Gaia Early Data Release 3: Summary of the contents and survey properties
Abstract
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. 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. Gaia EDR3 represents a significant advance over Gaia DR2, with parallax precisions increased by 30 percent, proper motion precisions increased by a factor of 2, and the systematic errors in the astrometry suppressed by 30--40 percent for the parallaxes and by a factor ~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 percent level.
Keywords
Cite
@article{arxiv.2012.01533,
title = {Gaia Early Data Release 3: Summary of the contents and survey properties},
author = {Gaia Collaboration and A. G. A Brown and A. Vallenari and T. Prusti and J. H. J. de Bruijne and C. Babusiaux and M. Biermann and O. L. Creevey and D. W. Evans and L. Eyer and A. Hutton and F. Jansen and C. Jordi and S. A. Klioner and U. Lammers and L. Lindegren and X. Luri and F. Mignard and C. Panem and D. Pourbaix and S. Randich and P. Sartoretti and C. Soubiran and N. A. Walton and F. Arenou and C. A. L. Bailer-Jones and U. Bastian and M. Cropper and R. Drimmel and D. Katz and M. G. Lattanzi and F. van Leeuwen and J. Bakker and C. Cacciari and J. Castañeda and F. De Angeli and C. Ducourant and C. Fabricius and M. Fouesneau and Y. Frémat and R. Guerra and A. Guerrier and J. Guiraud and A. Jean-Antoine Piccolo and E. Masana and R. Messineo and N. Mowlavi and C. Nicolas and K. Nienartowicz and F. Pailler and P. Panuzzo and F. Riclet and W. Roux and G. M. Seabroke and R. Sordo and P. Tanga and F. Thévenin and G. Gracia-Abril and J. Portell and D. Teyssier and M. Altmann and R. Andrae and I. Bellas-Velidis and K. Benson and J. Berthier and R. Blomme and E. Brugaletta and P. W. Burgess and G. Busso and B. Carry and A. Cellino and N. Cheek and G. Clementini and Y. Damerdji and M. Davidson and L. Delchambre and A. Dell'Oro and J. Fernández-Hernández and L. Galluccio and P. García-Lario and M. Garcia-Reinaldos and J. González-Núñez and E. Gosset and R. Haigron and J. -L. Halbwachs and N. C. Hambly and D. L. Harrison and D. Hatzidimitriou and U. Heiter and J. Hernández and D. Hestroffer and S. T. Hodgkin and B. Holl and K. Janßen and G. Jevardat de Fombelle and S. Jordan and A. Krone-Martins and A. C. Lanzafame and W. L\"{ o}ffler and A. Lorca and M. Manteiga and O. Marchal and P. M. Marrese and A. Moitinho and A. Mora and K. Muinonen and P. Osborne and E. Pancino and T. Pauwels and J. -M. Petit and A. Recio-Blanco and P. J. Richards and M. Riello and L. Rimoldini and A. C. Robin and T. Roegiers and J. Rybizki and L. M. Sarro and C. Siopis and M. Smith and A. Sozzetti and A. Ulla and E. Utrilla and M. van Leeuwen and W. van Reeven and U. Abbas and A. Abreu Aramburu and S. Accart and C. Aerts and J. J. Aguado and M. Ajaj and G. Altavilla and M. A. Álvarez and J. Álvarez Cid-Fuentes and J. Alves and R. I. Anderson and E. Anglada Varela and T. Antoja and M. Audard and D. Baines and S. G. Baker and L. Balaguer-Núñez and E. Balbinot and Z. Balog and C. Barache and D. Barbato and M. Barros and M. A. Barstow and S. Bartolomé and J. -L. Bassilana and N. Bauchet and A. Baudesson-Stella and U. Becciani and M. Bellazzini and M. Bernet and S. Bertone and L. Bianchi and S. Blanco-Cuaresma and T. Boch and A. Bombrun and D. Bossini and S. Bouquillon and A. Bragaglia and L. Bramante and E. Breedt and A. Bressan and N. Brouillet and B. Bucciarelli and A. Burlacu and D. Busonero and A. G. Butkevich and R. Buzzi and E. Caffau and R. Cancelliere and H. Cánovas and T. Cantat-Gaudin and R. Carballo and T. Carlucci and M. I Carnerero and J. M. Carrasco and L. Casamiquela and M. Castellani and A. Castro-Ginard and P. Castro Sampol and L. Chaoul and P. Charlot and L. Chemin and A. Chiavassa and M. -R. L. Cioni and G. Comoretto and W. J. Cooper and T. Cornez and S. Cowell and F. Crifo and M. Crosta and C. Crowley and C. Dafonte and A. Dapergolas and M. David and P. David and P. de Laverny and F. De Luise and R. De March and J. De Ridder and R. de Souza and P. de Teodoro and A. de Torres and E. F. del Peloso and E. del Pozo and M. Delbo and A. Delgado and H. E. Delgado and J. -B. Delisle and P. Di Matteo and S. Diakite and C. Diener and E. Distefano and C. Dolding and D. Eappachen and B. Edvardsson and H. Enke and P. Esquej and C. Fabre and M. Fabrizio and S. Faigler and G. Fedorets and P. Fernique and A. Fienga and F. Figueras and C. Fouron and F. Fragkoudi and E. Fraile and F. Franke and M. Gai and D. Garabato and A. Garcia-Gutierrez and M. García-Torres and A. Garofalo and P. Gavras and E. Gerlach and R. Geyer and P. Giacobbe and G. Gilmore and S. Girona and G. Giuffrida and R. Gomel and A. Gomez and I. Gonzalez-Santamaria and J. J. González-Vidal and M. Granvik and R. Gutiérrez-Sánchez and L. P. Guy and M. Hauser and M. Haywood and A. Helmi and S. L. Hidalgo and T. Hilger and N. Hładczuk and D. Hobbs and G. Holland and H. E. Huckle and G. Jasniewicz and P. G. Jonker and J. Juaristi Campillo and F. Julbe and L. Karbevska and P. Kervella and S. Khanna and A. Kochoska and M. Kontizas and G. Kordopatis and A. J. Korn and Z. Kostrzewa-Rutkowska and K. Kruszyńska and S. Lambert and A. F. Lanza and Y. Lasne and J. -F. Le Campion and Y. Le Fustec and Y. Lebreton and T. Lebzelter and S. Leccia and N. Leclerc and I. Lecoeur-Taibi and S. Liao and E. Licata and H. E. P. Lindstrøm and T. A. Lister and E. Livanou and A. Lobel and P. Madrero Pardo and S. Managau and R. G. Mann and J. M. Marchant and M. Marconi and M. M. S. Marcos Santos and S. Marinoni and F. Marocco and D. J. Marshall and L. Martin Polo and J. M. Martín-Fleitas and A. Masip and D. Massari and A. Mastrobuono-Battisti and T. Mazeh and P. J. McMillan and S. Messina and D. Michalik and N. R. Millar and A. Mints and D. Molina and R. Molinaro and L. Molnár and P. Montegriffo and R. Mor and R. Morbidelli and T. Morel and D. Morris and A. F. Mulone and D. Munoz and T. Muraveva and C. P. Murphy and I. Musella and L. Noval and C. Ordénovic and G. Orrù and J. Osinde and C. Pagani and I. Pagano and L. Palaversa and P. A. Palicio and A. Panahi and M. Pawlak and X. Peñalosa Esteller and A. Penttil\"{ a} and A. M. Piersimoni and F. -X. Pineau and E. Plachy and G. Plum and E. Poggio and E. Poretti and E. Poujoulet and A. Prša and L. Pulone and E. Racero and S. Ragaini and M. Rainer and C. M. Raiteri and N. Rambaux and P. Ramos and M. Ramos-Lerate and P. Re Fiorentin and S. Regibo and C. Reylé and V. Ripepi and A. Riva and G. Rixon and N. Robichon and C. Robin and M. Roelens and L. Rohrbasser and M. Romero-Gómez and N. Rowell and F. Royer and K. A. Rybicki and G. Sadowski and A. Sagristà Sellés and J. Sahlmann and J. Salgado and E. Salguero and N. Samaras and V. Sanchez Gimenez and N. Sanna and R. Santoveña and M. Sarasso and M. Schultheis and E. Sciacca and M. Segol and J. C. Segovia and D. Ségransan and D. Semeux and S. Shahaf and H. I. Siddiqui and A. Siebert and L. Siltala and E. Slezak and R. L. Smart and E. Solano and F. Solitro and D. Souami and J. Souchay and A. Spagna and F. Spoto and I. A. Steele and H. Steidelm\"{ u}ller and C. A. Stephenson and M. S\"{ u}veges and L. Szabados and E. Szegedi-Elek and F. Taris and G. Tauran and M. B. Taylor and R. Teixeira and W. Thuillot and N. Tonello and F. Torra and J. Torra and C. Turon and N. Unger and M. Vaillant and E. van Dillen and O. Vanel and A. Vecchiato and Y. Viala and D. Vicente and S. Voutsinas and M. Weiler and T. Wevers and Ł. Wyrzykowski and A. Yoldas and P. Yvard and H. Zhao and J. Zorec and S. Zucker and C. Zurbach and T. Zwitter},
journal= {arXiv preprint arXiv:2012.01533},
year = {2021}
}
Comments
Accepted for A&A Special Issue on Gaia EDR3, 21 pages, 2 figures. This version includes the updates in the erratum (https://doi.org/10.1051/0004-6361/202039657e)