RT journal article
T1 Gaia Data Release 3: A golden sample of astrophysical parameters
A1 Creveey, O. L.
A1 Sarro, L. M.
A1 Lobel, A.
A1 Pancino, E.
A1 Andrae, R.
A1 Berihuete Macías, Ángel
A2 Estadística e Investigación Operativa
K1 catalogs
K1 stars: fundamental parameters
K1 stars: early-type
K1 stars: low-mass
K1 Galaxy: stellar content
K1 Galaxy: kinematics and dynamics
AB Context.Gaia Data Release 3 (DR3) provides a wealth of new data products for the astronomical community to exploit, including astrophysical parameters for half a billion stars. In this work, we demonstrate the high quality of these data products and illustrate their use in different astrophysical contexts.Aims. We produce homogeneous samples of stars with high-quality astrophysical parameters by exploiting Gaia DR3, while focusing on many regimes across the Hertzsprung-Russell (HR) diagram; spectral types OBA, FGKM, and ultracool dwarfs (UCDs). We also focus on specific subsamples of particular interest to the community: solar analogues, carbon stars, and the Gaia spectrophotometric standard stars (SPSS).Methods. We query the astrophysical parameter tables along with other tables in Gaia DR3 to derive the samples of the stars of interest. We validate our results using the Gaia catalogue itself and by comparison with external data.Results. We produced six homogeneous samples of stars with high-quality astrophysical parameters across the HR diagram for the community to exploit. We first focus on three samples that span a large parameter space: young massive disc stars (OBA; about 3 Million), FGKM spectral type stars (about 3 Million), and UCDs (about 20 000). We provide these sources along with additional information (either a flag or complementary parameters) as tables that are made available in the Gaia archive. We also identify 15 740 bone fide carbon stars and 5863 solar analogues, and provide the first homogeneous set of stellar parameters of the SPSS sample. We demonstrate some applications of these samples in different astrophysical contexts. We use a subset of the OBA sample to illustrate its usefulness in analysing the Milky Way rotation curve. We then use the properties of the FGKM stars to analyse known exoplanet systems. We also analyse the ages of some unseen UCD-companions to the FGKM stars. We additionally predict the colours of the Sun in various passbands (Gaia, 2MASS, WISE) using the solar-analogue sample.Conclusions.Gaia DR3 contains a wealth of new high-quality astrophysical parameters for the community to exploit.
PB EDP Sciences
SN 0004-6361
YR 2023
FD 2023
LK http://hdl.handle.net/10498/32140
UL http://hdl.handle.net/10498/32140
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 11-nov-2026