J/A+A/677/A162ivo://CDS.VizieR/J/A+A/677/A162doi:10.26093/cds/vizier.36770162CDSBrandner W.Calissendorff P.Kopytova T.2025-02-06T20:00:57Z2023-09-21T09:24:22ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.fropen-star-clustersstellar-massesvisible-astronomyThe Gaia astrophysical parameters inference system (Apsis) provides astrophysical parameter estimates for several to hundreds of millions of stars. Aims. We aim to benchmark Gaia DR3 Apsis. We compiled approximately 1500 bona fide single stars in the Hyades and Pleiades open clusters for validation of PARSEC isochrones, and for comparison with Apsis estimates. PARSEC stellar isochrones in the Gaia photometric system enable us to assign average ages and metallicities to the clusters, and mass, effective temperature, luminosity, and surface gravity to the individual stars. Apsis does not recover the single-age, single-metallicity characteristic of the cluster populations. Ages assigned to cluster members seemingly follow the input template for Galactic populations, with earlier-type stars being systematically assigned younger ages than later-type stars. Cluster metallicities are underestimated by 0.1 to 0.2dex. Effective temperature estimates are in general reliable. Surface gravity estimates reveal strong systematic errors for specific ranges of the Gaia BP-RP colours. We caution that Gaia DR3 Apsis estimates can be subject to significant systematic uncertainties. Some of the Apsis estimates, such as metallicity, might only be meaningful for statistical studies of the time-averaged Galactic stellar population, but are not recommended to be used for individual stars.2023A&A...677A.162Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/677/A162CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/352 : Distances to 1.47 billion stars in Gaia EDR3 (Bailer-Jones+, 2021)I/355 : Gaia DR3 Part 1. Main source (Gaia Collaboration, 2022)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/677/A162https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/677/A162http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/677/A162https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/677/A162https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/677/A162http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/677/A162GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/677/A162/table2 (Astrophysical parameters of bona fide single stars in the Pleiades open cluster)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/677/A162/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/677/A162/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/677/A162/table2?GETtext/xml+votable180.050000true52.7970830624.232163060.0055555555555555564/28 5/116 118 120-121 123-124 6/365-367 378-379 413 437 468 470-471 476 478-479 489 500 503-505 5071.9867573869263685e-19 3.916500758235022e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/677/A162?format=asciiOpticaldefaultJ/A+A/677/A162/table2Astrophysical parameters of bona fide single stars in the Pleiades open clusterRPmagGaia RP magnitude (1)magphot.mag;em.opt.Rfloate_BPmagGaia BP magnitude uncertainty (1)magstat.error;phot.magfloate_RPmagGaia RP magnitude uncertainty (1)magstat.error;phot.magfloatMassMass (3)solMassphys.massfloate_MassMass uncertainty (3)solMassstat.error;phys.massfloatlogTlog Effective temperature (3)log(K)phys.temperature.effectivefloate_logTlog Effective temperature uncertainty (3)log(K)stat.errorfloatlogLlog Luminosity (3)log(solLum)phys.luminosityfloate_logLlog Luminosity uncertainty (3)log(solLum)stat.errorfloatloggSurface gravity (3)log(cm.s**-2)phys.gravityfloate_loggSurface gravity uncertainty (3)log(cm.s**-2)stat.errorfloatSimbadSimbad column added by the CDSmeta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGaiaDR3Gaia DR3 source_id (1)meta.id;meta.mainRA_ICRSBarycentric right ascension (ICRS) at Ep=2016.0 (1)degpos.eq.ra;meta.mainDE_ICRSBarycentric declination (ICRS) at Ep=2016.0 (1)degpos.eq.dec;meta.maindpgeoMedian photogeometric distance posterior (2)pcpos.distancefloatb_dpgeo16th quantile photogeometric distance posterior (2)pcpos.distancefloatB_dpgeo84th quantile photogeometric distance posterior (2)pcpos.distancefloatGmagGaia G magnitude (1)magphot.mag;em.optfloate_GmagGaia G magnitude uncertainty (1)magstat.error;phot.magfloatBPmagGaia BP magnitude (1)magphot.mag;em.opt.Bfloat