Gaia Data Release 3. A golden sample of astrophysical parameters

O. L. Creevey,, Sarro, L. M., Lobel, A., Pancino, E. y Sarro Baro, Luis Manuel . (2023) Gaia Data Release 3. A golden sample of astrophysical parameters. Astronomy & Astrophysics

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Título Gaia Data Release 3. A golden sample of astrophysical parameters
Autor(es) O. L. Creevey,
Sarro, L. M.
Lobel, A.
Pancino, E.
Sarro Baro, Luis Manuel
Materia(s) Ingeniería Informática
Abstract 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.
Palabras clave catalogs
stars: fundamental parameters
stars: early-type
stars: low-mass
Galaxy: stellar content
Galaxy: kinematics and dynamics
Editor(es) EDP Sciences
Fecha 2023-06-16
Formato application/pdf
Identificador bibliuned:95-Lmsarro-0005
DOI - identifier
ISSN - identifier 1432-0746
Nombre de la revista Astronomy & Astrophysics
Número de Volumen 674
Número de Issue A38
Publicado en la Revista Astronomy & Astrophysics
Idioma eng
Versión de la publicación publishedVersion
Tipo de recurso Article
Derechos de acceso y licencia
Tipo de acceso Acceso abierto
Notas adicionales La versión registrada de este artículo, publicado por primera vez en Astronomy & Astrophysics (A&A) (2023) 674 A39, está disponible en línea en el sitio web del editor: Astronomy & Astrophysics;
Notas adicionales The registered version of this paper, first published in Astronomy & Astrophysics (A&A) (2023) 674 A39, is available online at the publisher's website: Astronomy & Astrophysics;

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Creado: Mon, 19 Feb 2024, 21:51:42 CET