期刊
ASTRONOMY & ASTROPHYSICS
卷 649, 期 -, 页码 -出版社
EDP SCIENCES S A
DOI: 10.1051/0004-6361/202039657
关键词
catalogs; astrometry; parallaxes; proper motions; techniques; photometric; techniques: radial velocities
资金
- Algerian Centre de Recherche en Astronomie, Astrophysique et Geophysique of Bouzareah Observatory
- Austrian Fonds zur Forderung der wissenschaftlichen Forschung (FWF) Hertha Firnberg Programme [T359, P20046, P23737]
- BELgian federal Science Policy Office (BELSPO) through various PROgramme de Developpement d'Experiences scientifiques (PRODEX) grants
- Polish Academy of Sciences - Fonds Wetenschappelijk Onderzoek [VS.091.16N]
- Fonds de la Recherche Scientifique (FNRS)
- Fundacao de Amparo a Pesquisa do Estado de SAo Paulo (FAPESP)
- CoordenacAo de Aperfeicoamento de Pessoal de Nivel Superior (CAPES) - Comite Francais d'Evaluation de la Cooperation Universitaire et Scientifique avec le Bresil (COFECUB)
- National Science Foundation of China (NSFC) [11573054, 11703065]
- China Scholarship Council [201806040200]
- Tenure Track Pilot Programme of the Croatian Science Foundation
- Ecole Polytechnique Federale de Lausanne
- Mining the Variable Sky [TTP-2018-07-1171]
- Czech-Republic Ministry of Education, Youth, and Sports [LG 15010]
- INTER-EXCELLENCE grant [LTAUSA18093]
- Czech Space Office through ESA PECS [98058]
- Danish Ministry of Science
- Estonian Ministry of Education and Research [IUT40-1]
- European Commission's Sixth Framework Programme through the European Leadership in Space Astrometry
- Marie Curie Research Training Network, through Marie Curie project [MRTN-CT-2006-033481, PIOF-GA-2009-255267]
- Marie Curie Transfer-of-Knowledge (ToK) fellowship [MTKD-CT-2004-014188]
- European Commission [FP7-606740, 264895]
- European Research Council (ERC) [320360, 647208]
- European Union [745617, 670519, 687378, 682115, 695099]
- European Science Foundation (ESF)
- European Space Agency (ESA) [C98090, 4000106398/12/NL/KML, 4000115263/15/NL/IB]
- Academy of Finland
- Magnus Ehrnrooth Foundation
- French Centre National d'Etudes Spatiales (CNES)
- Agence Nationale de la Recherche (ANR) [ANR-10-IDEX-0001-02, ANR-15-CE31-0007, ANR-14-CE33-0014-01, ANR-15-CE31-0012-01]
- Centre National de la Recherche Scientifique (CNRS)
- SNO Gaia of the Institut des Sciences de l'Univers (INSU)
- Action Federatrice Gaia of the Observatoire de Paris
- Region de Franche-Comte
- Programme National de Gravitation, References, Astronomie, et Metrologie (GRAM) of CNRS/INSU
- Institut National Polytechnique (INP)
- Institut National de Physique nucleaire et de Physique des Particules (IN2P3)
- CNES
- German Aerospace Agency (Deutsches Zentrum fur Luft- und Raumfahrt e.V., DLR) [50QG0501, 50QG0601, 50QG0602, 50QG0701, 50QG0901, 50QG1001, 50QG1101, 50QG1401, 50QG1402, 50QG1403, 50QG1404, 50QG1904]
- Hungarian Academy of Sciences [LP2014-17, LP2018-7]
- Premium Postdoctoral Research Programme
- Hungarian National Research, Development, and Innovation Office (NKFIH) [KH_18-130405]
- Science Foundation Ireland (SFI) through a Royal Society - SFI University Research Fellowship
- Israel Science Foundation (ISF) [848/16]
- Agenzia Spaziale Italiana (ASI) [I/037/08/0, I/058/10/0, 2014-025-R.0, 2014-025-R.1.2015, 2018-24-HH.0, 2014-049-R.0/1/2, I/008/10/0, 2013/030/I.0, 2013-030-I.0.1-2015, 2016-17-I.0]
- INAF
- Italian Ministry of Education, University, and Research (Ministero dell'Istruzione, dell'Universita e della Ricerca) through the Premiale project MIning The Cosmos Big Data and Innovative Italian Technology for Frontier Astrophysics and Cosmology (MITiC)
- Netherlands Organisation for Scientific Research (NWO) [NWO-M-614.061.414]
- VICI grant
- Spinoza prize
- Netherlands Research School for Astronomy (NOVA)
- Polish National Science Centre through HARMONIA [2018/06/M/ST9/00311]
- DAINA [2017/27/L/ST9/03221]
- PRELUDIUM [2017/25/N/ST9/01253]
- Ministry of Science and Higher Education (MNiSW) [DIR/WK/2018/12]
- Portugese FundacAo para a Ciencia e a Tecnologia (FCT) [SFRH/BPD/74697/2010, SFRH/BD/128840/2017]
- Strategic Programme for CENTRA [UID/FIS/00099/2019]
- Slovenian Research Agency [P1-0188]
- Spanish Ministry of Economy (MINECO/FEDER, UE) [ESP2016-80079-C2-1-R, ESP2016-80079-C2-2-R, RTI2018-095076-B-C21, RTI2018-095076-B-C22, BES-2016-078499, BES-2017-083126]
- Juan de la Cierva formacion [FJCI-2015-2671]
- Spanish Ministry of Education, Culture, and Sports [FPU16/03827]
- Spanish Ministry of Science and Innovation (MICINN) [AYA2017-89841P, TIN2015-65316-P]
- Severo Ochoa Centre of Excellence Programme of the Spanish Government [SEV2015-0493]
- Institute of Cosmos Sciences University of Barcelona (ICCUB, Unidad de Excelencia Maria de Maeztu) [MDM-2014-0369, CEX2019-000918-M]
- University of Barcelona's official doctoral programme for the development of an R+D+i project through an Ajuts de Personal Investigador en Formacio (APIF) grant
- Spanish Virtual Observatory [AyA2017-84089]
- Galician Regional Government, Xunta de Galicia [ED431B-2018/42, ED481A-2019/155]
- Centro de Investigacion en Tecnologias de la Informacion y las Comunicaciones (CITIC) - Xunta de Galicia
- Xunta de Galicia
- Centros Singulares de Investigacion de Galicia for the period 2016-2019 through CITIC
- European Union through the European Regional Development Fund (ERDF) / Fondo Europeo de Desenvolvemento Rexional (FEDER) for the Galicia 2014-2020 Programme [ED431G-2019/01]
- Red Espanola de Supercomputacion (RES) computer resources at MareNostrum
- Barcelona Supercomputing Centre - Centro Nacional de Supercomputacion (BSC-CNS) [AECT-2016-1-0006, AECT-2016-2-0013, AECT-2016-3-0011, AECT-2017-1-0020]
- Departament d'Innovacio, Universitats i Empresa de la Generalitat de Catalunya [2014-SGR-1051]
- Ramon y Cajal Fellowship [RYC2018-025968-I]
- Swedish National Space Agency (SNSA/Rymdstyrelsen)
- Swiss State Secretariat for Education, Research, and Innovation through the Mesures d'Accompagnement
- Swiss Activites Nationales Complementaires
- Swiss National Science Foundation
- United Kingdom Particle Physics and Astronomy Research Council (PPARC)
- United Kingdom Science and Technology Facilities Council (STFC)
- United Kingdom Space Agency (UKSA) [PP/D006511/1, PP/D006546/1, PP/D006570/1, ST/I000852/1, ST/J005045/1, ST/K00056X/1, ST/K000209/1, ST/K000756/1, ST/L006561/1, ST/N000595/1]
- The United Kingdom Space Agency (UKSA) [ST/N000641/1, ST/N000978/1, ST/N001117/1, ST/S000089/1, ST/S000976/1, ST/S001123/1, ST/S001948/1, ST/S002103/1, ST/V000969/1]
- Agence Nationale de la Recherche (ANR) [ANR-14-CE33-0014, ANR-15-CE31-0012] Funding Source: Agence Nationale de la Recherche (ANR)
- Fundação para a Ciência e a Tecnologia [SFRH/BD/128840/2017] Funding Source: FCT
- Marie Curie Actions (MSCA) [745617] Funding Source: Marie Curie Actions (MSCA)
Gaia EDR3 is the early installment of the third data release from the Gaia project, providing astrometry and photometry for 1.8 billion sources brighter than magnitude 21, along with radial velocities from Gaia DR2. The data processing precision and homogeneity have significantly improved compared to the previous version, with additional information on celestial bodies and an updated celestial reference frame.
Context. We present the early installment of the third Gaia data release, Gaia EDR3, consisting of astrometry and photometry for 1.8 billion sources brighter than magnitude 21, complemented with the list of radial velocities from Gaia DR2. Aims. A summary of the contents of Gaia EDR3 is presented, accompanied by a discussion on the differences with respect to Gaia DR2 and an overview of the main limitations which are present in the survey. Recommendations are made on the responsible use of Gaia EDR3 results. Methods. The raw data collected with the Gaia instruments during the first 34 months of the mission have been processed by the Gaia Data Processing and Analysis Consortium and turned into this early third data release, which represents a major advance with respect to Gaia DR2 in terms of astrometric and photometric precision, accuracy, and homogeneity. Results. Gaia EDR3 contains celestial positions and the apparent brightness in G for approximately 1.8 billion sources. For 1.5 billion of those sources, parallaxes, proper motions, and the (G(BP) - G(RP)) colour are also available. The passbands for G, G(BP), and G(RP) are provided as part of the release. For ease of use, the 7 million radial velocities from Gaia DR2 are included in this release, after the removal of a small number of spurious values. New radial velocities will appear as part of Gaia DR3. Finally, Gaia EDR3 represents an updated materialisation of the celestial reference frame (CRF) in the optical, the Gaia-CRF3, which is based solely on extragalactic sources. The creation of the source list for Gaia EDR3 includes enhancements that make it more robust with respect to high proper motion stars, and the disturbing effects of spurious and partially resolved sources. The source list is largely the same as that for Gaia DR2, but it does feature new sources and there are some notable changes. The source list will not change for Gaia DR3. Conclusions. Gaia EDR3 represents a significant advance over Gaia DR2, with parallax precisions increased by 30 per cent, proper motion precisions increased by a factor of 2, and the systematic errors in the astrometry suppressed by 30-40% for the parallaxes and by a factor similar to 2.5 for the proper motions. The photometry also features increased precision, but above all much better homogeneity across colour, magnitude, and celestial position. A single passband for G, G(BP), and G(RP) is valid over the entire magnitude and colour range, with no systematics above the 1% level
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