بيانات النشر: Uppsala universitet, Observationell astrofysik
Uppsala universitet, Teoretisk astrofysik
Univ Cote Azur, Observ Cote Azur, CNRS, Lab Lagrange, Bd Observ,CS 34229, F-06304 Nice 4, France.
INAF Osservatorio Astron Padova, Vicolo Osservatorio 5, I-35122 Padua, Italy.
CNES Ctr Spatial Toulouse, 18 Ave Edouard Belin, F-31401 Toulouse 9, France.
Royal Observ Belgium, Ringlaan 3, B-1180 Brussels, Belgium.
Max Planck Inst Astron, Konigstuhl 17, D-69117 Heidelberg, Germany.
Univ A Coruna, CIGUS CITIC, Dept Comp Sci & Informat Technol, Campus Elvina S-N, La Coruna 15071, Spain.
Natl Observ Athens, 1 Metaxa & Vas Pavlou,Palaia Penteli, Athens 15236, Greece.
INAF Osservatorio Astrofis Catania, Via S Sofia 78, I-95123 Catania, Italy.
Aurora Technol European Space Agcy ESA, Camino Bajo Castillo S-N, Madrid 28692, Spain.
UNED, Dept Inteligencia Artificial, C Juan Rosal 16, Madrid 28040, Spain.
Univ Liege, Inst Astrophys & Geophys, 19C,Allee 6 Aout, B-4000 Liege, Belgium.
INAF Osservatorio Astrofis Torino, Via Osservatorio 20, I-10025 Pino Torinese, TO, Italy.
Univ Cambridge, Inst Astron, Madingley Rd, Cambridge CB3 0HA, England.
INAF Osservatorio Astrofis & Sci Spazio Bologna, Via Piero Gobetti 93-3, I-40129 Bologna, Italy.
ATG Europe European Space Agcy ESA, Camino Bajo Castillo,S-N, Madrid 28692, Spain.
European Space Agcy ESA, European Space Astron Ctr ESAC, Camino Bajo Castillo,S-N, Madrid 28692, Spain.
Univ Bordeaux, Lab Astrophys Bordeaux, CNRS, B18N,Allee Geoffroy St Hilaire, F-33615 Pessac, France.
Telespazio CNES Ctr Spatial Toulouse, 18 Ave Edouard Belin, F-31401 Toulouse 9, France.
Univ Cantabria, Dept Matemat Aplicada & Ciencias Computac, ETS Ingenieros Caminos Canales & Puertos, Ave Castros S-N, Santander 39005, Spain.
Univ Bordeaux, Lab Astrophys Bordeaux, CNRS, B18N,Allee Geoffroy St Hilaire, F-33615 Pessac, France.;Univ PSL, CNRS, GEPI, Observ Paris, 5 Pl Jules Janssen, F-92190 Meudon, France.
INAF Osservatorio Astrofis Torino, Via Osservatorio 20, I-10025 Pino Torinese, TO, Italy.;Univ Hertfordshire, Ctr Astrophys Res, Coll Lane, Hatfield AL10 9AB, Herts, England.
Uppsala Univ, Theoret Astrophys, Div Astron & Space Phys, Dept Phys & Astron, Box 516, S-75120 Uppsala, Sweden.
Univ Pablo de Olavide, Data Sci & Big Data Lab, Seville 41013, Spain.
Natl & Kapodistrian Univ Athens, Dept Astrophys Astron & Mech, Athens 15783, Greece.
INAF Osservatorio Astrofis Catania, Via S Sofia 78, I-95123 Catania, Italy.;Univ Catania, Dipartimento Fis & Astron Ettore Majorana, Via S Sofia 64, I-95123 Catania, Italy.
Univ Paris, Sorbonne Univ, Univ PSL, CNRS,LESIA,Observ Paris, 5 Pl Jules Janssen, F-92190 Meudon, France.;Univ Rennes, CNRS, IPR Inst Phys Rennes, UMR 6251, F-35000 Rennes, France.
INAF Osservatorio Astrofis Torino, Via Osservatorio 20, I-10025 Pino Torinese, TO, Italy.;Univ Copenhagen, Niels Bohr Inst, Juliane Maries Vej 30, DK-2100 Copenhagen O, Denmark.;DXC Technol, Retortvej 8, DK-2500 Valby, Denmark.
Univ A Coruna, Dept Naut Sci & Marine Engn, CIGUS CITIC, Paseo Ronda 51, La Coruna 15071, Spain.
CALTECH, IPAC, Mail Code 100-22, Pasadena, CA 10022 USA.
Univ Toulouse, CNRS, IRAP, UPS, 9Ave Colonel Roche,BP 44346, F-31028 Toulouse 4, France.
CNES Ctr Spatial Toulouse, Thales Serv, 18 Ave Edouard Belin, F-31401 Toulouse 9, France.
Univ Cote Azur, Observ Cote Azur, CNRS, Lab Lagrange, Bd Observ,CS 34229, F-06304 Nice 4, France.;INAF Osservatorio Astrofis Torino, Via Osservatorio 20, I-10025 Pino Torinese, TO, Italy.
Univ Geneva, Inst Global Hlth, Geneva, Switzerland.
Univ Vigo, Dept Appl Phys, Vigo 36310, Spain.
Sorbonne Univ, Inst Astrophys Paris, CNRS, UMR7095, 98 Bis Bd Arago, F-75014 Paris, France.
CSIC, Ctr Astrobiol, INTA, Dept Astrofis,ESA ESAC, Camino Bajo Castillo S-N, Madrid 28692, Spain.
Univ Cote Azur, Observ Cote Azur, CNRS, Lab Lagrange, Bd Observ,CS 34229, F-06304 Nice 4, France.;CSIC, Ctr Astrobiol, INTA, Dept Astrofis,ESA ESAC, Camino Bajo Castillo S-N, Madrid 28692, Spain.
Hamburger Sternwarte, Gojenbergsweg 112, D-21029 Hamburg, Germany.
INAF Osservatorio Astron Abruzzo, Via M Maggini,S-N, I-64100 Teramo, Italy.;INFN Sez Pisa, Largo Pontecorvo 3, I-56127 Pisa, Italy.
European Org Astron Res Southern Hemisphere, Alonso Cordova 3107, Santiago 19001, Chile.
Georg August Univ, Inst Astrophys, D-37077 Gottingen, Germany.;CSIC, Inst Astrofis Andalucia, Granada 18008, Spain.
APAVE SUDEUROPE SAS, CNES Ctr Spatial Toulouse, 18 Ave Edouard Belin, F-31401 Toulouse 9, France.
نبذة مختصرة : Gaia Data Release 3 contains a wealth of new data products for the community. Astrophysical parameters are a major component of this release, and were produced by the Astrophysical parameters inference system (Apsis) within the Gaia Data Processing and Analysis Consortium (DPAC). The aim of this paper is to describe the overall content of the astrophysical parameters in Gaia DR3 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; 1.4 million redshifts of galaxy candidates; and 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 T-eff, 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 (up to 5 million), diffuse interstellar band analysis (0.5 million), activity indices (2 million), H ff equivalent widths (200 million), and further classification of spectral types (220 million) and emission-line stars (50 000). This paper is the first in a series of three papers, and focusses on describing the global content of the parameters in Gaia DR3. The accompanying Papers II and III focus on the validation and use of the stellar and non-stellar products, respectively. This catalogue is the most extensive homogeneous database of astrophysical parameters to date, and is based uniquely on Gaia data. It will only be superseded by Gaia Data Release 4, and will therefore remain a key reference over the next four years, providing astrophysical parameters independent of other ground- and space-based data.
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