2023A&A...674A..28F

Query : 2023A&A...674A..28F

2023A&A...674A..28F - Astronomy and Astrophysics, volume 674A28 (2023/6-1)

Gaia Data Release 3 Apsis. II. Stellar parameters.

FOUESNEAU M., FREMAT Y., ANDRAE R., KORN A.J., SOUBIRAN C., KORDOPATIS G., VALLENARI A., HEITER U., CREEVEY O.L., SARRO L.M., DE LAVERNY P., LANZAFAME A.C., LOBEL A., SORDO R., RYBIZKI J., SLEZAK I., ALVAREZ M.A., DRIMMEL R., GARABATO D., DELCHAMBRE L., BAILER-JONES C.A.L., HATZIDIMITRIOU D., LORCA A., LE FUSTEC Y., PAILLER F., MARY N., ROBIN C., UTRILLA E., ABREU ARAMBURU A., BAKKER J., BELLAS-VELIDIS I., BIJAOUI A., BLOMME R., BOURET J.-C., BROUILLET N., BRUGALETTA E., BURLACU A., CARBALLO R., CASAMIQUELA L., CHAOUL L., CHIAVASSA A., CONTURSI G., COOPER W.J., DAFONTE C., DEMOUCHY C., DHARMAWARDENA T.E., GARCIA-LARIO P., GARCIA-TORRES M., GOMEZ A., GONZALEZ-SANTAMARIA I., JEAN-ANTOINE PICCOLO A., KONTIZAS M., LEBRETON Y., LICATA E.L., LINDSTROM H.E.P., LIVANOU E., MAGDALENO ROMEO A., MANTEIGA M., MAROCCO F., MARTAYAN C., MARSHALL D.J., NICOLAS C., ORDENOVIC C., PALICIO P.A., PALLAS-QUINTELA L., PICHON B., POGGIO E., RECIO-BLANCO A., RICLET F., SANTOVENA R., SCHULTHEIS M.S., SEGOL M., SILVELO A., SMART R.L., SUVEGES M., THEVENIN F., TORRALBA ELIPE G., ULLA A., VAN DILLEN E., ZHAO H. and ZOREC J.

Abstract (from CDS):

Context. The third Gaia data release (Gaia DR3) 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.
Aims. To provide insight into the physical properties of Milky Way stars, we used these data to produce a uniformly derived all-sky catalogue of stellar astrophysical parameters: atmospheric properties (Teff, log g, [M/H], [α/Fe], activity index, emission lines, and rotation), 13 chemical abundance estimates, evolution characteristics (radius, age, mass, and bolometric luminosity), distance, and dust extinction.
Methods. We developed the astrophysical parameter inference system (Apsis) pipeline to infer astrophysical parameters of Gaia objects by analysing their astrometry, photometry, BP/RP, and RVS spectra. We validate our results against those from other works in the literature, including benchmark stars, interferometry, and asteroseismology. Here we assess the stellar analysis performance from Apsis statistically.
Results. We describe the quantities we obtained, including the underlying assumptions and the limitations of our results. We provide guidance and identify regimes in which our parameters should and should not be used.
Conclusions. Despite some limitations, this is the most extensive catalogue of uniformly inferred stellar parameters to date. They comprise Teff, log g, 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 (half a million), activity indices (2 million), Hα equivalent widths (200 million), and further classifications of spectral types (220 million) and emission-line stars (50 thousand). More precise and detailed astrophysical parameters based on epoch BP, RP, and RVS spectrophotometry are planned for the next Gaia data release.

Abstract Copyright: © The Authors 2023

Journal keyword(s): stars: distances - stars: fundamental parameters - methods: statistical - Galaxy: stellar content - dust, extinction - catalogs

VizieR on-line data: <CDS Catalogue: I/355>

Simbad objects: 37

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Number of rows : 37
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 NAME THA MGr 00 00 -62.0           ~ 540 0
2 Cl Alessi 13 OpC 03 27 32.7 -35 50 45           ~ 92 0
3 NGC 1333 OpC 03 29 09.2 +31 20 59           ~ 1575 1
4 IC 348 OpC 03 44 31.1 +32 10 02           ~ 1476 1
5 Cl Melotte 22 OpC 03 46 38.0 +24 10 41           ~ 3679 0
6 Cl Melotte 25 OpC 04 30 27.4 +16 46 43           ~ 3309 0
7 HD 29355 * 04 37 26.0902253832 +00 34 28.683587064   8.05 7.50     F3/6 37 0
8 NAME Taurus Complex SFR 04 41.0 +25 52           ~ 4971 0
9 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
10 NAME 32 Ori group OpC 05 27 11 +06 16.0           ~ 84 0
11 NAME Orion Molecular Cloud MoC 05 56 -01.8           ~ 1227 1
12 NAME Columba Association As* 06 04 19.4 -22 20 40           ~ 337 0
13 NAME AB Dor Moving Group MGr 06 38 53.4 -42 50 04           ~ 540 0
14 Ass Vel OB 2 As* 08 09 22.478 -47 21 03.46           ~ 307 0
15 IC 2391 OpC 08 41 17.5 -53 03 00           ~ 871 0
16 NGC 2682 OpC 08 51 23.5 +11 48 54           ~ 2528 0
17 Cl Platais 8 OpC 09 06 04.4 -58 25 09           ~ 97 0
18 NAME Volans-Carina Association As* 09 37 00.0 -65 18 00           ~ 24 0
19 IC 2602 OpC 10 42 55.9 -64 25 22           ~ 735 0
20 NAME TW Hya Association As* 11 01.9 -34 42           ~ 1018 0
21 NAME Chamaeleon Region SFR 11 55 -78.0           ~ 887 0
22 NAME eps Cha Association OpC 11 59 51 -78 12.4           ~ 188 0
23 NAME Lower Centaurus Crux As* 12 19 -57.1           ~ 565 1
24 NAME Coma Dwarf Galaxy G 12 26 59.0 +23 54 15     14.1     ~ 482 1
25 NAME beta Pic Moving Group MGr 14 30 -42.0           ~ 894 0
26 NAME Upper Centaurus Lupus MGr 15 24 -41.9           ~ 567 1
27 NAME Upper Sco Association As* 16 12 -23.4           ~ 1586 1
28 NAME Ophiuchus Molecular Cloud SFR 16 28 06 -24 32.5           ~ 3969 1
29 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 16269 0
30 NAME Serpens Cloud SFR 18 29 49 +01 14.8           ~ 1195 1
31 NAME Corona Australis Cloud MoC 19 01 51 -36 58.9           ~ 554 0
32 NAME Cyg X Cld 20 30 04.7973633 +40 51 36.002197           ~ 962 1
33 NAME Octans Association As* ~ ~           ~ 101 0
34 NAME Carina Association As* ~ ~           ~ 188 1
35 NAME Local Bubble ISM ~ ~           ~ 1059 0
36 NAME Argus Association As* ~ ~           ~ 266 0
37 NAME Upper CrA As* ~ ~           ~ 22 0

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