Gaia Data Release 2. Summary of the contents and survey properties

A. Brown A. Vallenari T. Prusti 1 J. De Bruijne C. Babusiaux 2 C. Bailer-Jones M. Biermann D. Evans L. Eyer 3 F. Jansen 4 C. Jordi S. Klioner U. Lammers L. Lindegren X. Luri 5 F. Mignard 6 C. Panem D. Pourbaix 7 S. Randich P. Sartoretti 2 H. Siddiqui 8 C. Soubiran 9 F. Van Leeuwen A. Walton F. Arenou 2 U. Bastian 10 M. Cropper R. Drimmel D. Katz 2 M. Lattanzi 11 J. Bakker 12 C. Cacciari 13 J. Castañeda L. Chaoul N. Cheek F. De Angeli 14 C. Fabricius 15 R. Guerra 16 B. Holl 17 E. Masana 18 R. Messineo N. Mowlavi K. Nienartowicz P. Panuzzo 19 J. Portell M. Riello M. Seabroke P. Tanga 6 F. Thevenin 6 G. Gracia-Abril G. Comoretto 20 M. Garcia-Reinaldos D. Teyssier 21 M. Altmann 22 R. Andrae M. Audard 23 I. Bellas-Velidis K. Benson J. Berthier R. Blomme 24 P. Burgess 14 G. Busso 14 B. Carry 25 A. Cellino 26 G. Clementini 27 M. Clotet O. Creevey 28 M. David J. De Ridder 19 L. Delchambre A. Dell’oro C. Ducourant 9 J. Hernandez 29 M. Fouesneau Y. Frémat 2 L. Galluccio 30 M. García-Torres J. González-Núñez J. González-Vidal E. Gosset 31 P. Guy 32 J. Halbwachs C. Hambly D. Harrison D. Hestroffer 33 T. Hodgkin A. Hutton G. Jasniewicz 34 A. Jean-Antoine-Piccolo S. Jordan 35 J. Korn A. Krone-Martins 36 C. Lanza T. Lebzelter W. Löffler M. Manteiga M. Marrese J. Martín-Fleitas A. Moitinho 37 A. Mor K. Muinonen 38 J. Osinde E. Pancino 39 T. Pauwels 24 J. Petit 40 A. Recio-Blanco 6 J. Richards L. Rimoldini C. Robin M. Sarro C. Siopis M. Smith A. Sozzetti M. Süveges J. Torra W. Van Reeven U. Abbas 41 A. Abreu Aramburu S. Accart C. Aerts 42 G. Altavilla M. Álvarez R. Alvarez J. Alves R. Anderson H. Andrei E. Anglada Varela E. Antiche T. Antoja B. Arcay T. Astraatmadja 43 N. Bach 44 S. Baker L. Balaguer-Nunez 45 P. Balm C. Barache 22 C. Barata 46 D. Barbato F. Barblan S. Barklem D. Barrado 47 M. Barros M. Barstow 48 S. Bartholomé Muñoz J. Bassilana U. Becciani M. Bellazzini A. Berihuete S. Bertone L. Bianchi 49 O. Bienaymé 50 S. Blanco-Cuaresma 51 T. Boch C. Boeche A. Bombrun 52 R. Borrachero D. Bossini S. Bouquillon 22 G. Bourda 9 A. Bragaglia L. Bramante M. Breddels A. Bressan 53 N. Brouillet 54 T. Brüsemeister E. Brugaletta B. Bucciarelli A. Burlacu D. Busonero A. Butkevich R. Buzzi E. Caffau 2 R. Cancelliere G. Cannizzaro T. Cantat-Gaudin R. Carballo T. Carlucci 22 J. Carrasco 55 L. Casamiquela 9 M. Castellani 56 A. Castro-Ginard P. Charlot 9 L. Chemin A. Chiavassa 34 G. Cocozza G. Costigan S. Cowell 14 F. Crifo 2 M. Crosta C. Crowley 57 J. Cuypers† C. Dafonte Y. Damerdji 58 A. Dapergolas P. David P. De Laverny 6 F. De Luise 59 R. De March D. Martino 60 R. De Souza A. De Torres J. Debosscher 61 E. Del Pozo M. Delbò 6 A. Delgado 62 H. Delgado P. Di Matteo 2 S. Diakite 63 C. Diener E. Distefano C. Dolding P. Drazinos J. Duran 64 B. Edvardsson 65 H. Enke K. Eriksson 65 P. Esquej G. Eynard Bontemps C. Fabre 66 M. Fabrizio 67 S. Faigler J. Falcão M. Farràs Casas L. Federici 68 G. Fedorets P. Fernique 69 F. Figueras 70 F. Filippi 71 K. Findeisen A. Fonti E. Fraile M. Fraser 72 B. Frézouls M. Gai 26 S. Galleti D. Garabato F. García-Sedano A. Garofalo 73 N. Garralda A. Gavel P. Gavras J. Gerssen R. Geyer P. Giacobbe G. Gilmore S. Girona G. Giuffrida F. Glass M. Gomes M. Granvik A. Gueguen 74 A. Guerrier 75 J. Guiraud 76 R. Gutiérrez-Sánchez R. Haigron 2 D. Hatzidimitriou 77 M. Hauser M. Haywood 2 U. Heiter 65 A. Helmi 78 J. Heu T. Hilger D. Hobbs W. Hofmann G. Holland H. Huckle A. Hypki V. Icardi K. Janßen G. Jevardat de Fombelle G. Jonker L. Juhasz 79 F. Julbe A. Karampelas A. Kewley J. Klar A. Kochoska R. Kohley 80 K. Kolenberg M. Kontizas E. Kontizas S. Koposov G. Kordopatis 6 Z. Kostrzewa-Rutkowska P. Koubsky S. Lambert 81 A. Lanza Y. Lasne 82 J. Lavigne Y. Le Fustec C. Le Poncin-Lafitte 83 Y. Lebreton 2 S. Leccia N. Leclerc 84 I. Lecoeur-Taibi H. Lenhardt F. Leroux 85 S. Liao 86 E. Licata H. Lindstrøm T. Lister E. Livanou A. Lobel 24 M. López S. Managau G. Mann 87 G. Mantelet 88 O. Marchal 89 J. Marchant 90 M. Marconi S. Marinoni G. Marschalkó D. J. Marshall 91 M. Martino G. Marton 92 N. Mary 93 D. Massari G. Matijevič T. Mazeh 94 J. Mcmillan S. Messina D. Michalik R. Millar 95 D. Molina R. Molinaro 96 L. Molnar 97 P. Montegriffo R. Mor R. Morbidelli T. Morel D. Morris 98 A. Mulone T. Muraveva I. Musella G. Nelemans L. Nicastro L. Noval W. O’mullane C. Ordenovic 6 D. Ordóñez-Blanco P. Osborne C. Pagani I. Pagano F. Pailler 99 H. Palacin L. Palaversa A. Panahi M. Pawlak M. Piersimoni F. Pineau 100 E. Plachy G. Plum E. Poggio E. Poujoulet A. Prša L. Pulone E. Racero S. Ragaini N. Rambaux 33 M. Ramos-Lerate S. Regibo C. Reyle 101 F. Riclet V. Ripepi 102 A. Riva 103 A. Rivard G. Rixon 14 T. Roegiers M. Roelens 104 M. Romero-Gomez 105 N. Rowell F. Royer 2 L. Ruiz-Dern 75 G. Sadowski 106 T. Sagristà Sellés J. Sahlmann J. Salgado 107 E. Salguero N. Sanna T. Santana-Ros 108 M. Sarasso H. Savietto M. Schultheis 101 E. Sciacca M. Segol 109 C. Segovia D. Segransan 51 C. Shih 110 L. Siltala A. Silva R. Smart 26 W. Smith E. Solano 111 F. Solitro R. Sordo S. Soria Nieto J. Souchay 22 A. Spagna F. Spoto 112 U. Stampa A. Steele 113 H. Steidelmüller C. Stephenson H. Stoev F. Suess J. Surdej 114 L. Szabados 115 E. Szegedi-Elek D. Tapiador F. Taris G. Tauran M. Taylor R. Teixeira 116 D. Terrett P. Teyssandier 22 W. Thuillot 33 A. Titarenko F. Torra Clotet C. Turon 2 A. Ulla E. Utrilla S. Uzzi M. Vaillant 117 G. Valentini 118 V. Valette 119 A. Van Elteren E. Van Hemelryck M. Van Leeuwen M. Vaschetto A. Vecchiato 120 J. Veljanoski Y. Viala 2 D. Vicente 121 S. Vogt 122 C. Von Essen H. Voss V. Votruba S. Voutsinas G. Walmsley M. Weiler 123 O. Wertz T. Wevers 124 Ł. Wyrzykowski A. Yoldas 14 M. Žerjal H. Ziaeepour 125 J. Zorec 126 S. Zschocke 127 S. Zucker 128 C. Zurbach 129 T. Zwitter
9 M2A 2018
LAB - Laboratoire d'Astrophysique de Bordeaux [Pessac]
54 FORMATION STELLAIRE 2018
LAB - Laboratoire d'Astrophysique de Bordeaux [Pessac]
119 Equipe EES
EBI - Ecologie et biologie des interactions
120 Astrometry
OATo - INAF - Osservatorio Astrofisico di Torino
Abstract : Context. We present the second Gaia data release, Gaia DR2, consisting of astrometry, photometry, radial velocities, and information on astrophysical parameters and variability, for sources brighter than magnitude 21. In addition epoch astrometry and photometry are provided for a modest sample of minor planets in the solar system. Aims: A summary of the contents of Gaia DR2 is presented, accompanied by a discussion on the differences with respect to Gaia DR1 and an overview of the main limitations which are still present in the survey. Recommendations are made on the responsible use of Gaia DR2 results. Methods: The raw data collected with the Gaia instruments during the first 22 months of the mission have been processed by the Gaia Data Processing and Analysis Consortium (DPAC) and turned into this second data release, which represents a major advance with respect to Gaia DR1 in terms of completeness, performance, and richness of the data products. Results: Gaia DR2 contains celestial positions and the apparent brightness in G for approximately 1.7 billion sources. For 1.3 billion of those sources, parallaxes and proper motions are in addition available. The sample of sources for which variability information is provided is expanded to 0.5 million stars. This data release contains four new elements: broad-band colour information in the form of the apparent brightness in the GBP (330-680 nm) and GRP (630-1050 nm) bands is available for 1.4 billion sources; median radial velocities for some 7 million sources are presented; for between 77 and 161 million sources estimates are provided of the stellar effective temperature, extinction, reddening, and radius and luminosity; and for a pre-selected list of 14 000 minor planets in the solar system epoch astrometry and photometry are presented. Finally, Gaia DR2 also represents a new materialisation of the celestial reference frame in the optical, the Gaia-CRF2, which is the first optical reference frame based solely on extragalactic sources. There are notable changes in the photometric system and the catalogue source list with respect to Gaia DR1, and we stress the need to consider the two data releases as independent. Conclusions: Gaia DR2 represents a major achievement for the Gaia mission, delivering on the long standing promise to provide parallaxes and proper motions for over 1 billion stars, and representing a first step in the availability of complementary radial velocity and source astrophysical information for a sample of stars in the Gaia survey which covers a very substantial fraction of the volume of our galaxy.
Type de document :
Article dans une revue
Astronomy and Astrophysics - A&A, EDP Sciences, 2018, 616, pp.id.A1. 〈10.1051/0004-6361/201833051〉
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https://hal.archives-ouvertes.fr/hal-01867401
Contributeur : Marie-Paule Pomies <>
Soumis le : mardi 4 septembre 2018 - 12:11:19
Dernière modification le : vendredi 28 septembre 2018 - 19:04:02

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A. Brown, A. Vallenari, T. Prusti, J. De Bruijne, C. Babusiaux, et al.. Gaia Data Release 2. Summary of the contents and survey properties. Astronomy and Astrophysics - A&A, EDP Sciences, 2018, 616, pp.id.A1. 〈10.1051/0004-6361/201833051〉. 〈hal-01867401〉

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