Gaia Data Release 3: Astrophysical parameters inference system (Apsis) I -- methods and content overview
- Creators
- Creevey, O. L.
- Sordo, R.
- Pailler, F.
- Frémat, Y.
- Heiter, U.
- Thévenin, F.
- Andrae, R.
- Fouesneau, M.
- Lobel, A.
- Bailer-Jones, C. A. L.
- Garabato, D.
- Bellas-Velidis, I.
- Brugaletta, E.
- Lorca, A.
- Ordenovic, C.
- Palicio, P. A.
- Sarro, L. M.
- Delchambre, L.
- Drimmel, R.
- Rybizki, J.
- Torralba Elipe, G.
- Korn, A. J.
- Recio-Blanco, A.
- Schultheis, M. S.
- de Angeli, F.
- Montegriffo, P.
- Abreu Aramburu, A.
- Accart, S.
- Álvarez, M. A.
- Bakker, J.
- Brouillet, N.
- Burlacu, A.
- Carballo, R.
- Casamiquela, L.
- Chiavassa, Andrea
- Contursi, G.
- Cooper, W. J.
- Dafonte, C.
- Dapergolas, A.
- de Laverny, P.
- Dharmawardena, T. E.
- Edvardsson, B.
- Le Fustec, Y.
- García-Lario, P.
- García-Torres, M.
- Gomez, A.
- González-Santamaría, I.
- Hatzidimitriou, D.
- Jean-Antoine Piccolo, A.
- Kontizas, M.
- Kordopatis, G.
- Lanzafame, A. C.
- Lebreton, Y.
- Licata, E. L.
- Lindstrøm, H. E. P.
- Livanou, E.
- Magdaleno Romeo, A.
- Manteiga, M.
- Marocco, F.
- Marshall, D. J.
- Mary, N.
- Nicolas, C.
- Pallas-Quintela, L.
- Panem, C.
- Pichon, B.
- Poggio, E.
- Riclet, F.
- Robin, C.
- Santoveña, R.
- Silvelo, A.
- Slezak, I.
- Smart, R. L.
- Soubiran, C.
- Süveges, M.
- Ulla, A.
- Utrilla, E.
- Vallenari, A.
- Zhao, H.
- Zorec, J.
- Barrado, D.
- Bijaoui, A.
- Bouret, J.-C.
- Blomme, R.
- Brott, I.
- Cassisi, S.
- Kochukhov, O.
- Martayan, C.
- Shulyak, D.
- Silvester, J.
- Others:
- Joseph Louis LAGRANGE (LAGRANGE) ; Université Nice Sophia Antipolis (1965 - 2019) (UNS) ; COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de la Côte d'Azur ; COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS)
- INAF - Osservatorio Astronomico di Padova (OAPD) ; Istituto Nazionale di Astrofisica (INAF)
- Centre National d'Études Spatiales [Toulouse] (CNES)
- Royal Observatory of Belgium [Brussels] (ROB)
- Uppsala University
- Max Planck Institute for Astronomy (MPIA)
- Max-Planck Institute for Astronomy, Konigstuhl 17, D-69117, Heidelberg, Germany
- Universidade da Coruña
- National Observatory of Athens (NOA)
- Observatoire de la Côte d'Azur (OCA) ; Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)
- Universidad Nacional de Educación a Distancia (UNED)
- INAF - Osservatorio Astrofisico di Torino (OATo) ; Istituto Nazionale di Astrofisica (INAF)
- Department of Astronomy and Space Physics [Uppsala] ; Uppsala University
- Institute of Astronomy [Cambridge] ; University of Cambridge [UK] (CAM)
- INAF - Osservatorio Astronomico di Bologna (OABO) ; Istituto Nazionale di Astrofisica (INAF)
- European Space Astronomy Centre (ESAC) ; European Space Agency (ESA)
- Conservation Ecology, Groningen Institute for Evolutionary Life Sciences (GELIFES), University of Groningen, Groningen, The Netherlands
- FEMIS 2021 ; Laboratoire d'Astrophysique de Bordeaux [Pessac] (LAB) ; Université de Bordeaux (UB)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Bordeaux (UB)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)
Description
Gaia Data Release 3 contains a wealth of new data products for the community. Astrophysical parameters are a major component of this release. They were produced by the Astrophysical parameters inference system (Apsis) within the Gaia Data Processing and Analysis Consortium. The aim of this paper is to describe the overall content of the astrophysical parameters in Gaia Data Release 3 and how they were produced. In Apsis we use the mean BP/RP and mean RVS spectra along with astrometry and photometry, and we derive the following parameters: source classification and probabilities for 1.6 billion objects, interstellar medium characterisation and distances for up to 470 million sources, including a 2D total Galactic extinction map, 6 million redshifts of quasar candidates and 1.4 million redshifts of galaxy candidates, along with an analysis of 50 million outlier sources through an unsupervised classification. The astrophysical parameters also include many stellar spectroscopic and evolutionary parameters for up to 470 million sources. 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 (up to 5 million), diffuse interstellar band analysis (0.5 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). This catalogue is the most extensive homogeneous database of astrophysical parameters to date, and it is based uniquely on Gaia data.
Abstract
International audience
Additional details
- URL
- https://hal.archives-ouvertes.fr/hal-03857364
- URN
- urn:oai:HAL:hal-03857364v1
- Origin repository
- UNICA