Gaia Data Release 3: Apsis II -- Stellar Parameters
M. Fouesneau
(1)
,
Y. Frémat
(2)
,
R. Andrae
(3)
,
A.J. Korn
,
C. Soubiran
(4)
,
G. Kordopatis
(5)
,
A. Vallenari
(6)
,
U. Heiter
(7)
,
O.L. Creevey
,
L.M. Sarro
,
P. de Laverny
(5)
,
A.C. Lanzafame
,
A. Lobel
(2)
,
R. Sordo
(6)
,
J. Rybizki
,
I. Slezak
(5)
,
M.A. Alvarez
,
R. Drimmel
(8)
,
D. Garabato
(9)
,
Y. Lebreton
(10, 11)
,
J.-C. Bouret
(12)
1
Max-Planck Institute for Astronomy, Konigstuhl 17, D-69117, Heidelberg, Germany
2 ROB - Royal Observatory of Belgium = Observatoire Royal de Belgique
3 MPIA - Max Planck Institute for Astronomy
4 LAB - Laboratoire d'Astrophysique de Bordeaux [Pessac]
5 LAGRANGE - Joseph Louis LAGRANGE
6 OAPD - INAF - Osservatorio Astronomico di Padova
7 Uppsala University
8 OATo - INAF - Osservatorio Astrofisico di Torino
9 Universidade da Coruña
10 LESIA - Laboratoire d'études spatiales et d'instrumentation en astrophysique = Laboratory of Space Studies and Instrumentation in Astrophysics
11 IPR - Institut de Physique de Rennes
12 LAM - Laboratoire d'Astrophysique de Marseille
2 ROB - Royal Observatory of Belgium = Observatoire Royal de Belgique
3 MPIA - Max Planck Institute for Astronomy
4 LAB - Laboratoire d'Astrophysique de Bordeaux [Pessac]
5 LAGRANGE - Joseph Louis LAGRANGE
6 OAPD - INAF - Osservatorio Astronomico di Padova
7 Uppsala University
8 OATo - INAF - Osservatorio Astrofisico di Torino
9 Universidade da Coruña
10 LESIA - Laboratoire d'études spatiales et d'instrumentation en astrophysique = Laboratory of Space Studies and Instrumentation in Astrophysics
11 IPR - Institut de Physique de Rennes
12 LAM - Laboratoire d'Astrophysique de Marseille
A.J. Korn
- Fonction : Auteur
O.L. Creevey
- Fonction : Auteur
L.M. Sarro
- Fonction : Auteur
A.C. Lanzafame
- Fonction : Auteur
J. Rybizki
- Fonction : Auteur
M.A. Alvarez
- Fonction : Auteur
Y. Lebreton
- Fonction : Auteur
- PersonId : 639
- IdHAL : yveline-lebreton
- ORCID : 0000-0002-4834-2144
- IdRef : 031275656
J.-C. Bouret
- Fonction : Auteur
- PersonId : 756675
- ORCID : 0000-0003-4946-2591
Résumé
The third Gaia data release contains, beyond the astrometry and photometry, dispersed light for hundreds of millions of sources from the Gaia prism spectra (BP and RP) and the spectrograph (RVS). This data release opens a new window on the chemo-dynamical properties of stars in our Galaxy, essential knowledge for understanding the structure, formation, and evolution of the Milky Way. To provide insight into the physical properties of Milky Way stars, we used these data to produce a uniformly-derived, all-sky catalog of stellar astrophysical parameters (APs): Teff, logg, [M/H], [$\alpha$/Fe], activity index, emission lines, rotation, 13 chemical abundance estimates, radius, age, mass, bolometric luminosity, distance, and dust extinction. We developed the Apsis pipeline to infer APs of Gaia objects by analyzing their astrometry, photometry, BP/RP, and RVS spectra. We validate our results against other literature works, including benchmark stars, interferometry, and asteroseismology. Here we assessed the stellar analysis performance from Apsis statistically. We describe the quantities we obtained, including our results' underlying assumptions and limitations. We provide guidance and identify regimes in which our parameters should and should not be used. Despite some limitations, this is the most extensive catalog of uniformly-inferred stellar parameters to date. These comprise Teff, logg, and [M/H] (470 million using BP/RP, 6 million using RVS), radius (470 million), mass (140 million), age (120 million), chemical abundances (5 million), diffuse interstellar band analysis (1/2 million), activity indices (2 million), H{$\alpha$} equivalent widths (200 million), and further classification of spectral types (220 million) and emission-line stars (50 thousand). More precise and detailed astrophysical parameters based on epoch BP, RP, and RVS are planned for the next Gaia data release.
Domaines
Astrophysique [astro-ph]Format du dépôt | Fichier |
---|---|
Type de dépôt | Article dans une revue |
Titre |
en
Gaia Data Release 3: Apsis II -- Stellar Parameters
|
Résumé |
en
The third Gaia data release contains, beyond the astrometry and photometry, dispersed light for hundreds of millions of sources from the Gaia prism spectra (BP and RP) and the spectrograph (RVS). This data release opens a new window on the chemo-dynamical properties of stars in our Galaxy, essential knowledge for understanding the structure, formation, and evolution of the Milky Way. To provide insight into the physical properties of Milky Way stars, we used these data to produce a uniformly-derived, all-sky catalog of stellar astrophysical parameters (APs): Teff, logg, [M/H], [$\alpha$/Fe], activity index, emission lines, rotation, 13 chemical abundance estimates, radius, age, mass, bolometric luminosity, distance, and dust extinction. We developed the Apsis pipeline to infer APs of Gaia objects by analyzing their astrometry, photometry, BP/RP, and RVS spectra. We validate our results against other literature works, including benchmark stars, interferometry, and asteroseismology. Here we assessed the stellar analysis performance from Apsis statistically. We describe the quantities we obtained, including our results' underlying assumptions and limitations. We provide guidance and identify regimes in which our parameters should and should not be used. Despite some limitations, this is the most extensive catalog of uniformly-inferred stellar parameters to date. These comprise Teff, logg, and [M/H] (470 million using BP/RP, 6 million using RVS), radius (470 million), mass (140 million), age (120 million), chemical abundances (5 million), diffuse interstellar band analysis (1/2 million), activity indices (2 million), H{$\alpha$} equivalent widths (200 million), and further classification of spectral types (220 million) and emission-line stars (50 thousand). More precise and detailed astrophysical parameters based on epoch BP, RP, and RVS are planned for the next Gaia data release.
|
Auteur(s) |
M. Fouesneau
1
, Y. Frémat
2
, R. Andrae
3
, A.J. Korn
, C. Soubiran
4
, G. Kordopatis
5
, A. Vallenari
6
, U. Heiter
7
, O.L. Creevey
, L.M. Sarro
, P. de Laverny
5
, A.C. Lanzafame
, A. Lobel
2
, R. Sordo
6
, J. Rybizki
, I. Slezak
5
, M.A. Alvarez
, R. Drimmel
8
, D. Garabato
9
, Y. Lebreton
10, 11
, J.-C. Bouret
12
1
Max-Planck Institute for Astronomy, Konigstuhl 17, D-69117, Heidelberg, Germany
( 1121155 )
- Max-Planck Institute for Astronomy, Konigstuhl 17, D-69117, Heidelberg, Germany
- Allemagne
2
ROB -
Royal Observatory of Belgium = Observatoire Royal de Belgique
( 90018 )
- Ringlaan 3 1180 Brussels
- Belgique
3
MPIA -
Max Planck Institute for Astronomy
( 545951 )
- Königstuhl 17, 69117 Heidelberg
- Allemagne
4
LAB -
Laboratoire d'Astrophysique de Bordeaux [Pessac]
( 29442 )
- Bât B18N - Allée Geoffroy Saint Hilaire
CS 50023 - 33615 Pessac Cedex France
- France
5
LAGRANGE -
Joseph Louis LAGRANGE
( 179867 )
- Boulevard de l'Observatoire B.P. 4229 06304 Nice Cedex 04 - France
- France
6
OAPD -
INAF - Osservatorio Astronomico di Padova
( 485960 )
- Vicolo dell'Osservatorio, 5, 35122 Padova
- Italie
7
Uppsala University
( 50873 )
- Box 256, SE-751 05 Uppsala
- Suède
8
OATo -
INAF - Osservatorio Astrofisico di Torino
( 485964 )
- Strada Osservatorio 20, 10025, Pino Torinese (To)
- Italie
9
Universidade da Coruña
( 38325 )
- Rúa da Maestranza 9, 15001 A Coruña
- Espagne
10
LESIA -
Laboratoire d'études spatiales et d'instrumentation en astrophysique = Laboratory of Space Studies and Instrumentation in Astrophysics
( 1005025 )
- 5, place Jules Janssen 92190 MEUDON
- France
11
IPR -
Institut de Physique de Rennes
( 57111 )
- Bâtiment 11A , B, C, E – 10B
263 av. Général Leclerc
35042 Rennes cedex FRANCE
- France
12
LAM -
Laboratoire d'Astrophysique de Marseille
( 179944 )
- Pôle de l'Étoile Site de Château-Gombert 38, rue Frédéric Joliot-Curie 13388 Marseille cedex 13
- France
|
Vulgarisation |
Non
|
Comité de lecture |
Oui
|
Audience |
Internationale
|
Langue du document |
Anglais
|
Licence |
Paternité
|
Nom de la revue |
|
Date de publication |
2023-06
|
Volume |
674
|
Page/Identifiant |
A28
|
Domaine(s) |
|
Mots-clés |
en
Astrophysics - Solar and Stellar Astrophysics, Astrophysics - Astrophysics of Galaxies
|
arXiv Id | 2206.05992 |
ADS Id | 2022arXiv220605992F |
DOI | 10.1051/0004-6361/202243919 |
Origine :
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