J/A+A/711/A54ivo://CDS.VizieR/J/A+A/711/A54CDSde Laverny P.Recio-Blanco A.Navarrete C.Palicio P.A.Spitoni E.2026-07-09T16:47:23Z2026-07-02T09:32:36ZCDS support team

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

cds-question@unistra.frsurveysinterstellar-reddeningstellar-radiistellar-massesvisible-astronomyThe Gaia/DR3 GSP-Spec module has published the atmospheric parameters of up to 5.6 million stars, thanks to the analysis of their Radial Velocity Spectrometer spectra. By combining these spectroscopic parameters with Gaia parallax and photometric measurements, a large catalogue of interstellar colour excesses and extinctions, complemented with stellar luminosities, radii and masses is constructed, without relying on any stellar evolution or structure models. This catalogue also contains their associated uncertainties estimated from Monte-Carlo realisations, for about 4.6 million stars. A system of quality flags based on the GSP-Spec quality parameters, the achieved numerical precision, and the Gaia astrometric quality is presented. Adopting these flags, we defined a sub-sample of high-accuracy and precision parameters of more than 1.5 million stars. The impact of possible GSP-Spec parameter inaccuracies on the derived extinctions, luminosities, radii and masses are also explored, revealing that the mass is the most affected quantity. The validations of the radii and masses, by comparison with interferometric and asteroseismic data, confirm their high-quality, even when the targets suffer from large interstellar extinction. We also emphasize that they are fully compatible and homogeneous with the GSP-Spec parameters. This allows to avoid systematics and biases that could be hidden when combining data from different (and potentially) heterogeneous catalogues. Some example applications of this catalogue are finally presented: (i) exoplanet radii and masses, (ii) present day mass distribution functions, (iii) identification of Galactic populations from their mass distribution, and (iv) Galactic halo accreted star luminosities and masses confirming their merger epochs.2026A&A...711A..54Dhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/711/A54CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/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/711/A54https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/711/A54http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/711/A54https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/711/A54https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/711/A54http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/711/A54GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/711/A54/table1 (Gaia GSP-Spec catalogue of interstellar extinctions, and stellar luminosities, radii and masses)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/711/A54/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/711/A54/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/711/A54/table1?GETtext/xml+votable180.050000true241.0777628-57.45679140.0055555555555555560/0-11 6/https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/711/A54?format=asciiOpticaldefaultJ/A+A/711/A54/table1Gaia GSP-Spec catalogue of interstellar extinctions, and stellar luminosities, radii and massesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGaiaDR3Gaia DR3 Identificationmeta.id;meta.mainTeffAdopted effective temperatureKphys.temperature.effectiveinte_TeffTeff uncertaintyKstat.error;phys.temperature.effectivefloatloggAdopted surface gravitylog(cm.s**-2)phys.gravitydoublee_logglogg uncertaintylog(cm.s**-2)stat.errordoubleMetaAdopted metallicityphys.abund.Zdoublee_MetaMetallicity uncertaintystat.errordouble[alpha/Fe]? Adopted enhancement in alpha-elts w.r.t. Fephys.abunddoublenullablee_[alpha/Fe]? [alpha/Fe] uncertaintystat.error;phys.abunddoublenullableE(Bp-Rp)Colour excess in (BP-RP)magphot.color.excessdoublee_E(Bp-Rp)E(BP-RP) uncertaintymagstat.errordoubleAGExtinction in the G-bandmagphys.absorptiondoublee_AGAG uncertaintymagstat.errordoubleLum? Stellar luminositysolLumphys.luminositydoublenullablee_Lum? Luminosity uncertaintysolLumstat.errordoublenullableRad? Stellar radiussolRadphys.size.radiusdoublenullablee_Rad? Radius uncertaintysolRadstat.errordoublenullableMass? Stellar masssolMassphys.massdoublenullablee_Mass? Mass uncertaintysolMassstat.error;phys.massdoublenullableFlagParam[0/2] QF associated to the GSP-Spec parameters (1)meta.code.errorintFlagExt[0/2] QF associated to the extinction calculation (1)meta.code.errorintFlagLRM[0/9] QF associated to the L, R, and M derivation (1)meta.code.errorint_RAPositns from Gaia DR3 (right ascension part)degpos.eq.ra;meta.mainindexed_DEPositns from Gaia DR3 (declination part)degpos.eq.dec;meta.mainindexed