The Gaia mission

Abstract

Gaia is a cornerstone mission in the science programme of the European Space Agency (ESA). The spacecraft construction was approved in 2006, following a study in which the original interferometric concept was changed to a direct-imaging approach. Both the spacecraft and the payload were built by European industry. The involvement of the scientific community focusses on data processing for which the international Gaia Data Processing and Analysis Consortium (DPAC) was selected in 2007. Gaia was launched on 19 December 2013 and arrived at its operating point, the second Lagrange point of the Sun-Earth-Moon system, a few weeks later. The commissioning of the spacecraft and payload was completed on 19 July 2014. The nominal five-year mission started with four weeks of special, ecliptic-pole scanning and subsequently transferred into full-sky scanning mode. We recall the scientific goals of Gaia and give a description of the as-built spacecraft that is currently (mid-2016) being operated to achieve these goals. We pay special attention to the payload module, the performance of which is closely related to the scientific performance of the mission. We provide a summary of the commissioning activities and findings, followed by a description of the routine operational mode. We summarise scientific performance estimates on the basis of in-orbit operations. Several intermediate Gaia data releases are planned and the data can be retrieved from the Gaia Archive, which is available through the Gaia home page at http://www.cosmos.esa.int/gaia.

The Gaia Collaboration consists of 625 authors. Accepted by A&A in the Gaia Special Feature

References in corpus (16)

• Gaia Data Release 1. Summary of the astrometric, photometric, and survey properties
• Gaia Data Release 1: Astrometry - one billion positions, two million proper motions and parallaxes
• The Gaia FGK Benchmark Stars - High resolution spectral library
• Gaia Data Release 1, Pre-processing and source list creation
• Gaia Data Release 1 - The Cepheid & RR Lyrae star pipeline and its application to the south ecliptic pole region
• Diffuse interstellar bands in RAVE Survey spectra
• Gaia data release 1: Principles of the photometric calibration of the G band
• Detecting stars, galaxies, and asteroids with Gaia
• Radial velocities for the Hipparcos-Gaia Hundred-Thousand-Proper-Motion project
• Overview and stellar statistics of the expected Gaia Catalogue using the Gaia Object Generator
• A general relativistic model for the light propagation in the gravitational field of the Solar System: the dynamical case
• On-orbit performance of the Gaia CCDs at L2
• A multi-method approach to radial-velocity measurement for single-object spectra
• A fast 2D image reconstruction algorithm from 1D data for the Gaia mission
• Gaia on-board metrology: basic angle and best focus
• Enabling Gaia observations of naked-eye stars

Cited by in corpus (412)

• Gaia Data Release 1. Summary of the astrometric, photometric, and survey properties
• The mass distribution and gravitational potential of the Milky Way
• Gaia Data Release 1: Astrometry - one billion positions, two million proper motions and parallaxes
• The Optical to Mid-Infrared Extinction Law Based on the APOGEE, Gaia DR2, Pan-STARRS1, SDSS, APASS, 2MASS and WISE Surveys
• Gaia Data Release 1: Catalogue validation
• The unWISE Catalog: Two Billion Infrared Sources from Five Years of WISE Imaging
• Target Selection for the SDSS-IV APOGEE-2 Survey
• Proxima's orbit around Alpha Centauri
• Asteroseismology and Gaia: Testing Scaling Relations Using 2200 Kepler Stars with TGAS Parallaxes
• A Large Catalog of Accurate Distances to Local Molecular Clouds: The Gaia DR2 Edition
• The Kepler Follow-Up Observation Program. I. A Catalog of Companions to Kepler Stars from High-Resolution Imaging
• The GALAH Survey: Observational Overview and Gaia DR1 companion
• The anatomy of the Orion B Giant Molecular Cloud: A local template for studies of nearby galaxies
• Hubble PanCET: An extended upper atmosphere of neutral hydrogen around the warm Neptune GJ 3470 b
• The Solar Neighborhood XLV. The Stellar Multiplicity Rate of M Dwarfs Within 25 pc
• The age-metallicity structure of the Milky Way disk
• A planetesimal orbiting within the debris disc around a white dwarf star
• Highly structured disk around the planet host PDS 70 revealed by high-angular resolution observations with ALMA
• Distances and parallax bias in Gaia DR2
• VIRAC: The VVV Infrared Astrometric Catalogue
• UCAC5: New Proper Motions using Gaia DR1
• Estimating distances from parallaxes. III. Distances of two million stars in the Gaia DR1 catalogue
• Abundance to age ratios in the HARPS-GTO sample with Gaia DR2: Chemical clocks for a range of [Fe/H]
• The TESS-HERMES survey Data Release 1: high-resolution spectroscopy of the TESS southern continuous viewing zone
• Homogeneous photometry VII. Globular clusters in the Gaia era
• Hunting for open clusters in \textit{Gaia} DR2: the Galactic anticentre
• The VMC Survey. XXV. The 3D structure of the Small Magellanic Cloud from Classical Cepheids
• Fundamental parameters and infrared excesses of Tycho-Gaia stars
• The Galactic WN stars revisited. Impact of Gaia distances on fundamental stellar parameters
• Halo Substructure in the SDSS-Gaia Catalogue : Streams and Clumps
• The local high velocity tail and the Galactic escape speed
• Optical spectroscopy and demographics of redback millisecond pulsar binaries
• The AMBRE Project: chemical evolution models for the Milky Way thick and thin discs
• Gaia Data Release 1, Pre-processing and source list creation
• Gaia DR2 reveals a star formation burst in the disc 2-3 Gyr ago
• Barium & related stars and their white-dwarf companions I. Giant stars
• Mg line formation in late-type stellar atmospheres: I. The model atom
• Extended stellar systems in the solar neighborhood - I. The tidal tails of the Hyades
• Origin of the excess of high-energy retrograde stars in the Galactic halo
• PLATO as it is: a legacy mission for Galactic archaeology
• A Morphological Classification Model to Identify Unresolved PanSTARRS1 Sources: Application in the ZTF Real-Time Pipeline
• Likely Transiting Exocomets Detected by Kepler
• A survey of C2H, HCN, and C18O in protoplanetary disks
• Extended stellar systems in the solar neighborhood - II. Discovery of a nearby 120° stellar stream in Gaia DR2
• A census of symbiotic stars in the 2MASS, WISE and Gaia surveys
• Reconciling solar and stellar magnetic cycles with nonlinear dynamo simulations
• The AMBRE project: The thick thin disk and thin thick disk of the Milky Way
• Hot Stuff for One Year (HSOY) - A 583 million star proper motion catalogue derived from Gaia DR1 and PPMXL
• The CARMENES search for exoplanets around M dwarfs -- Photospheric parameters of target stars from high-resolution spectroscopy. II. Simultaneous multiwavelength range modeling of activity insensitive lines
• Exoplanet atmospheres with GIANO II. Detection of molecular absorption in the dayside spectrum of HD 102195b
• Revealing black holes with Gaia
• ALMA survey of Class II protoplanetary disks in Corona Australis: a young region with low disk masses
• Gaia Data Release 1: The reference frame and the optical properties of ICRF sources
• The core-cusp problem: a matter of perspective
• Identification of Young Stellar Object candidates in the $Gaia$ DR2 x AllWISE catalogue with machine learning methods
• Discovery of a Third Transiting Planet in the Kepler-47 Circumbinary System
• A New Generation of Cool White Dwarf Atmosphere Models. IV. Revisiting the Spectral Evolution of Cool White Dwarfs
• A Survey for New Members of Taurus from Stellar to Planetary Masses
• Globular cluster number density profiles using Gaia DR2
• Fourteen candidate RR Lyrae star streams in the inner Galaxy
• Open clusters in APOGEE and GALAH: Combining Gaia and ground-based spectroscopic surveys
• The first all-sky view of the Milky Way stellar halo with Gaia+2MASS RR Lyrae
• Dust-trapping vortices and a potentially planet-triggered spiral wake in the pre-transitional disk of V1247 Orionis
• Gaia Data Release 1 - The Cepheid & RR Lyrae star pipeline and its application to the south ecliptic pole region
• The VMC survey - XXVI. Structure of the Small Magellanic Cloud from RR Lyrae stars
• High gas/dust size ratio indicating efficient radial drift in the mm-faint CX Tau disk
• The lowest detected stellar Fe abundance: The halo star SMSS J160540.18-144323.1
• Synthetic Stellar Photometry - II. Testing the bolometric flux scale, and tables of bolometric corrections for the Hipparcos/Tycho, Pan-STARRS1, SkyMapper and JWST systems
• BANYAN. IX. The Initial Mass Function and Planetary-Mass Object Space Density of the TW Hya Association
• The radii and limb darkenings of Alpha Centauri A and B - Interferometric measurements with VLTI/PIONIER
• WASP-4b Arrived Early for the TESS Mission
• An extensive VLT/X-Shooter library of photospheric templates of pre-main sequence stars
• A high binary fraction for the most massive close-in giant planets and brown dwarf desert members
• High-precision abundances of elements in Kepler LEGACY stars. Verification of trends with stellar age
• Hunting Black Holes with Gaia
• Multiplicity of Galactic Cepheids and RR Lyrae stars from Gaia DR2 - I. Binarity from proper motion anomaly
• Standard Galactic Field RR Lyrae. I. Optical to Mid-infrared Phased Photometry
• Exploring the age dependent properties of M and L dwarfs using Gaia and SDSS
• Transiting exocomets detected in broadband light by TESS in the $\beta$ Pictoris system
• No Evidence for Lunar Transit in New Analysis of Hubble Space Telescope Observations of the Kepler-1625 System
• Period spacings of $\gamma$ Doradus pulsators in the \textit{Kepler} field: Rossby and gravity modes in 82 stars
• Structure Formation and Exotic Compact Objects in a Dissipative Dark Sector
• Scientific Synergy Between LSST and Euclid
• Contact binaries at the short period cut-off I. statistics and the first photometric investigations of ten totally eclipsing systems
• Not all stars form in clusters - measuring the kinematics of OB associations with $Gaia$
• Olivine-dominated A-type asteroids in the Main Belt: Distribution, Abundance and Relation to Families
• In-depth study of moderately young but extremely red, very dusty substellar companion HD206893B
• The extended halo of NGC 2682 (M 67) from Gaia DR2
• Identifying Exoplanets with Deep Learning II: Two New Super-Earths Uncovered by a Neural Network in K2 Data
• Gaia data release 1: Principles of the photometric calibration of the G band
• 3D motions in the Sculptor dwarf galaxy as a glimpse of a new era
• The Geometry of Sagittarius Stream from Pan-STARRS1 3$\pi$ RR Lyrae
• The Gaia-ESO Survey: calibration strategy
• MOBSTER - II. Identification of rotationally variable A stars observed with \emph{TESS} in Sectors 1 to 4
• An alternative interpretation of the exomoon candidate signal in the combined Kepler and Hubble data of Kepler-1625
• Kinematics of OB-associations in Gaia epoch
• CO emission tracing a warp or radial flow within $\lesssim$ 100 au in the HD 100546 protoplanetary disk
• Probing the existence of very massive first stars
• The Solar Neighborhood. XXXIX. Parallax Results from the CTIOPI and NOFS Programs: 50 New Members of the 25 Parsec White Dwarf Sample
• Gaia data release 1, the photometric data
• A 3D view of the Hyades stellar and sub-stellar population
• The Mass of Stirring Bodies in the AU Mic Debris Disk Inferred from Resolved Vertical Structure
• Size and shape of Chariklo from multi-epoch stellar occultations
• A census of massive stars in NGC 346. Stellar parameters and rotational velocities
• Rotational modulation in TESS B stars
• The Young L Dwarf 2MASS J11193254-1137466 is a Planetary-Mass Binary
• The Distances to Molecular Clouds at High Galactic Latitudes based on GAIA DR2
• Toward a Complete Understanding of the Magellanic Stream Formation
• ACRONYM III: Radial Velocities for 336 Candidate Young Low-Mass Stars in the Solar Neighborhood, Including 78 Newly Confirmed Young Moving Group Members
• Multi-epoch Ultraviolet HST Observations of Accreting Low-mass Stars
• Lessons from the curious case of the `fastest' star in Gaia DR2
• Ages and Masses of 0.64 million Red Giant Branch stars from the LAMOST Galactic Spectroscopic Survey
• Testing asteroseismology with Gaia DR2: Hierarchical models of the Red Clump
• A Deep View of a Fossil Relic in the Galactic Bulge: The Globular Cluster HP1
• On the mass accretion rate and infrared excess in Herbig Ae/Be Stars
• The Gaia-ESO Survey and CSI 2264: Substructures, disks, and sequential star formation in the young open cluster NGC 2264
• An initial overview of the extent and structure of recent star formation within the Serpens Molecular Cloud using Gaia Data Release 2
• HARPS-N radial velocities confirm the low densities of the Kepler-9 planets
• Accurate effective temperatures of the metal-poor benchmark stars HD 140283, HD 122563 and HD 103095 from CHARA interferometry
• When the tale comes true: multiple populations and wide binaries in the Orion Nebula Cluster
• Oort spike comets with large perihelion distances
• A test of Gaia Data Release 1 parallaxes: implications for the local distance scale
• The Gaia-ESO Survey: Asymmetric expansion of the Lagoon Nebula cluster NGC 6530 from GES and Gaia DR2
• Spectral and orbital characterisation of the directly imaged giant planet HIP 65426 b
• The substructure and halo population of the Double Cluster $h$ and $\chi$ Persei
• Hubble Space Telescope non-detection of PSR J2144-3933: the coldest known neutron star
• A Survey For Planetary-mass Brown Dwarfs in the Taurus and Perseus Star-forming Regions
• The VISCACHA survey - I. Overview and First Results
• Exploring the formation by core accretion and the luminosity evolution of directly imaged planets: The case of HIP 65426 b
• Transverse kinematics of the Galactic bar-bulge from VVV and Gaia
• Masses and radii for the three super-Earths orbiting GJ 9827, and implications for the composition of small exoplanets
• ALMA Detection of Extended Millimeter Halos in the HD 32297 and HD 61005 Debris Disks
• The bimodal [Mg/Fe] versus [Fe/H] bulge sequence as revealed by APOGEE DR14
• Gaia Data Release 1. Cross-match with external catalogues - Algorithm and results
• A census of $\rho$ Oph candidate members from Gaia DR2
• The Hubble Space Telescope UV Legacy Survey of Galactic Globular Clusters. XVIII. Proper-motion kinematics of multiple stellar populations in the core regions of NGC 6352
• Stellar rotation and the extended main sequence turnoff in the open cluster NGC 5822
• Empirical Bolometric Fluxes and Angular Diameters of 1.6 Million Tycho-2 Stars and Radii of 350,000 Stars with \emph{Gaia} DR1 Parallaxes
• Rotating Stars from Kepler Observed with Gaia DR1
• Staying away from the bar: the local dynamical signature of slow and fast bars in the Milky Way
• Solar System Science with ESA Euclid
• Globular clusters with Gaia
• Extended main-sequence turnoffs in the double cluster $h$ and $\chi$ Persei: The complex role of stellar rotation
• Extreme Scattering Events Towards Two Young Pulsars
• Extreme Debris Disk Variability -- Exploring the Diverse Outcomes of Large Asteroid Impacts During the Era of Terrestrial Planet Formation
• Precise surface gravities of $\delta$ Scuti stars from asteroseismology
• Analysis of the physical nature of 22 New VVV Survey Globular Cluster candidates in the Milky Way Bulge
• Three new Galactic star clusters discovered in the field of the open cluster NGC 5999 with Gaia DR2
• The period-luminosity relation of red supergiants with Gaia DR2
• A Search for Red Giant Solar-like Oscillations in All Kepler Data
• A 80 au cavity in the disk around HD 34282
• Triage of Astrometric Binaries - how to find triple systems and dormant black-hole secondaries in the Gaia orbits
• Swift UVOT near-UV transit observations of WASP-121 b
• The period-luminosity and period-radius relations of Type II and anomalous Cepheids
• The fall of the Northern Unicorn: Tangential motions in the Galactic Anti-centre with SDSS and Gaia
• An estimate of the $k_2$ Love number of WASP-18Ab from its radial velocity measurements
• Extended stellar systems in the solar neighborhood - III. Like ships in the night: the Coma Berenices neighbor moving group
• Large Interstellar Polarisation Survey. LIPS I: FORS2 spectropolarimetry in the Southern Hemisphere
• The completeness-corrected rate of stellar encounters with the Sun from the first Gaia data release
• Revisiting the Long-Period Transiting Planets from Kepler
• ALMA study of the HD 100453 AB system and the tidal interaction of the companion with the disk
• Detection of Planetary and Stellar Companions to Neighboring Stars via a Combination of Radial Velocity and Direct Imaging Techniques
• Metallicity determination of M dwarfs - Expanded parameter range in metallicity and effective temperature
• ALMA 1.3 Millimeter Map of the HD 95086 System
• High-resolution spectroscopy of extremely metal-poor stars from SDSS/SEGUE. III. Unevolved Stars with $[Fe/H]\lesssim -3.5$
• LAMOST Views $\delta$ Scuti Pulsating Stars
• A method to estimate stellar ages from kinematical data
• Spontaneous generation of bending waves in isolated Milky Way-like discs
• Wide Binaries in Tycho-Gaia II: Metallicities, Abundances, and Prospects for Chemical Tagging
• Abundances of disk and Bulge giants from high-resolution optical spectra III. Sc, V, Cr, Mn, Co, Ni
• A SITELLE view of M31's central region - I: Calibrations and radial velocity catalogue of nearly 800 emission-line point-like sources
• Star-disc (mis-)alignment in Rho Oph and Upper Sco: insights from spatially resolved disc systems with K2 rotation periods
• The Discovery of a Five-Image Lensed Quasar at z = 3.34 using PanSTARRS1 and Gaia
• The VMC survey - XXIII. Model fitting of light and radial velocity curves of Small Magellanic Cloud classical Cepheids
• The Hercules stream as seen by APOGEE-2 South
• Centroid vetting of transiting planet candidates from the Next Generation Transit Survey
• Milky Way Tomography with K and M Dwarf Stars: the Vertical Structure of the Galactic Disk
• The Physics of the Accelerating Universe Camera
• Organic molecules in the protoplanetary disk of DG Tau revealed by ALMA
• Asteroseismic versus Gaia distances: a first comparison
• CCD Parallaxes for 309 Late-type Dwarfs and Subdwarfs
• The Effect of Binarity on Circumstellar Disk Evolution
• The Gaia-ESO Survey: age spread in the star forming region NGC6530 from the HR diagram and gravity indicators
• More Rapidly Rotating PMS M Dwarfs with Light Curves Suggestive of Orbiting Clouds of Material
• TOI-216b and TOI-216c: Two warm, large exoplanets in or slightly wide of the 2:1 orbital resonance
• Prospects for Backtracing 1I/`Oumuamua and Future Interstellar Objects
• Verifying reddening and extinction for Gaia DR1 TGAS main sequence stars
• Precise masses for the transiting planetary system HD 106315 with HARPS
• Ca line formation in late-type stellar atmospheres: I. The model atom
• A high resolution mid-infrared survey of water emission from protoplanetary disks
• Orbits for eighteen visual binaries and two double-line spectroscopic binaries observed with HRCAM on the CTIO SOAR 4m telescope, using a new Bayesian orbit code based on Markov Chain Monte Carlo
• Asteroseismic masses of retired planet-hosting A-stars using SONG
• Blind chemical tagging with DBSCAN: prospects for spectroscopic surveys
• Through thick or thin: Multiple components of the magneto-ionic medium towards the nearby $\mathrm{H}\mathrm{II}$ region Sharpless 2-27 revealed by Faraday tomography
• The Mass-Activity relationships in M and K dwarfs. I. Stellar parameters of our sample of M and K dwarfs
• HIDES spectroscopy of bright detached eclipsing binaries from the $Kepler$ field - III. Spectral analysis, updated parameters, and new systems
• The Helium Abundance of NGC 6791 from Modeling of Stellar Oscillations
• The orbital anisotropy profiles of nearby globular clusters from Gaia Data Release 2
• A catalog of known Galactic K-M stars of class I, candidate RSGs, in Gaia DR2
• The 2014-2017 outburst of the young star ASASSN-13db: A time-resolved picture of a very low-mass star between EXors and FUors
• New Near-Infrared $JH{K}_s$ light-curve templates for RR Lyrae variables
• Distribution functions for resonantly trapped orbits in the Galactic disc
• Co-orbital exoplanets from close period candidates: The TOI-178 case
• Asteroseismology of massive stars with the TESS mission: the runaway Beta Cep pulsator PHL 346 = HN Aqr
• An artificial neural network to discover Hypervelocity stars: Candidates in Gaia DR1/TGAS
• Indications of non-conservative mass-transfer in AMXPs
• Multi-band photometry and spectroscopy of an all-sky sample of bright white dwarfs
• The First Scattered Light Image of the Debris Disk around the Sco-Cen target HD 129590
• The Swift/UVOT Stars Survey. III. Photometry and Color-Magnitude Diagrams of 103 Galactic Open Clusters
• Detection of a White Dwarf companion to a Blue Straggler Star in the outskirts of globular cluster NGC 5466 with the Ultraviolet Imaging Telescope (UVIT)
• On-orbit performance of the Gaia CCDs at L2
• The ESA Gaia Archive: Data Release 1
• The structural evolution of galaxies with both thin and thick discs
• A survey for planetary-mass brown dwarfs in the Chamaeleon I star-forming region
• The distances to star-clusters hosting Red Supergiants: $\chi$ Per, NGC 7419, and Westerlund 1
• Mapping young stellar populations towards Orion with Gaia DR1
• NOEMA maps the CO $J=2-1$ environment of the red supergiant $\mu$ Cep
• Wide binary companions to massive stars and their use in constraining natal kicks
• Cooling in the shade of warped transition disks
• Spectroscopic membership for the populous 300 Myr-old open cluster NGC 3532
• Using Gaia DR2 to detect extratidal structures around the Galactic globular cluster NGC362
• Migration and kinematics in growing disc galaxies with thin and thick discs
• Ultra Short Period Planets in K2 with companions: a double transiting system for EPIC 220674823
• Individual, Model-Independent Masses of the Closest Known Brown Dwarf Binary to the Sun
• A New Generation of Cool White Dwarf Atmosphere Models. III. WD J2356$-$209: Accretion of a Planetesimal with an Unusual Composition
• Seismic modelling of early B-type pulsators observed by BRITE: I. $\theta$ Ophiuchi
• Exploring the dimming event of RW Aur A through multi-epoch VLT/X-Shooter spectroscopy
• The nitrogen carrier in protoplanetary disks
• Evidence for mass accretion driven by spiral shocks onto the white dwarf in SDSS J123813.73-033933.0
• The Rotation-Metallicity Relation for the Galactic Disk as Measured in the Gaia DR1 TGAS and APOGEE Data
• The imprint of X-ray photoevaporation of planet-forming discs on the orbital distribution of giant planets
• Modelling interstellar structures around Vela X-1
• At a Crossroads: Stellar Streams in the South Galactic Cap
• Structured star formation in the Magellanic inter-Cloud region
• Spitzer transit follow-up of planet candidates from the K2 mission
• In-flight photometry extraction of PLATO targets: Optimal apertures for detecting extrasolar planets
• Transit least-squares survey -- II. Discovery and validation of 17 new sub- to super-Earth-sized planets in multi-planet systems from K2
• The effect of tides on the Sculptor dwarf spheroidal galaxy
• Two kinematically distinct old globular cluster populations in the Large Magellanic Cloud
• Quasar Lenses and Galactic Streams: Outlier Selection and GAIA Multiplet Detection
• HADES RV program with HARPS-N at TNG. IX. A super-Earth around the M dwarf Gl686
• Identification of RR Lyrae stars in multiband, sparsely-sampled data from the Dark Energy Survey using template fitting and Random Forest classification
• The SOPHIE search for northern extrasolar planets XV. A Warm Neptune around the M-dwarf Gl378
• A deep XMM-Newton look on the thermally emitting isolated neutron star RX J1605.3+3249
• Hot exozodiacal dust: an exocometary origin?
• The R-Process Alliance: Discovery of a low-alpha, r-Process-Enhanced Metal-Poor Star in the Galactic Halo
• Investigating dynamical properties of evolved Galactic open clusters
• Gaia Data Release 1: Validation of the photometry
• Three Hot-Jupiters on the upper edge of the mass-radius distribution: WASP-177, WASP-181 and WASP-183
• HERBS I: Metallicity and alpha enhancement along the Galactic bulge minor axis
• Two Jovian planets around the giant star HD202696. A growing population of packed massive planetary pairs around massive stars?
• TESS Habitable Zone Star Catalog
• Using Multiwavelength Variability to Explore the Connection between X-ray Emission, the Far-Ultraviolet H2 Bump, and Accretion in T Tauri Stars
• Probing ISM Structure in Trumpler 14 & Carina I Using The Stratospheric Terahertz Observatory 2
• The Kitt Peak Electron Multiplying CCD demonstrator
• A wide-area photometric and astrometric (Gaia DR2) study of the young cluster NGC 6530
• The course of the Orphan Stream in the Northern Galactic Hemisphere traced with Gaia DR2
• Candidates for RR~Lyrae in binary systems from the OGLE Galactic bulge survey
• The fast transient sky with Gaia
• A code for robust astrometric solution of astronomical images
• High-resolution spectroscopic analysis of a large sample of Li-rich giants found by LAMOST
• Chemical abundances in the metal-intermediate GC NGC 6723
• Ripple patterns in in-plane velocities of OB stars from LAMOST and Gaia
• Evidence for spatially-correlated $Gaia$ parallax errors in the $Kepler$ field
• $12660$ spotted stars toward the OGLE Galactic bulge fields
• Very Low-Mass Stars and Brown Dwarfs in Upper Scorpius using Gaia DR1: Mass Function, Disks and Kinematics
• Precise CCD positions of Triton in 2014-2016 using the newest Gaia DR1 star catalogue
• Absolute Magnitude Calibration for W UMa-Type Systems Based on Gaia Data
• Observing the gas component of circumplanetary disks around wide-orbit planet-mass companions in the (sub)mm regime
• The ultracool helium-atmosphere white dwarf companion of PSR J0740+6620?
• New type II Cepheids from VVV data towards the Galactic center
• Chemical Abundances Of Open Clusters From High-Resolution Infrared Spectra. I. NGC 6940
• What is the Milky Way outer halo made of? High resolution spectroscopy of distant red giants
• So close, so different: characterization of the K2-36 planetary system with HARPS-N
• Bok globule CB17: Polarization, extinction and distance
• 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)
• Constraining the orbit of the planet-hosting binary $\tau$ Boötis: Clues about planetary formation and migration
• The local spiral arm in the LAMOST-Gaia common stars?
• Comparison of the Asteroseismic Mass Scale of Red Clump Giants with Photometric Mass Estimates
• Multiple kinematical populations in Vela OB2 from Gaia DR1 data
• Unresolved binaries and Galactic clusters' mass estimates
• Fundamental parameters and evolutionary status of the magnetic chemically peculiar stars HD 188041 (V1291 Aquilae), HD 111133 (EP Virginis), and HD 204411. Spectroscopy versus interferometry
• Calibration of the photometric G passband for Gaia Data Release 1
• Transient spiral arms from far out of equilibrium gravitational evolution
• Antisolar differential rotation with surface lithium enrichment on the single K-giant V1192 Orionis
• Asteroid mass estimation using Markov-chain Monte Carlo
• Supervised Learning Detection of Sixty Non-Transiting Hot Jupiter Candidates
• Ultracool dwarf benchmarks with \emph{Gaia} primaries
• Flying far and fast: the distribution of distant hypervelocity star candidates from Gaia DR2 data
• A high-mass Planetary Nebula in a Galactic Open Cluster
• MUSE unravels the ionisation and origin of metal enriched absorbers in the gas halo of a z = 2.92 radio galaxy
• Visual Orbits of Spectroscopic Binaries with the CHARA Array. I. HD 224355
• Star-planet tidal interaction and the limits of gyrochronology
• Detailed chemical abundance analysis of the thick disk star cluster Gaia 1
• On the Oosterhoff dichotomy in the Galactic bulge: II. kinematical distribution
• Discovery of kilogauss magnetic fields on the nearby white dwarfs WD1105-340 and WD2150+591
• Angular Momentum Evolution of Young Stars in the Nearby Scorpius-Centaurus OB Association
• Orbital and physical parameters of eclipsing binaries from the All-Sky Automated Survey catalogue - X. Three high-contrast systems with secondaries detected with IR spectroscopy
• Detecting dark photon dark matter with Gaia-like astrometry observations
• The retrograde orbit of the globular cluster FSR1758 revealed with Gaia DR2
• Stars with fast Galactic rotation observed in Gaia TGAS: a signature driven by the Perseus arm?
• Volume uncertainty assessment method of asteroid models from disk-integrated visual photometry
• Physical properties of galactic RV Tauri stars from Gaia DR2 data
• Directly testing gravity with Proxima Centauri
• Luminous AGB variables in the dwarf Irregular Galaxy, NGC 3109
• CO Outflow Candidates Toward the W3/4/5 Complex I: The Sample and its Spatial Distribution
• The Massive and Distant Clusters of WISE Survey VI: Stellar Mass Fractions of a Sample of High-Redshift Infrared-selected Clusters
• Nearby Young, Active, Late-type Dwarfs in Gaia's First Data Release
• IRAM and Gaia views of multi-episodic star formation in IC1396A: The origin and dynamics of the Class 0 protostar at the edge of an HII region
• CLIcK: a Continuum and Line fItting Kit for circumstellar disks
• A VLBI study of the wind-wind collision region in the massive multiple HD 167971
• Magnetic activity of the young solar analogue V1358 Ori
• Modeling the Protoplanetary Disks of Two Brown Dwarfs in the Taurus Molecular Cloud
• Puzzling Blue Dips in the Black Hole Candidate Swift J1357.2-0933, from ULTRACAM, SALT, ATCA, Swift and NuSTAR
• The kinematics of Galactic disc white dwarfs in Gaia DR2
• Evidence of a non-conservative mass transfer for XTE J0929-314
• Atmospheres and UV Environments of Earth-like Planets Throughout Post-Main Sequence Evolution
• Near-infrared spectroscopy of the massive stellar population of W51: evidence for multi-seeded star formation
• The vertical metallicity gradients of mono-age stellar populations in the Milky Way with the RAVE and Gaia data
• Line Profiles of the Calcium I Resonance Line in Cool Metal-polluted White Dwarfs
• Evidence of Hubble flow-like motion of young stellar populations away from the Perseus arm
• The K2-ESPRINT Project VI: K2-105 b, a Hot-Neptune around a Metal-rich G-dwarf
• Hubble Space Telescope photometry of multiple stellar populations in the inner parts of NGC 2419
• The future of stellar occultations by distant solar system bodies: perspectives from the Gaia astrometry and the deep sky surveys
• Galactic Sources Detected in the NuSTAR Serendipitous Survey
• Searching for Stars Closely Encountering with the Solar System Based on Data from the Gaia DR1 and RAVE5 Catalogues
• Identifications of Faint Chandra Sources in the Globular Cluster M3
• OGLE-2018-BLG-0022: A Nearby M-dwarf Binary
• A modified CoRoT detrend algorithm and the discovery of a new planetary companion
• Four Metal-poor Stars in the Sagittarius Dwarf Spheroidal Galaxy
• MUSE-AO view of the starburst-AGN connection: NGC 7130
• NSV 1440: First WZ Sge-type Object in AM CVn stars and candidates
• A low-mass triple system with a wide L/T transition brown dwarf component: NLTT 51469AB/SDSS 2131-0119
• GRAVITY spectro-interferometric study of the massive multiple stellar system HD 93 206 A
• Abundance analyses of the new R Coronae Borealis stars: ASAS-RCB-8 and ASAS-RCB-10
• The Belgian repository of fundamental atomic data and stellar spectra (BRASS) II. Quality assessment of atomic data for unblended lines in FGK stars
• Confronting expansion distances of planetary nebulae with Gaia DR2 measurements
• Investigation of the Globular Cluster NGC 2808 with the Ultra-Violet Imaging Telescope
• Coronal X-ray emission and planetary irradiation in HD 209458
• Recovering saturated images for high dynamic Kernel-Phase analysis Application to the determination of dynamical masses for the system Gl 494AB
• Spectroscopic confirmation of the low-latitude object FSR 1716 as an old globular cluster
• Young open cluster IC 4996 and its vicinity: multicolor photometry and Gaia DR2 astrometry
• The Measured Impact of Chromatic Atmospheric Effects on Barycentric Corrections: Results from the EXtreme PREcision Spectrograph
• ISPY -- NaCo Imaging Survey for Planets around Young stars. Discovery of an M dwarf in the gap between HD 193571 and its debris ring
• Opacity distribution functions for stellar spectra synthesis
• A multi-wavelength study of the debris disc around 49 Cet
• The intricate Galaxy disk: velocity asymmetries in Gaia-TGAS
• Magnetic field geometry and chemical abundance distribution of the He-strong star CPD -57 3509
• Gaia Data Release 1: The archive visualisation service
• YZ Phe: an active contact binary with variation of the O'Connell effect and orbital period change
• New binaries in the epsilon Cha association
• Collisions of Terrestrial Worlds: The Occurrence of Extreme Mid-Infrared Excesses around Low-Mass Field Stars
• Ultralow-amplitude RR Lyrae Stars in M4
• Proper Motions and Shock Wave Dynamics in the HH 7-11 Stellar Jet
• Unveiling the nature of the Gemini multiconjugate adaptive optics system distortions
• A massive nebula around the Luminous Blue Variable star RMC143 revealed by ALMA
• A compact gaseous accretion disk in Keplerian rotation around MWC147
• The ssos Pipeline: Identification of Solar System Objects in Astronomical Images
• RR Lyrae Stars in the Field of Sagittarius II
• Spot evolution in the eclipsing binary CoRoT 105895502
• Discovery of a Compact Companion to a Nearby Star
• A distortion solution for the Bok telescope with four CCD chips
• Variable Stars in Young Open Cluster NGC 2244
• Parameters of the Link between the Optical and Radio Frames from Gaia DR2 Data and VLBI Measurements
• Determination of astrophysical parameters of quasars within the Gaia mission
• New powerful outburst of the unusual young star V1318 Cyg S (LkHα 225)
• The GALAH survey: unresolved triple Sun-like stars discovered by the Gaia mission
• A method to calculate the local density distribution of the Galaxy from the Tycho-Gaia Astrometric Solution data
• The young star population of L1188
• Two's a crowd? Characterising the effect of photometric contamination on the extraction of the global asteroseismic parameter ${\nu }_{\text{max}}$ in red-giant binaries
• SN 2016B a.k.a ASASSN-16ab: a transitional type II supernova
• Testing the distance scale of the Gaia TGAS catalogue by kinematic method
• Application of Time Transfer Functions to Gaia's global astrometry - Validation on DPAC simulated Gaia-like observations
• Comparison of Gaia and asteroseismic distances
• The GAPS Programme with HARPS-N at TNG XV. A substellar companion around a K giant star identified with quasi-simultaneous HARPS-N and GIANO measurements
• A catalogue of oxygen-rich pulsating giants in the galactic halo and the Sagittarius stream
• Detecting unresolved binary stars in Euclid VIS images
• Proper Motions of the Satellites of M31
• Pulsations and Period Variations of the $\delta$ Scuti Star AN Lyncis in a possible three-body system
• Helium-Star Models with Optically Thick Winds: Implications for the Internal Structures and Mass-Loss Rates of Wolf-Rayet Stars
• An analysis of binary microlensing event OGLE-2015-BLG-0060
• Understanding the evolution of Atira-class asteroid 2019 AQ3, a major step towards the future discovery of the Vatira population
• Astronomical distance scales in the Gaia era
• Vertical Distribution and Kinematics of Protoplanetary Nebulae in the Galaxy
• A revisit to the enigmatic variable star 21 Comae
• Calibrations of SITELLE's first data release
• The Case for a Large-Scale Occultation Network
• Gravitational wave effects on astrometric observables
• Open star clusters in the Milky Way - Comparison of photometric and trigonometric distance scales based on Gaia TGAS data
• Optimal extinction measurements - I. Single-object extinction inference
• The influence of dark matter halo on the stellar stream asymmetry via dynamical friction
• A new method of measuring center-of-mass velocities of radially pulsating stars from high-resolution spectroscopy
• Overall properties of the Gaia DR1 reference frame
• An astrometric and spectroscopic study of the $\delta$ Scuti variable HD21190 and its wide companion CPD -83${}^{\circ }$ 64B
• Relativistic Astronomy. II. In-Flight Solution of Motion and Test of Special Relativity Light Aberration
• Data-driven stellar parameters for southern TESS FGK targets
• A study of full space motions of outer Galactic disk A and F stars in two deep pencil-beams
• A catalogue of spectroscopic binary candidate stars derived from a comparison of Gaia DR2 with other radial velocity catalogues
• OGLE-2018-BLG-0022: First Prediction of an Astrometric Microlensing Signal from a Photometric Microlensing Event
• Gaia and VLT astrometry of faint stars: Precision of Gaia DR1 positions and updated VLT parallaxes of ultracool dwarfs
• The impact of geometric distortions in multiconjugate adaptive optics astrometric observations with future extremely large telescopes
• Differential Astrometric Framework for the Jupiter Relativistic Experiment with Gaia
• Variable Stars in Sagittarius Globular Clusters I. Arp~2
• Faint, high proper motion star candidates selected from the SDSS and PS1 catalogs
• A first view with GAIA on KIC 8462852 - distance estimates and a comparison to other F stars
• A test field for Gaia. Radial velocity catalogue of stars in the South Ecliptic Pole
• Constraints on HD113337 fundamental parameters and planetary system. Combining long-base visible interferometry, disk imaging and high-contrast imaging
• A deep staring campaign in the Sigma Orionis cluster. Variability in substellar members
• An improved solution to geometric distortion using an orthogonal method
• Search for Stellar Streams Based on Data from the RAVE5 and Gaia TGAS Catalogues
• Precision Time-series Photometry in the Thermal Infrared with a 'Wall-Eyed' Pointing Mode at the Large Binocular Telescope
• Sliced Inverse Regression for the inference of stellar fundamental parameters