Towards Better Age Estimates for Stellar Populations: The Y^2 Isochrones for Solar Mixture

Abstract

We have constructed a new set of isochrones, called the Y^2 Isochrones, that represent an update of the Revised Yale Isochrones (RYI), using improved opacities and equations of state. Helium diffusion and convective core overshoot have also been taken into consideration. This first set of isochrones is for the scaled solar mixture. A subsequent paper will consider the effects of alpha-element enhancement, believed to be relevant in many stellar systems. Two additionally significant features of these isochrones are that (1) the stellar models start their evolution from the pre-main sequence birthline instead of from the zero-age main sequence, and (2) the color transformation has been performed using both the latest table of Lejeune et al., and the older, but now modified, Green et al. table. The isochrones have performed well under the tests conducted thus far. The reduction in the age of the Galactic globular clusters caused by this update in stellar models alone is approximately 15% relative to RYI-based studies. When the suggested modification for the alpha-element enhancement is made as well, the total age reduction becomes approximately 20%. When post-RGB evolutionary stages are included, we find that the ages of globular clusters derived from integrated colors are consistent with the isochrone fitting ages. Isochrones are available from http://achee.srl.caltech.edu.

48 pages, LaTeX, 18 Figures, 7 Tables

Cited by in corpus (608)

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• Absolute dimensions of the G7+K7 eclipsing binary star IM Virginis: Discrepancies with stellar evolution models
• Towards precise ages for single stars in the field. Gyrochronology constraints at several Gyr using wide binaries. I. Ages for initial sample
• Rotationally-modulated g-modes in the rapidly-rotating delta Scuti star Rasalhague (alpha Ophiuchi)
• Revisiting the 16 Cygni planet host at unprecedented precision and exploring automated tools for precise abundances
• HATS-18 b: An Extreme Short--Period Massive Transiting Planet Spinning Up Its Star
• Two New Long-Period Giant Planets from the McDonald Observatory Planet Search and Two Stars with Long-Period Radial Velocity Signals Related to Stellar Activity Cycles
• KELT-4Ab: An inflated Hot Jupiter transiting the bright (V~10) component of a hierarchical triple
• Cleaning spectroscopic samples of stars in nearby dwarf galaxies: The use of the nIR MgI line to weed out Milky Way contaminants
• Variations in Star Formation History and the Red Giant Branch Tip
• Improved $u^{\prime }{g}^{\prime }{r}^{\prime }{i}^{\prime }{z}^{\prime }$ to $UBV{R}_C{I}_C$ Transformation Equations for Main Sequence Stars
• Comprehensive time series analysis of the transiting extrasolar planet WASP-33b
• Investigating the architecture and internal structure of the TOI-561 system planets with CHEOPS, HARPS-N and TESS
• Mass and radius determinations for five transiting M-dwarf stars
• The Absence of Stars in Compact High-Velocity Clouds
• Lithium Abundances of the Super-Metal-Rich Open Cluster NGC 6253
• The stellar content of the Hamburg/ESO survey VI. The metallicity distribution of main-sequence turnoff stars in the Galactic halo
• Confronting uncertainties in stellar physics II. exploring differences in main-sequence stellar evolution tracks
• Extragalactic Globular Clusters in the Near Infrared: III. NGC 5846 and NGC 7192
• Stellar parameters and accretion rate of the transition disk star HD 142527 from X-Shooter
• A Multi-Planet System Transiting the $V$ = 9 Rapidly Rotating F-Star HD 106315
• Five New Transits of the Super-Neptune HD 149026
• WIYN Open Cluster Study XVI: Optical/Infrared Photometry and Comparisons With Theoretical Isochrones
• Stellar Winds and Coronae of Low-mass Pop. II/III Stars
• HAT-P-31b,c: A Transiting, Eccentric, Hot Jupiter and a Long-Period, Massive Third-Body
• Solar twins and the Barium puzzle
• Spectroscopic properties of cool Ursa Major group members
• A substellar component orbiting the F-star 30 Ari B
• HAT-P-24b: An inflated hot-Jupiter on a 3.36d period transiting a hot, metal-poor star
• Absolute properties of the eclipsing binary system AQ Serpentis: A stringent test of convective core overshooting in stellar evolution models
• High precision analysis of the solar twin HIP 100963
• Broad-band photometric colors and effective temperature calibrations for late-type giants. II. Z<0.02
• The White Dwarf Population in NGC 1039 (M34) and the White Dwarf Initial-Final Mass Relation
• On the Age and Metallicity Estimation of Spiral Galaxies Using Optical and Near-Infrared Photometry
• A Physical Orbit for the High Proper Motion Binary HD 9939
• A Wide-Field View of Leo II -- A Structural Analysis Using the SDSS
• The White Dwarf Age of NGC 2477
• A System of Three Super Earths Transiting the Late K-Dwarf GJ 9827 at Thirty Parsecs
• Probing the RGB-phase transition: Near-IR photometry of six intermediate age LMC clusters
• A sub-Neptune and a non-transiting Neptune-mass companion unveiled by ESPRESSO around the bright late-F dwarf HD 5278 (TOI-130)
• Accurate parameters for HD 209458 and its planet from HST spectrophotometry
• Radii of Rapidly-Rotating Stars, with Application to Transiting-Planet Hosts
• A color-period diagram for the open cluster M 48 (NGC 2548), and its rotational age
• Statistical analysis of stellar evolution
• Orbital and physical parameters of eclipsing binaries from the ASAS catalogue -- I. A sample of systems with components' masses between 1 and 2 M${}_{\odot }$
• Abundance trend with condensation temperature for stars with different Galactic birth places
• Validation of 13 Hot and Potentially Terrestrial TESS Planets
• The G+M eclipsing binary V530 Orionis: A stringent test of magnetic stellar evolution models for low-mass stars
• Orbital and physical parameters of eclipsing binaries from the ASAS catalogue - IV. A 0.61 + 0.45 M_sun binary in a multiple system
• HATS-25b through HATS-30b: A Half-dozen New Inflated Transiting Hot Jupiters from the HATSouth Survey
• A High-Resolution Spectrum of the Highly Magnified Bulge G-Dwarf MOA-2006-BLG-099S
• Testing Models of Stellar Structure and Evolution I. Comparison with Detached Eclipsing Binaries
• NPOI Observations of the Exoplanet Host kappa Coronae Borealis and Their Implications for the Star's and Planet's Masses and Ages
• CoRoT 101186644: A transiting low-mass dense M-dwarf on an eccentric 20.7-day period orbit around a late F-star
• Testing intermediate-age stellar evolution models with VLT photometry of LMC clusters. II. Analysis with the Yale models
• Improved Constraints on the Initial-to-Final Mass Relation of White Dwarfs using Wide Binaries
• The photometric evolution of dissolving star clusters: II. Realistic models. Colours and M/L ratios
• Recovering stellar population parameters via different population models and stellar libraries
• Deciphering the evolution of the Milky Way discs: Gaia APOGEE Kepler giant stars and the Besançon Galaxy Model
• The Oldest Stars of the Extremely Metal-Poor Local Group Dwarf Irregular Galaxy Leo A
• Two Jovian-Mass Planets in Earthlike Orbits
• The photospheric abundances of active binaries II. Atmospheric parameters and abundance patterns for 6 single-lined RS CVn systems
• EPIC247098361b: a transiting warm Saturn on an eccentric $P=11.2$ days orbit around a $V=9.9$ star
• HAT-P-49b: A 1.7 M_J Planet Transiting a Bright 1.5 M_S F-Star
• The Flattening Metallicity Gradient in the Milky Way's Thin Disk
• Surveying the Inner Halo of the Galaxy with 2MASS-Selected Horizontal Branch Candidates
• An E-ELT Case Study: Colour-Magnitude Diagrams of an Old Galaxy in the Virgo Cluster
• The photospheric abundances of active binaries III. Abundance peculiarities at high activity level
• Metallicity and age effects on lithium depletion in solar analogues
• Chemical evolution of the Galactic bulge as traced by microlensed dwarf and subgiant stars. Detailed abundance analysis of OGLE-2008-BLG-209S
• R-process-rich stellar streams in the Milky Way
• Eclipsing binaries observed with the WIRE satellite I. Discovery and photometric analysis of the new bright A0IV eclipsing binary Psi Centauri
• T-Lyr1-17236: A Long-Period Low-Mass Eclipsing Binary
• Improved Main Sequence Turnoff Ages of Young Open Clusters: Multicolor UBV Techniques & the Challenges of Rotation
• The first high-amplitude delta Scuti star in an eclipsing binary system
• Newly-Discovered Globular Clusters in NGC 147 and NGC 185 from PAndAS
• Solar twins in M67 : Evolutionary status and lithium abundance
• Initial-Final Mass Relation for 3 to 4 M${}_{\odot }$ Progenitors of White Dwarfs from the Single Cluster NGC 2099
• The Minimum Mass of Rotating Main Sequence Stars and its Impact on the Nature of Extended Main Sequence Turnoffs in Intermediate-Age Star Clusters in the Magellanic Clouds
• Serendipitous discovery of the faint solar twin Inti 1
• Physical Orbit for Lambda Virginis and a Test of Stellar Evolution Models
• HAT-P-56b: An inflated massive Hot Jupiter transiting a bright F star followed up with K2 Campaign 0 observations
• Testing Stellar Models With An Improved Physical Orbit for 12 Bootis
• Abundances on the Main Sequence of Omega Centauri
• TOI-150b and TOI-163b: two transiting hot Jupiters, one eccentric and one inflated, revealed by TESS near and at the edge of the JWST CVZ
• HD 191939: Three Sub-Neptunes Transiting a Sun-like Star Only 54 pc Away
• Modeling Convective Core Overshoot and Diffusion in Procyon Constrained by Asteroseismic Data
• Sub-m s${}^{-1}$ upper limits from a deep HARPS-N radial-velocity search for planets orbiting HD 166620 and HD 144579
• HATS-54b-HATS-58Ab: five new transiting hot Jupiters including one with a possible temperate companion
• Y2 Isochrones with an Improved Core Overshoot
• Stromlo Stellar Tracks: non-solar scaled abundances for massive stars
• The formation and survival of the Milky Way's oldest stellar disk
• Survey for Transiting Extrasolar Planets in Stellar Systems: I. Fundamental Parameters of the Open Cluster NGC 1245
• WIYN Open Cluster Study. XIX. Main Sequence Fitting Distances to Open Clusters Using V-K Color-Magnitude Diagrams
• Phase-space Properties and Chemistry of the Sagittarius Stellar Stream Down to the Extremely Metal-poor ($[Fe/H]\lesssim -3$) Regime
• The K2-ESPRINT Project IV: A Hot Jupiter in a Prograde Orbit with a Possible Stellar Companion
• Combined Chandra, XMM-Newton and Hubble Space Telescope observations of the Galactic globular cluster NGC 2808
• How to Weigh a Star Using a Moon
• DI Her as a test of internal stellar structure and General Relativity: New apsidal motion rate and evolutionary models
• Abundances of Na, Mg, and K in the atmospheres of red giant branch stars of Galactic globular cluster 47 Tucanae
• Orbital and physical parameters of eclipsing binaries from the ASAS catalogue -- II. Two spotted M < 1 M${}_{\odot }$ systems at different evolutionary stages
• Chemical Composition in the Globular Cluster M71 from Keck/HIRES Spectra of Turn-Off Stars
• Dynamical Mass of the Exoplanet Host Star HR 8799
• The old open cluster NGC 2112: updated estimates of fundamental parameters based on a membership analysis
• The Star Formation Histories of Four Fields Spanning the Minor Axis of NGC 6822
• A new study of stellar substructures in the Fornax dwarf spheroidal galaxy
• WIYN Open Cluster Study LXII: Comparison of Isochrone Systems using Deep Multi-Band Photometry of M35
• The Relation between Near-Infrared Luminosity of RGB Bumps and Metallicity of Galactic Globular Clusters
• K2-60b and epic 216468514b. A sub-jovian and a jovian planet from the k2 mission
• MCMCI: A code to fully characterise an exoplanetary system
• The GALAH Survey: Temporal Chemical Enrichment of the Galactic Disk
• Finding cool subdwarfs using a V-J reduced proper-motion diagram: Stellar parameters for 91 candidates
• Abundances in Stars from the Red Giant Branch Tip to the Near the Main Sequence in M71: I. Sample Selection, Observing Strategy and Stellar Parameters
• Fundamental properties of nearby stars and the consequences on DeltaY/DeltaZ
• A Bright Short Period M-M Eclipsing Binary from the KELT Survey: Magnetic Activity and the Mass-Radius Relationship for M-dwarfs
• Orbital and physical parameters of eclipsing binaries from the ASAS catalogue -- III. Two new low-mass systems with rapidly evolving spots
• Bayesian Analysis of Two Stellar Populations in Galactic Globular Clusters I: Statistical and Computational Methods
• Physical parameters of pre-main sequence stars in open clusters
• Discovery of the Partially Eclipsing White Dwarf Binary SDSS J143547.87+373338.5
• Bayesian Investigation of Isochrone Consistency Using the Old Open Cluster NGC 188
• A Bayesian Approach to Deriving Ages of Individual Field White Dwarfs
• WIYN Open Cluster Study 89. M48 (NGC 2548) 2: Lithium Abundances in the 420 Myr Open Cluster M48 From Giants Through K Dwarfs
• A New Approach to Convective Core Overshooting: Probabilistic Constraints from Color-Magnitude Diagrams of LMC Clusters
• Luminosity-metallicity relation for stars on the lower main sequence
• Absolute properties of the highly eccentric eclipsing binary star LV Herculis
• EPIC 228735255b - An eccentric 6.57 day transiting hot Jupiter in Virgo
• Asiago eclipsing binaries program. III. V570 Per
• Lithium depletion in solar analogs: age and mass effects
• Subgiants as probes of galactic chemical evolution
• The detailed chemical composition of the terrestrial planet host Kepler-10
• Physical parameter study of eight W Ursae Majoris-type contact binaries in NGC 188
• HATS-31b Through HATS-35b: Five Transiting Hot Jupiters Discovered by the HATSouth Survey
• The Observed Distribution of Spectroscopic Binaries from the Anglo-Australian Planet Search
• HAT-P-42b and HAT-P-43b. Two Inflated Transiting Hot Jupiters from the HATNet Survey
• HATS-22b, HATS-23b and HATS-24b: Three new transiting Super-Jupiters from the HATSouth Project
• A search for cool subdwarfs: Stellar parameters for 134 candidates
• Characterization of the K2-19 Multiple-Transiting Planetary System via High-Dispersion Spectroscopy, AO Imaging, and Transit Timing Variations
• Spectroscopic binaries in the Solar Twin Planet Search program: from substellar-mass to M dwarf companions
• HATS-43b, HATS-44b, HATS-45b, and HATS-46b: Four Short Period Transiting Giant Planets in the Neptune-Jupiter Mass Range
• Phosphorus Abundances in the Hyades and Galactic Disk
• EPIC 201498078b: A low density Super Neptune on an eccentric orbit
• Two warm, low-density sub-Jovian planets orbiting bright stars in K2 campaigns 13 and 14
• Searching for new solar twins: The Inti survey for the Northern Sky
• K2-287b: an Eccentric Warm Saturn transiting a G-dwarf
• Planetary evolution with atmospheric photoevaporation II: Fitting the slope of the radius valley by combining boil-off and XUV-driven escape
• Physical Properties of the Transiting Planetary System TrES-3
• Resonant and Ultra-short-period Planet Systems are at Opposite Ends of the Exoplanet Age Distribution
• HATS-11b and HATS-12b: Two transiting Hot Jupiters orbiting sub-solar metallicity stars selected for the K2 Campaign 7
• Absolute properties of the spotted eclipsing binary star CV Bootis
• KELT-22Ab: A Massive Hot Jupiter Transiting a Near Solar Twin
• HATS-13b and HATS-14b: two transiting hot Jupiters from the HATSouth survey
• Spectral dating of high-redshift stellar populations
• A refined analysis of the low-mass eclipsing binary system T-Cyg1-12664
• Effect of Photodesorption on Snow Line at the Surface of Optically Thick Circumstellar Disks around Herbig Ae/Be Stars
• Absolute dimensions of eclipsing binaries. XXIX. The Am-type systems SW Canis Majoris and HW Canis Majoris
• HATS-39b, HATS-40b, HATS-41b, and HATS-42b: Three Inflated Hot Jupiters and a Super-Jupiter Transiting F Stars
• OGLE-2009-BLG-076S - The most metal-poor dwarf star in the Galactic bulge
• Extending a grid of hydrodynamic planetary upper atmosphere models
• The [Y/Mg] chemical clock in the Galactic Disk: The influence of metallicity and Galactic population in the solar neighbourhood
• A New Procedure for the Photometric Parallax Estimation
• Re-calibration of SDF/SXDS Photometric Catalogs of Suprime-Cam with SDSS Data Release 8
• Absolute dimensions of the metallic-line eclipsing binary V501 Monocerotis
• The quadruple-lined, doubly-eclipsing system V482 Persei
• SOAR Adaptive Optics Observations of the Globular Cluster NGC6496
• Light Element Abundances and Multiple Populations in M10
• Abundance analysis of the outer halo globular cluster Palomar 14
• S986 in M67: A Totally-Eclipsing Binary at the Cluster Turnoff
• Asiago eclipsing binaries program. II. V505 Per
• A Quintuple Star System Containing Two Eclipsing Binaries
• Global Analysis of KOI-977: Spectroscopy, Asteroseismology, and Phase-curve Analysis
• Precise Ages of Field Stars From White Dwarf Companions in Gaia DR2
• Asteroseismic analysis of two alpha-enhanced stars KIC 7976303 and KIC 8694723
• Orbital and physical parameters of eclipsing binaries from the ASAS catalogue - V. Investigation of subgiants and giants: the case of ASAS J010538-8003.7, ASAS J182510-2435.5, and V1980 Sgr
• Li abundances for solar twins in the open cluster M67
• Non-Keplerian effects in precision radial velocity measurements of double-line spectroscopic binary stars: numerical simulations
• Qatar Exoplanet Survey: Qatar-6b -- a grazing transiting hot Jupiter
• Influence of Inelastic Collisions with Hydrogen Atoms on Non-LTE Oxygen Abundance Determination in the Sun and late-type stars
• A Reanalysis of the Composition of K2-106b: an Ultra-short Period Super-Mercury Candidate
• The horizontal branch morphology of M31 globular clusters. Extreme second parameter effect in outer halo clusters
• Ages of 70 dwarfs of three populations in the solar neighborhood: considering O and C abundances in stellar models
• EPIC 246851721 b: A Tropical Jupiter Transiting a Rapidly Rotating Star in a Well-Aligned Orbit
• Evidence that Mass Loss on the Red Giant Branch Decreases with Metallicity
• Discovery of an $[Fe/H]\sim -4.8$ Star in $Gaia$ XP Spectra
• Giant Outer Transiting Exoplanet Mass (GOT 'EM) Survey: III. Recovery and Confirmation of a Temperate, Mildly Eccentric, Single-Transit Jupiter Orbiting TOI-2010
• Revisiting Delta Y/Delta Z from multiple main sequences in Globular Clusters: insight from nearby stars
• A systematic validation of hot Neptunes in TESS data
• Survey for Transiting Extrasolar Planets in Stellar Systems IV: Variables in the Field of NGC 1245
• HATS-50b through HATS-53b: four transiting hot Jupiters orbiting G-type stars discovered by the HATSouth survey
• Stellar Parameters for HD 69830, a Nearby Star with Three Neptune Mass Planets and an Asteroid Belt
• The Analysis of Isochrone Fitting Methods for Red Giant Branch Photometry, and Tip Red Giant Branch Distance Determination
• Pre-Main Sequence Evolutions of Solar Abundance Lowmass Stars
• Is [Y/Mg] a Reliable Age Diagnostic for FGK Stars?
• HAT-P-58b -- HAT-P-64b: Seven Planets Transiting Bright Stars
• The K2-ESPRINT Project VI: K2-105 b, a Hot-Neptune around a Metal-rich G-dwarf
• New high precision orbital and physical parameters of the double-lined low-mass spectroscopic binary BY Draconis
• HAT-P-55b: A Hot Jupiter Transiting a Sun-like Star
• From Theory to Observations and viceversa: theoretical uncertainties and observational constraints
• Characterising abundance-age relations of GALAH stars using oxygen-enhanced stellar models
• The DEdicated MONitor of EXotransits (DEMONEX): Seven Transits of XO-4b
• Orbital and physical parameters of eclipsing binaries from the ASAS catalogue -- XI. CHIRON investigation of long-period binaries
• Explosive nucleosynthesis of a metal-deficient star as the source of a distinct odd-even effect in the solar twin HIP 11915
• Estimation of singly-transiting K2 planet periods with Gaia parallaxes
• The YNEV stellar evolution and oscillation code
• Coronae of Zero/Low-Metal Low-Mass Stars
• Astrometric-spectroscopic determination of the absolute masses of the HgMn binary star Phi Herculis
• TOI-1736 and TOI-2141: two systems including sub-Neptunes around solar analogs revealed by TESS and SOPHIE
• Identifying Very Metal-Rich Stars with Low-Resolution Spectra: Finding Planet-Search Targets
• Global metallicity of globular cluster stars from colour-magnitude diagrams
• Absolute properties of the main-sequence eclipsing binary FM Leo
• An old warm Jupiter orbiting the metal-poor G-dwarf TOI-5542
• Characterization of the Red Giant HR 2582 Using the CHARA Array
• BS196: an old star cluster far from the SMC main body
• Project Solaris, a Global Network of Autonomous Observatories: Design, Commissioning, and First Science Results
• A New Age-Activity Relation For Solar Analogs that Accounts for Metallicity
• Absolute Properties of the Eclipsing Binary Star V501 Herculis
• Orbital and physical parameters of eclipsing binaries from the All-Sky Automated Survey catalogue - VII. V1200 Centauri: a bright triple in the Hyades moving group
• A Catalog of Periodic Variables in Open Clusters M35 and NGC 2158
• Absolute Properties of the Eclipsing Binary Star AP Andromedae
• HATS-36b and 24 other transiting/eclipsing systems from the HATSouth - K2 Campaign 7 program
• Absolute Properties of the Triple Star CF Tauri
• Stellar substructures in the solar neighbourhood. II. Abundances of neutron-capture elements in the kinematic Group 3 of the Geneva-Copenhagen survey
• Coronal Loops with Different Metallicities and Generalized RTV Scaling Laws
• Uncertainties and systematics in stellar evolution models of Red Giant Stars
• Discovery of TOI-1260d and the characterisation of the multi-planet system
• Differential interferometry of the rapid rotator Regulus
• Accurate absolute parameters of the binary system V4089 Sgr
• HATS-15 b and HATS-16 b: Two massive planets transiting old G dwarf stars
• Isochrones of M67 with an Expanded Set of Parameters
• Coronal Properties of Low-mass Population III Stars and the Radiative Feedback in the Early Universe
• Absolute Dimensions and Apsidal Motion of the Eccentric Binary V731 Cephei
• KSP-OT-201611a: A Distant Population II Dwarf Nova Candidate Discovered by the KMTNet Supernova Program
• The Multiple System HD 27638
• HATS-59b,c: A Transiting Hot Jupiter and a Cold Massive Giant Planet Around a Sun-Like Star
• An M dwarf Companion to an F-type Star in a young main-sequence binary
• New Determination of Fundamental Properties of Palomar 5 Using Deep DESI Imaging Data
• Analytic Estimates of the Achievable Precision on the Physical Properties of Transiting Planets Using Purely Empirical Measurements
• Age-Related Observations of Low Mass Pre-Main and Young Main Sequence Stars (Invited Review)
• Qatar Exoplanet Survey: Qatar-7b -- A Very Hot Jupiter Orbiting a Metal Rich F-Star
• Fitting Formulae and Constraints for the Existence of S-type and P-type Habitable Zones
• The Effect of Differential Limb Magnification on Abundance Analysis of Microlensed Dwarf Stars
• The effects of individual metal contents on isochrones for C, N, O, Na, Mg, Al, Si, and Fe
• A Spectroscopic Analysis of a Sample of K2 Planet-Host Stars: Stellar Parameters, Metallicities and Planetary Radii
• The peculiar composition of the Sun is not related to giant planets
• Potential Impact of the Sagittarius Dwarf Galaxy on the Formation of Young O-rich Stars
• Tracing the origin of moving groups I. The γ Leo moving group with high resolution spectra from the Subaru Telescope
• Age and convective core overshooting calibrations in CPD-54 810 binary system. Statistical investigation on the solution robustness
• Study of infrared excess from circumstellar disks in binaries with Spitzer/IRAC
• ${\zeta }^1+{\zeta }^2$ Reticuli binary system: A puzzling chromospheric activity pattern
• Orbital and physical parameters of eclipsing binaries from the ASAS catalogue -- IX. Spotted pairs with red giants
• A Sr-Rich Star on the Main Sequence of Omega Centauri
• A Search for Transiting Planets in the Globular Cluster M4 with K2: Candidates and Occurrence Limits
• Absolute Properties of the Triple Star HP Aurigae
• Pixel Color-Magnitude Diagram Analysis of the Brightest Cluster Galaxies in Dynamically Young and Old Clusters, Abell 1139 and Abell 2589
• Carbon Abundance Inhomogeneities and Deep Mixing Rates in Galactic Globular Clusters
• Field Blue Stragglers and Related Mass Transfer Issues
• Stellar models: firm evidence, open questions and future developments
• A Hot Saturn Near (but unassociated with) the Open Cluster NGC 1817
• Nonlinear Color-Metallicity Relations of Globular Clusters. IX. Different Radial Number Density Profiles between Blue and Red Clusters
• ASASSN-21js: A multi-year transit of a ringed disc
• Migration and Evolution of giant ExoPlanets (MEEP) II: Super-Jupiters and Lithium-rich Host Stars
• Planets Around Solar Twins/Analogs (PASTA) II: chemical abundances, systematic offsets, and clues to planet formation
• The Origin of the Metal-Poor Common Proper Motion Pair HD 134439/134440: Insights from New Elemental Abundances
• TOI-3568 b: a super-Neptune in the sub-Jovian desert
• The Power of Principled Bayesian Methods in the Study of Stellar Evolution
• A Preliminary Seismic Analysis of 51 Peg: Large and Small Spacings from Standard Models
• Spectroscopy of TOI-1259B -- an unpolluted white dwarf companion to an inflated warm Saturn
• Toward a homogeneous set of transiting planet parameters
• Determination of stellar, orbital and planetary parameters using complete Monte-Carlo analysis -- the case of HAT-P-7b
• The Missing Link: Testing Galactic Chemical Evolution Models with the First Multi-Isotopic Abundances in Solar Twin Stars
• Towards Understanding the Nature of Young Detached Binary System HD 350731
• Build-up and survival of the disc: From numerical models of galaxy formation to the Milky Way
• Stellar substructures in the Galactic disc and halo: Properties, origins, and evolution
• Absolute dimensions of the low-mass eclipsing binary system NSVS 10653195
• Stellar Characterization and a Chromospheric Activity Analysis of a K2 Sample of Planet-Hosting Stars
• Stellar age determination using deep neural networks: Isochrone ages for 1.3 million stars, based on BaSTI, MIST, PARSEC, Dartmouth and SYCLIST evolutionary grids
• Astrophysical and Structural Parameters, And Dynamical Evolution Of The Open Clusters NGC 1245 And NGC 2099
• Discovery of a multi-planetary system orbiting the aged Sun-like star HD 224018
• Isochrone-cloud fitting and asteroseismology of the Kepler open cluster NGC6866
• Impact of the low solar abundance on the ages of globular clusters
• The GAPS Programme at TNG. LIII. New insights on the peculiar XO-2 system
• The mass and radius of the M-dwarf companion in the double-lined eclipsing binary T-Cyg1-01385
• Ages of Main-Sequence Turn-Off Stars from the GALAH Survey
• The Solar Twin Planet Search: IV. The Sun as a typical rotator and evidence for a new rotational braking law for Sun-like stars
• The Metallicity Distribution Function in Outer Halo Fields of Simulated Elliptical Galaxies Compared to Observations of NGC 5128
• HAT-P-68b: A Transiting Hot Jupiter Around a K5 Dwarf Star
• The Transits of Extrasolar Planets with Moons
• Observational Constraints From Binary Stars on Stellar Evolution Models