main-sequence stars
• An Investigation of the Absolute Proper Motions of the SCUSS Catalog
• The GALAH Survey: Velocity fluctuations in the Milky Way using red clump giants
• NGC 2548: clumpy spatial and kinematic structure in an intermediate-age galactic cluster
• The Lives of Stars: Insights From the TGAS-RAVE-LAMOST Dataset
• Gaia Focused Product Release: A catalogue of sources around quasars to search for strongly lensed quasars
• New Open Cluster Candidates Discovered in the XSTPS-GAC Survey
• Potential Interior Structures and Habitability of Super-Earth Exoplanets LHS 1140 b, K2-18 b, TOI-1452 b and TOI-1468 c
• Astrometry with PRAIA
• New orbit recalculations of comet C/1890 F1 Brooks and its dynamical evolution
• The first study of four doubly eclipsing systems
• LAMOST/HRS Spectroscopic Analysis of Two New Li-rich Giants
• Light-time effect detected in fourteen eclipsing binaries
• An M dwarf Companion to an F-type Star in a young main-sequence binary
• Photometry of the long period dwarf nova MU Centauri
• First frequency analysis for three new members of the group of eclipsing binaries with a pulsating component
• HST/COS Spectra of the Wind Lines of VFTS 102 and 285
• Spinning and color properties of the active asteroid (6478) Gault
• Ultraviolet extinction properties of the 30 Dor Nebula and interpreting observations of starburst clusters
• Photometry of some neglected bright cataclysmic variables and candidates
• The Emission Nebula Sh 2-174: A Radio Investigation of the Surrounding Region
• Study of grain alignment efficiency and a distance estimate for small globule CB4
• Life after eruption - V. Spectroscopy of eight candidate old novae with Gemini-South
• Astrometric observations of Phobos and Deimos during the 1971 opposition of Mars
• Determination of a temporally and spatially resolved Supernova rate from OB-stars within 5kpc
• Spectro-photometric characterization of high proper motion sources from WISE
• Visual Orbits of Spectroscopic Binaries with the CHARA Array. IV. HD 61859, HD 89822, HD 109510, and HD 191692
• Relationship between Radar Cross Section and Optical Magnitude based on Radar and Optical Simultaneous Observations of Faint Meteors
• ASTROPOP: the ASTROnomical POlarimetry and Photometry pipeline
• Three-Dimensional Kinematics of Classical Cepheids
• The Rotation Period Distribution in the Young Open Cluster NGC 6709
• A Technique to Derive Improved Proper Motions for Kepler Objects of Interest
• Two neighbours of the ultra-short-period Earth-sized planet K2-157 b in the warm Neptunian savanna
• Herbig-Haro objects and mid-infrared outflows in the Vela C molecular cloud
• Photometric Investigation of the Total-Eclipsing Contact Binary V12 in the Intermediate-age Open Cluster NGC 7789
• Discovery of a pair of very metal-poor stars enriched in neutron-capture elements: The proto-disk r-II star BPS CS 29529-0089 and the Gaia-Sausage-Enceladus r-I star TYC 9219-2422-1
• A transiting super-Earth close to the inner edge of the habitable zone of an M0 dwarf star
• The oldest stars with low neutron-capture element abundances and origins in ancient dwarf galaxies
• Multiwavelength Observations of the Black Hole X-ray Binary MAXI J1820$+$070 in the Rebrightening Phase
• Eight new 2+2 doubly eclipsing quadruple systems detected
• Proper motions of five OB stars with candidate dusty bow shocks in the Carina Nebula
• A Chandra X-ray census of the interacting binaries in old open clusters - Collinder 261
• DT Serpentis: neither a symbiotic star nor a planetary nebula associate
• Miscellaneous photometric variations in cataclysmic variables: V455 And, SS Cyg, AQ Men, LQ Peg, RW Tri and UX UMa
• The Habitability of GJ 357 d : Possible Climates and Observability
• The rotation-activity relation of M dwarfs: From K2 to TESS and PLATO
• Processing GOTO data with the Rubin Observatory LSST Science Pipelines I : Production of coadded frames
• Speckle Interferometry at the U.S. Naval Observatory. XXII
• A young spectroscopic binary in a quintuple system part of the Local Association
• How long can LBVs sleep? A long-term photometric vaiability and spectral study of the Galactic candidate luminous blue variable MN112
• VLT observations of the magnetar CXO J164710.2-455216 and the detection of a candidate infrared counterpart
• The multiplicity of ϕ Phe revisited
• Spectroscopic survey of faint planetary-nebula nuclei. II. The subdwarf O central star of Fr 2-30
• New insight into the massive eccentric binary HD 165052: self-consistent orbital solution, apsidal motion, and fundamental parameters
• Data Release of the AST3-2 Automatic Survey from Dome A, Antarctica
• A reanalysis of the LHS 1140 b atmosphere observed with the Hubble Space Telescope
• A search of reactivated comets
• Microlens Surveys are a Powerful Probe of Asteroids
• Vertical Distribution and Kinematics of Protoplanetary Nebulae in the Galaxy
• Lately Exposed Amorphous Water Ice on Comet 49P/Arend-Rigaux
• HD 7977 and its possible influence on Solar System bodies
• On the physical reality of overlooked open clusters
• An astrometric and spectroscopic study of the $\delta$ Scuti variable HD21190 and its wide companion CPD -83${}^{\circ }$ 64B
• A Wide-Field Survey for Transiting Hot Jupiters and Eclipsing Pre-Main-Sequence Binaries in Young Stellar Associations
• Photometry of the long period dwarf nova GY Hya
• ASAS-SN Discovery of 4880 Bright RR Lyrae Variable Stars
• Δμ Binaries among Stars with Large Proper Motions
• The nature of the Cygnus extreme B-supergiant 2MASS J20395358+4222505
• Fixing the Reference Frame for PPMXL Proper Motions Using Extragalactic Sources
• Photometry of the three eclipsing novalike variables EC 21178-5417, GS Pav and V345 Pav
• A transiting multi-planet system in the 61 million year old association Theia 116
• TESS Discovery of Twin Planets near 2:1 Resonance around Early M-Dwarf TOI 4342
• Direct Imaging Explorations for Companions around Mid-Late M Stars from the Subaru/IRD Strategic Program
• DECam Survey for Low-Mass Stars and Substellar Objects in the UCL and LCC Subgroups of the Sco-Cen OB Association (SCOCENSUS)
• A Chandra X-ray census of the interacting binaries in old open clusters - NGC188
• HST/FGS Trigonometric Parallaxes of M-dwarf Eclipsing Binaries
• NLTE spectral analysis of the intermediate helium-rich subdwarf B star CPD-20°1123
• X-ray Activity from Different Types of Stars
• ACRONYM IV: Three New, Young, Low-mass Spectroscopic Binaries
• MANGOS II: Five new giant planets orbiting low-mass stars
• A search for peculiar stars in the open cluster Hogg 16
• Absolute dimensions of the early F-type eclipsing binary V506 Ophiuchi
• Optical linear polarization study towards Czernik 3 open cluster at different spatial scales
• Complex stellar system ESO65SC03: Open cluster or remnant?
• MegaPipe astrometry for the New Horizons spacecraft
• Fundamental stellar parameters for selected T-Tauri stars in the Chamaeleon and Rho Ophiuchus star-forming regions
• A Tale of Three Dust Populations: Variable $R_{\mathrm{V}}$ and Extreme Polarization Along Sightlines Toward $\zeta$ Ophiuchi
• Hamburger Sternwarte plate archives: Historic long-term variability study of active galaxies based on digitized photographic plates
• Spectroscopic and photometric analysis of 21 chromospherically active variables: activity cycles and differential rotation
• Improved proper motion determinations for 15 open clusters based on the UCAC4 catalog
• Measurements of Chromospheric Mg I Emission Lines of Zero-Age Main-Sequence Stars
• On the age of the magnetically active WW Psa and TX Psa members of the beta Pictoris association
• Towards Understanding the Nature of Young Detached Binary System HD 350731
• DART-Vetter: A Deep LeARning Tool for automatic triage of exoplanet candidates
• A new estimate of the Local Standard of Rest from data on young Galactic objects
• Maximizing Survey Volume for Large-Area Multi-Epoch Surveys with Voronoi Tessellation
• TOI-7166 b: A Habitable Zone mini-Neptune planet around a nearby low-mass star
• Dark Energy Survey Year 1 Results: Photometric Data Set for Cosmology
• Connecting the dots: Tracing the evolutionary pathway of Polar Ring Galaxies in the cases of NGC 3718, NGC 2685, and NGC 4262
• Variable stars detection in the field of open cluster NGC 188
• The observed multiplicity properties of B-type stars in the Galactic young open cluster NGC 6231
• MG1-688432: A Peculiar Variable System
• LAMOST 1: A Disrupted Satellite in the Constellation Draco
• Chromospheric Mg I Emission Lines of Pre-Main-Sequence Stars
• Preliminary results of CCD observations of Himalia at Yunnan Observatories in 2015
• Circumstellar Medium Constraints on the Environment of Two Nearby Type Ia Supernovae: SN 2017cbv and SN 2020nlb
• A Sequoia stellar candidate with very high 7Li and 9Be
• Simultaneous photometric and CARMENES spectroscopic monitoring of fast-rotating M dwarf GJ 3270. Discovery of a post-flare corotating feature
• A compositional link between rocky exoplanets and their host stars
• High resolution observations of Cen A: Yellow and red supergiants in a region of jet-induced star formation?
• Analysis of the multiple system with CP component phi Draconis
• The Implementation of Binned Kernel Density Estimation to Determine Open Clusters' Proper Motions: Validation of the Method
• Search for possibly evolutionary linked globular and open clusters
• SN 2021hpr: A Normal Type Ia Supernova Showing Excess Emission in the Early Rising Phase
• The Stripped-Star Ultraviolet Magellanic Cloud Survey (SUMS): The UV Photometric Catalog and Stripped Star Candidate Selection
• Surface activity of a Rossby sequence of cool Hyades stars
• Evidence for stellar contamination and water absorption in NGTS-5b's transmission spectra with GTC/OSIRIS
• Gas-depleted planet formation occurred in the four-planet system around the red dwarf LHS 1903
• Examining the detectability of ringing on highly eccentric exoplanets
• An improved solution to geometric distortion using an orthogonal method
• ASTEP confirmation of a pair of long-period Jupiter-sized planets with extremely low densities transiting TOI-791
• Detecting Exoplanets Using Eclipsing Binaries as Natural Starshades
• NGTS-EB-8: A double-lined eclipsing M+M binary discovered by citizen scientists
• Computing Natural Magnitudes in the Photometric Systems of Astronomical Plates using Gaia DR3 SEDs
• Study of the open cluster Alessi-Teutsch 9 (ASCC 10) using multiband photometry and Gaia EDR3
• Neutron-capture elements record the ordered chemical evolution of the disc over time
• Purveyors of fine halos III. Chemical abundance analysis of a potential omega Cen associate
• Improved characterization of the TOI-2141 system: a dense sub-Neptune with non-transiting inner and outer companions
• Six new doubly eclipsing quadruples in a 2+2 architecture
• HAT-P-68b: A Transiting Hot Jupiter Around a K5 Dwarf Star
• A new method to correct for host star variability in multi-epoch observations of exoplanet transmission spectra
• Consensus based Algorithm for Nonparametric Detection of Star Clusters (CANDiSC)
• Absolute physical parameters of three poorly studied detached eclipsing binaries
• Identification of Stellar Sequences in various Stellar Systems : ESO65-SC03, TEUTSCH 106, TURNER 6
• Star formation in two irradiated globules around Cygnus OB2