J/A+A/691/A182ivo://CDS.VizieR/J/A+A/691/A182doi:10.26093/cds/vizier.36910182CDSde Laverny P.Recio-Blanco A.Aerts C.Palicio P.A.2025-02-18T20:01:55Z2024-11-13T07:47:43ZCDS support team

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

cds-question@unistra.frearly-type-starsvariable-starseffective-temperaturechemical-abundancesvisible-astronomyThe third Data Release of the ESA Gaia mission has provided a large sample of new gravity-mode pulsators, among which more than 11600 are {gamma} Dor stars. The goal of the present work is to present the spectroscopic parameters of these {gamma} Dor pulsators estimated by the GSP-Spec module that analysed millions of Gaia spectra. Such a parametrisation could help confirm their {gamma} Dor nature and provide their chemo- physical properties. The Galactic positions, kinematics, and orbital properties of these new Gaia pulsators were examined in order to define a sub-sample belonging to the Milky Way thin disc, in which these young stars should preferentially be found. The stellar luminosities, radii, and astrometric surface gravities were estimated without adopting any priors from uncertain stellar evolution models. These parameters, combined with the GSP-Spec effective temperatures, spectroscopic gravities, and metallicities were then validated by comparison with recent literature studies. Most stars are found to belong to the Galactic thin disc, as expected. It is also found that the derived luminosities, radii, and astrometric surface gravities are high quality and have values typical of genuine {gamma} Dor pulsators. Moreover, we show that Teff and [M/H] of pulsators with high enough S/N spectra or slow to moderate rotation rates are robust. This allowed to define a sub-sample of genuine slow-rotating Gaia {gamma} Dor pulsators. Their Teff were found to be between ~6500 and ~7800K, log(g) is around 4.2, and the luminosities and stellar radii peak at ~5L_{sun}_ and ~1.7R_{sun}_. The median metallicity is close to the Solar value, although {gamma} Dor with higher and lower metallicities by about +/-0.5dex were also identified. The [{alpha}/Fe] content is fully consistent with the chemical properties of the Galactic disc. Gaia/DR3 spectroscopic properties of {gamma} Dor stars therefore confirm the nature of these pulsators and allow to chemo-physically parametrise a new large sample of such stars. Moreover, future Gaia data releases should drastically increase the number of {gamma} Dor stars with parameters spectroscopically derived with good precision.2024A&A...691A.182Dhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/691/A182CatalogResearchIsServedByTAP 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/691/A182https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/691/A182http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/691/A182https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/691/A182https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/691/A182http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/691/A182GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/691/A182/table (Parameters of HQ Dor stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/691/A182/table?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/691/A182/table?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/691/A182/table?GETtext/xml+votable180.050000true75.486865665.82237060.0055555555555555566/1868 2783 2811 2998 3018 3428 7127 7389 8067 8280 9301 9544 9600 9990 11481 12996 13010 13041 13136 13153 13242 13287 13622 13677 13980 14071 14088 14193 14230 14382 14475 14585 14600 14633 14722 14949 15220 15376 15906 16363 17520 18977 19466 20781 20791 20927 20929 21652 21798 22882 23339 24476 24519 24704 26366 29222 30191 31930 32153 32161 32277 32372 32608 34800 36032 37305 37363 37494 37650 37704 37763 37766 37788 37831 37899 37944 37975 37998 38002-38003 38049 38053 38086 38148 38184 38448 38463 38507 38512 38559 38611 39009 39153 39220 39223 39282 39292 39331 39351 39377 39385 39753 39787 39800 39808 39838 39871 39902 39916 39920 39926 39978 39982 40052 40105 40114 40467 40552 40568 40578 40862 41201 41231 41294 41348 41354 41359-41360 41366 41383 41649 41688 41873 41888 41894 41992 42031 42212 42270 43055 43293 43530 43716 45474 45533 45640 47265 48281https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/691/A182?format=asciiOpticaldefaultJ/A+A/691/A182/tableParameters of HQ Dor starse_TeffEffective temperature uncertaintyKstat.error;phys.temperature.effectivefloatloggStellar surface gravity in log scalelog(cm.s**-2)instr.scaledoublee_loggStellar surface gravity uncertaintylog(cm.s**-2)stat.errordoubleMet? Stellar mean metallicityphys.abunddoublenullablee_Met? Stellar mean metallicity uncertaintystat.errordoublenullable[a/Fe]? Abundances ratio [alpha/Fe]phys.abunddoublenullablee_[a/Fe]? Abundances ratio [alpha/Fe] uncertaintystat.error;phys.abunddoublenullableL? Stellar luminositysolLumphys.luminositydoublenullablee_L? Stellar luminosity uncertaintysolLumstat.errordoublenullableR? Stellar radiussolRadphys.size.radiusdoublenullablee_R? Stellar radius uncertaintysolRadstat.errordoublenullableTD[1]? Thin disc membership (Yes = 1)meta.code.memberintnullable_RAPositions from Gaia DR3 (right ascension part)degpos.eq.ra;meta.main_DEPositions from Gaia DR3 (declination part)degpos.eq.dec;meta.mainrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGaiaDR3Star Name (Gaia DR3 Id)meta.id;meta.mainTeffEffective temperatureKphys.temperature.effectivefloat