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  1. OA@INAF
  2. PRODOTTI RICERCA INAF
  3. 1 CONTRIBUTI IN RIVISTE (Journal articles)
  4. 1.01 Articoli in rivista
Please use this identifier to cite or link to this item: http://hdl.handle.net/20.500.12386/28144
Title: Gaia Data Release 2. Summary of the contents and survey properties
Authors: Gaia Collaboration
Brown, A. G. A.
VALLENARI, Antonella 
Prusti, T.
de Bruijne, J. H. J.
Babusiaux, C.
Bailer-Jones, C. A. L.
Biermann, M.
Evans, D. W.
Eyer, L.
Jansen, F.
Jordi, C.
Klioner, S. A.
Lammers, U.
Lindegren, L.
Luri, X.
Mignard, F.
Panem, C.
Pourbaix, D.
RANDICH, Maria Sofia 
Sartoretti, P.
Siddiqui, H. I.
Soubiran, C.
van Leeuwen, F.
Walton, N. A.
Arenou, F.
Bastian, U.
Cropper, M.
DRIMMEL, Ronald 
Katz, D.
GAI, Mario 
Bakker, J.
Cacciari, C.
Castañeda, J.
Chaoul, L.
Cheek, N.
De Angeli, F.
Fabricius, C.
Guerra, R.
Holl, B.
Masana, E.
Messineo, R.
Mowlavi, N.
Nienartowicz, K.
Panuzzo, P.
Portell, J.
Riello, M.
Seabroke, G. M.
Tanga, P.
Thévenin, F.
Gracia-Abril, G.
Comoretto, G.
Garcia-Reinaldos, M.
Teyssier, D.
Altmann, M.
Andrae, R.
Audard, M.
Bellas-Velidis, I.
Benson, K.
Berthier, J.
Blomme, R.
Burgess, P.
Busso, G.
Carry, B.
CELLINO, Alberto 
CLEMENTINI, Gisella 
Clotet, M.
Creevey, O.
Davidson, M.
De Ridder, J.
Delchambre, L.
DELL'ORO, Aldo 
Ducourant, C.
Fernández-Hernández, J.
Fouesneau, M.
Frémat, Y.
Galluccio, L.
García-Torres, M.
González-Núñez, J.
González-Vidal, J. J.
Gosset, E.
Guy, L. P.
Halbwachs, J. -L.
Hambly, N. C.
Harrison, D. L.
Hernández, J.
Hestroffer, D.
Hodgkin, S. T.
Hutton, A.
Jasniewicz, G.
Jean-Antoine-Piccolo, A.
Jordan, S.
Korn, A. J.
Krone-Martins, A.
Lanzafame, Alessandro Carmelo 
Lebzelter, T.
Löffler, W.
Manteiga, M.
MARRESE, Paola Maria 
Martín-Fleitas, J. M.
Moitinho, A.
Mora, A.
Muinonen, K.
Osinde, J.
PANCINO, ELENA 
Pauwels, T.
Petit, J. -M.
Recio-Blanco, A.
Richards, P. J.
Rimoldini, L.
Robin, A. C.
Sarro, L. M.
Siopis, C.
Smith, M.
SOZZETTI, Alessandro 
Süveges, M.
Torra, J.
van Reeven, W.
ABBAS, Ummi 
Abreu Aramburu, A.
Accart, S.
Aerts, C.
ALTAVILLA, GIUSEPPE 
Álvarez, M. A.
Alvarez, R.
Alves, J.
Anderson, R. I.
Andrei, A. H.
Anglada Varela, E.
Antiche, E.
Antoja, T.
Arcay, B.
Astraatmadja, T. L.
Bach, N.
Baker, S. G.
Balaguer-Núñez, L.
Balm, P.
Barache, C.
Barata, C.
Barbato, D.
Barblan, F.
Barklem, P. S.
Barrado, D.
Barros, M.
Barstow, M. A.
Bartholomé Muñoz, S.
Bassilana, J. -L.
Becciani, U.
BELLAZZINI, Michele 
Berihuete, A.
Bertone, S.
Bianchi, L.
Bienaymé, O.
Blanco-Cuaresma, S.
Boch, T.
BOECHE, CORRADO 
Bombrun, A.
Borrachero, R.
Bossini, D.
Bouquillon, S.
Bourda, G.
BRAGAGLIA, Angela 
Bramante, L.
Breddels, M. A.
Bressan, A.
Brouillet, N.
Brüsemeister, T.
Brugaletta, Elisa 
Bucciarelli, B.
Burlacu, A.
BUSONERO, Deborah 
Butkevich, A. G.
Buzzi, R.
Caffau, E.
Cancelliere, R.
Cannizzaro, G.
Cantat-Gaudin, T.
Carballo, R.
Carlucci, T.
Carrasco, J. M.
Casamiquela, L.
Castellani, M.
Castro-Ginard, A.
Charlot, P.
Chemin, L.
Chiavassa, A.
Cocozza, G.
Costigan, G.
Cowell, S.
Crifo, F.
CROSTA, Mariateresa 
Crowley, C.
Cuypers, J.
Dafonte, C.
Damerdji, Y.
Dapergolas, A.
David, P.
David, M.
de Laverny, P.
DE LUISE, Fiore 
De March, R.
DE MARTINO, Domitilla 
de Souza, R.
de Torres, A.
Debosscher, J.
del Pozo, E.
Delbo, M.
Delgado, A.
Delgado, H. E.
Di Matteo, P.
Diakite, S.
Diener, C.
DISTEFANO, Elisa Maria Carmela 
Dolding, C.
Drazinos, P.
Durán, J.
Edvardsson, B.
Enke, H.
Eriksson, K.
Esquej, P.
Eynard Bontemps, G.
Fabre, C.
FABRIZIO, Michele 
Faigler, S.
Falcão, A. J.
Farràs Casas, M.
Federici, L.
Fedorets, G.
Fernique, P.
Figueras, F.
Filippi, F.
Findeisen, K.
Fonti, A.
Fraile, E.
Fraser, M.
Frézouls, B.
Gai, M.
GALLETI, SILVIA 
Garabato, D.
García-Sedano, F.
GAROFALO, Alessia 
Garralda, N.
Gavel, A.
Gavras, P.
Gerssen, J.
Geyer, R.
Giacobbe, P.
Gilmore, G.
Girona, S.
Giuffrida, G.
Glass, F.
Gomes, M.
Granvik, M.
Gueguen, A.
Guerrier, A.
Guiraud, J.
Gutiérrez-Sánchez, R.
Haigron, R.
Hatzidimitriou, D.
Hauser, M.
Haywood, M.
Heiter, U.
Helmi, A.
Heu, J.
Hilger, T.
Hobbs, D.
Hofmann, W.
Holland, G.
Huckle, H. E.
Hypki, A.
Icardi, V.
Janßen, K.
Jevardat de Fombelle, G.
Jonker, P. G.
Juhász, Á. L.
Julbe, F.
Karampelas, A.
Kewley, A.
Klar, J.
Kochoska, A.
Kohley, R.
Kolenberg, K.
Kontizas, M.
Kontizas, E.
Koposov, S. E.
Kordopatis, G.
Kostrzewa-Rutkowska, Z.
Koubsky, P.
Lambert, S.
LANZA, Antonino Francesco 
Lasne, Y.
Lavigne, J. -B.
Le Fustec, Y.
Le Poncin-Lafitte, C.
Lebreton, Y.
LECCIA, Silvio 
Leclerc, N.
Lecoeur-Taibi, I.
Lenhardt, H.
Leroux, F.
Liao, S.
LICATA, ENRICO 
Lindstrøm, H. E. P.
Lister, T. A.
Livanou, E.
Lobel, A.
López, M.
Managau, S.
Mann, R. G.
Mantelet, G.
Marchal, O.
Marchant, J. M.
MARCONI, Marcella 
MARINONI, SILVIA 
Marschalkó, G.
Marshall, D. J.
Martino, M.
Marton, G.
Mary, N.
MASSARI, DAVIDE 
Matijevič, G.
Mazeh, T.
McMillan, P. J.
MESSINA, Sergio 
Michalik, D.
Millar, N. R.
Molina, D.
MOLINARO, Roberto 
Molnár, L.
Montegriffo, P.
Mor, R.
Morbidelli, R.
Morel, T.
Morris, D.
Mulone, A. F.
Muraveva, Tatiana 
MUSELLA, ILARIA 
Nelemans, G.
NICASTRO, LUCIANO 
Noval, L.
O'Mullane, W.
Ordénovic, C.
Ordóñez-Blanco, D.
Osborne, P.
Pagani, C.
PAGANO, Isabella 
Pailler, F.
Palacin, H.
Palaversa, L.
Panahi, A.
Pawlak, M.
PIERSIMONI, Anna Marina 
Pineau, F. -X.
Plachy, E.
Plum, G.
Poggio, E.
Poujoulet, E.
Prša, A.
PULONE, Luigi 
Racero, E.
Ragaini, S.
Rambaux, N.
Ramos-Lerate, M.
Regibo, S.
Reylé, C.
Riclet, F.
RIPEPI, Vincenzo 
Riva, A. 
Rivard, A.
Rixon, G.
Roegiers, T.
Roelens, M.
Romero-Gómez, M.
Rowell, N.
Royer, F.
Ruiz-Dern, L.
Sadowski, G.
Sagristà Sellés, T.
Sahlmann, J.
Salgado, J.
Salguero, E.
SANNA, Nicoletta 
Santana-Ros, T.
SARASSO, Maria Margherita 
Savietto, H.
Schultheis, M.
SCIACCA, Eva 
Segol, M.
Segovia, J. C.
Ségransan, D.
Shih, I. -C.
Siltala, L.
Silva, A. F.
Smart, R. L.
Smith, K. W.
Solano, E.
Solitro, F.
SORDO, ROSANNA 
Soria Nieto, S.
Souchay, J.
SPAGNA, Alessandro 
Spoto, F.
Stampa, U.
Steele, I. A.
Steidelmüller, H.
Stephenson, C. A.
Stoev, H.
Suess, F. F.
Surdej, J.
Szabados, L.
Szegedi-Elek, E.
Tapiador, D.
Taris, F.
Tauran, G.
Taylor, M. B.
Teixeira, R.
Terrett, D.
Teyssandier, P.
Thuillot, W.
Titarenko, A.
Torra Clotet, F.
Turon, C.
Ulla, A.
Utrilla, E.
Uzzi, S.
Vaillant, M.
Valentini, G.
Valette, V.
van Elteren, A.
Van Hemelryck, E.
van Leeuwen, M.
Vaschetto, M.
Vecchiato, A.
Veljanoski, J.
Viala, Y.
Vicente, D.
Vogt, S.
von Essen, C.
Voss, H.
Votruba, V.
Voutsinas, S.
Walmsley, G.
Weiler, M.
Wertz, O.
Wevers, T.
Wyrzykowski, Ł.
Yoldas, A.
Žerjal, M.
Ziaeepour, H.
Zorec, J.
Zschocke, S.
Zucker, S.
Zurbach, C.
Zwitter, T.
Issue Date: 2018
Journal: ASTRONOMY & ASTROPHYSICS 
Number: 616
First Page: A1
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. <BR /> 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. <BR /> 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. <BR /> 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 G<SUB>BP</SUB> (330-680 nm) and G<SUB>RP</SUB> (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. <BR /> 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.
URI: http://hdl.handle.net/20.500.12386/28144
URL: https://arxiv.org/pdf/1804.09365.pdf
https://www.aanda.org/articles/aa/abs/2018/08/aa33051-18/aa33051-18.html
ISSN: 0004-6361
DOI: 10.1051/0004-6361/201833051
Bibcode ADS: 2018A&A...616A...1G
Fulltext: open
Appears in Collections:1.01 Articoli in rivista

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