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Verfasst von:Brown, Anthony G. A. [VerfasserIn]   i
 Biermann, Michael [VerfasserIn]   i
 Bastian, Ulrich [VerfasserIn]   i
 Gracia-Abril, Gonzalo [VerfasserIn]   i
 Altmann, Martin [VerfasserIn]   i
 Jordan, Stefan [VerfasserIn]   i
 Löffler, Wolfgang [VerfasserIn]   i
 Brüsemeister, Thomas [VerfasserIn]   i
 Hauser, Marcus [VerfasserIn]   i
 Hofmann, Wilfried [VerfasserIn]   i
 Lenhardt, Helmut [VerfasserIn]   i
 Mantelet, Grégory [VerfasserIn]   i
 Sagristà Sellés, Antoni [VerfasserIn]   i
 Stampa, Ulrike [VerfasserIn]   i
Titel:Gaia data release 2
Titelzusatz:Summary of the contents and survey properties
Körperschaft:Gaia collaboration [VerfasserIn]   i
Verf.angabe:Gaia Collaboration, A.G.A. Brown, A. Vallenari, T. Prusti, J.H.J. de Bruijne, C. Babusiaux, C.a.L. Bailer-Jones, M. Biermann, D.W. Evans, L. Eyer, F. Jansen, C. Jordi, S.A. Klioner, U. Lammers, L. Lindegren, X. Luri, F. Mignard, C. Panem, D. Pourbaix, S. Randich, P. Sartoretti, H.I. Siddiqui, C. Soubiran, F. van Leeuwen, N.A. Walton, F. Arenou, U. Bastian, M. Cropper, R. Drimmel, D. Katz, M.G. Lattanzi, J. Bakker, C. Cacciari, J. Castañeda, L. Chaoul, N. Cheek, F. De Angeli, C. Fabricius, R. Guerra, B. Holl, E. Masana, R. Messineo, N. Mowlavi, K. Nienartowicz, P. Panuzzo, J. Portell, M. Riello, G.M. Seabroke, P. Tanga, F. Thévenin, G. Gracia-Abril, G. Comoretto, M. Garcia-Reinaldos, D. Teyssier, M. Altmann, R. Andrae, M. Audard, I. Bellas-Velidis, K. Benson, J. Berthier, R. Blomme, P. Burgess, G. Busso, B. Carry, A. Cellino, G. Clementini, M. Clotet, O. Creevey, M. Davidson, J. De Ridder, L. Delchambre, A. Dell’Oro, C. Ducourant, J. Fernández-Hernández, M. Fouesneau, Y. Frémat, L. Galluccio, M. García-Torres, J. González-Núñez, J.J. González-Vidal, E. Gosset, L.P. Guy, J.-L. Halbwachs, N.C. Hambly, D.L. Harrison, J. Hernández, D. Hestroffer, S.T. Hodgkin, A. Hutton, G. Jasniewicz, A. Jean-Antoine-Piccolo, S. Jordan, A.J. Korn, A. Krone-Martins, A.C. Lanzafame, T. Lebzelter, W. Löffler, M. Manteiga, P.M. Marrese, J.M. Martín-Fleitas, A. Moitinho, A. Mora, K. Muinonen, J. Osinde, E. Pancino, T. Pauwels, J.-M. Petit, A. Recio-Blanco, P.J. Richards, L. Rimoldini, A.C. Robin, L.M. Sarro, C. Siopis, M. Smith, A. Sozzetti, M. Süveges, J. Torra, W. van Reeven, U. Abbas, A. Abreu Aramburu, S. Accart, C. Aerts, G. Altavilla, M.A. Álvarez, R. Alvarez, J. Alves, R.I. Anderson, A.H. Andrei, E. Anglada Varela, E. Antiche, T. Antoja, B. Arcay, T.L. Astraatmadja, N. Bach, S.G. Baker, L. Balaguer-Núñez, P. Balm, C. Barache, C. Barata, D. Barbato, F. Barblan, P.S. Barklem, D. Barrado, M. Barros, M.A. Barstow, S. Bartholomé Muñoz, J.-L. Bassilana, U. Becciani, M. Bellazzini, A. Berihuete, S. Bertone, L. Bianchi, O. Bienaymé, S. Blanco-Cuaresma, T. Boch, C. Boeche, A. Bombrun, R. Borrachero, D. Bossini, S. Bouquillon, G. Bourda, A. Bragaglia, L. Bramante, M.A. Breddels, A. Bressan, N. Brouillet, T. Brüsemeister, E. Brugaletta, B. Bucciarelli, A. Burlacu, D. Busonero, A.G. Butkevich, R. Buzzi, E. Caffau, R. Cancelliere, G. Cannizzaro, T. Cantat-Gaudin, R. Carballo, T. Carlucci, J.M. Carrasco, L. Casamiquela, M. Castellani, A. Castro-Ginard, P. Charlot, L. Chemin, A. Chiavassa, G. Cocozza, G. Costigan, S. Cowell, F. Crifo, M. Crosta, C. Crowley, J. Cuypers, C. Dafonte, Y. Damerdji, A. Dapergolas, P. David, M. David, P. de Laverny, F. De Luise, R. De March, D. de Martino, R. de Souza, A. de Torres, J. Debosscher, E. del Pozo, M. Delbo, A. Delgado, H.E. Delgado, P. Di Matteo, S. Diakite, C. Diener, E. Distefano, C. Dolding, P. Drazinos, J. Durán, B. Edvardsson, H. Enke, K. Eriksson, P. Esquej, G. Eynard Bontemps, C. Fabre, M. Fabrizio, S. Faigler, A.J. Falcão, M. Farràs Casas, L. Federici, G. Fedorets, P. Fernique, F. Figueras, F. Filippi, K. Findeisen, A. Fonti, E. Fraile, M. Fraser, B. Frézouls, M. Gai, S. Galleti, D. Garabato, F. García-Sedano, A. Garofalo, 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, A. Guerrier, J. Guiraud, R. Gutiérrez-Sánchez, R. Haigron, D. Hatzidimitriou, M. Hauser, M. Haywood, U. Heiter, A. Helmi, J. Heu, T. Hilger, D. Hobbs, W. Hofmann, G. Holland, H.E. Huckle, A. Hypki, V. Icardi, K. Janßen, G. Jevardat de Fombelle, P.G. Jonker, Á.L. Juhász, F. Julbe, A. Karampelas, A. Kewley, J. Klar, A. Kochoska, R. Kohley, K. Kolenberg, M. Kontizas, E. Kontizas, S.E. Koposov, G. Kordopatis, Z. Kostrzewa-Rutkowska, P. Koubsky, S. Lambert, A.F. Lanza, Y. Lasne, J.-B. Lavigne, Y. Le Fustec, C. Le Poncin-Lafitte, Y. Lebreton, S. Leccia, N. Leclerc, I. Lecoeur-Taibi, H. Lenhardt, F. Leroux, S. Liao, E. Licata, H.E.P. Lindstrøm, T.A. Lister, E. Livanou, A. Lobel, M. López, S. Managau, R.G. Mann, G. Mantelet, O. Marchal, J.M. Marchant, M. Marconi, S. Marinoni, G. Marschalkó, D.J. Marshall, M. Martino, G. Marton, N. Mary, D. Massari, G. Matijevič, T. Mazeh, P.J. McMillan, S. Messina, D. Michalik, N.R. Millar, D. Molina, R. Molinaro, L. Molnár, P. Montegriffo, R. Mor, R. Morbidelli, T. Morel, D. Morris, A.F. Mulone, T. Muraveva, I. Musella, G. Nelemans, L. Nicastro, L. Noval, W. O’Mullane, C. Ordénovic, D. Ordóñez-Blanco, P. Osborne, C. Pagani, I. Pagano, F. Pailler, H. Palacin, L. Palaversa, A. Panahi, M. Pawlak, A.M. Piersimoni, F.-X. Pineau, E. Plachy, G. Plum, E. Poggio, E. Poujoulet, A. Prša, L. Pulone, E. Racero, S. Ragaini, N. Rambaux, M. Ramos-Lerate, S. Regibo, C. Reylé, F. Riclet, V. Ripepi, A. Riva, A. Rivard, G. Rixon, T. Roegiers, M. Roelens, M. Romero-Gómez, N. Rowell, F. Royer, L. Ruiz-Dern, G. Sadowski, T. Sagristà Sellés, J. Sahlmann, J. Salgado, E. Salguero, N. Sanna, T. Santana-Ros, M. Sarasso, H. Savietto, M. Schultheis, E. Sciacca, M. Segol, J.C. Segovia, D. Ségransan, I.-C. Shih, L. Siltala, A.F. Silva, R.L. Smart, K.W. Smith, E. Solano, F. Solitro, R. Sordo, S. Soria Nieto, J. Souchay, A. Spagna, F. Spoto, U. Stampa, I.A. Steele, H. Steidelmüller, C.A. Stephenson, H. Stoev, F.F. Suess, J. Surdej, L. Szabados, E. Szegedi-Elek, D. Tapiador, F. Taris, G. Tauran, M.B. Taylor, R. Teixeira, D. Terrett, P. Teyssandier, W. Thuillot, A. Titarenko, F. Torra Clotet, C. Turon, A. Ulla, E. Utrilla, S. Uzzi, M. Vaillant, G. Valentini, V. Valette, A. van Elteren, E. Van Hemelryck, M. van Leeuwen, M. Vaschetto, A. Vecchiato, J. Veljanoski, Y. Viala, D. Vicente, S. Vogt, C. von Essen, H. Voss, V. Votruba, S. Voutsinas, G. Walmsley, M. Weiler, O. Wertz, T. Wevers, Ł. Wyrzykowski, A. Yoldas, M. Žerjal, H. Ziaeepour, J. Zorec, S. Zschocke, S. Zucker, C. Zurbach, T. Zwitter
E-Jahr:2018
Jahr:10 August 2018
Umfang:22 S.
Fussnoten:Gesehen am 28.02.2019
Titel Quelle:Enthalten in: Astronomy and astrophysics
Ort Quelle:Les Ulis : EDP Sciences, 1969
Jahr Quelle:2018
Band/Heft Quelle:616(2018) Artikel-Nummer A1, 22 Seiten
ISSN Quelle:1432-0746
Abstract:<i>Context.<i/> We present the second <i>Gaia<i/> data release, <i>Gaia<i/> 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.<i>Aims.<i/> A summary of the contents of <i>Gaia<i/> DR2 is presented, accompanied by a discussion on the differences with respect to <i>Gaia<i/> DR1 and an overview of the main limitations which are still present in the survey. Recommendations are made on the responsible use of <i>Gaia<i/> DR2 results.<i>Methods.<i/> The raw data collected with the <i>Gaia<i/> instruments during the first 22 months of the mission have been processed by the <i>Gaia<i/> Data Processing and Analysis Consortium (DPAC) and turned into this second data release, which represents a major advance with respect to <i>Gaia<i/> DR1 in terms of completeness, performance, and richness of the data products. <i>Results. Gaia<i/> DR2 contains celestial positions and the apparent brightness in <i>G<i/> 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 <i>G<i/><sub>BP<sub/> (330-680 nm) and <i>G<i/><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, <i>Gaia<i/> DR2 also represents a new materialisation of the celestial reference frame in the optical, the <i>Gaia<i/>-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 <i>Gaia<i/> DR1, and we stress the need to consider the two data releases as independent. <i>Conclusions. Gaia<i/> DR2 represents a major achievement for the <i>Gaia<i/> 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 <i>Gaia<i/> survey which covers a very substantial fraction of the volume of our galaxy.
DOI:doi:10.1051/0004-6361/201833051
URL:Bitte beachten Sie: Dies ist ein Bibliographieeintrag. Ein Volltextzugriff für Mitglieder der Universität besteht hier nur, falls für die entsprechende Zeitschrift/den entsprechenden Sammelband ein Abonnement besteht oder es sich um einen OpenAccess-Titel handelt.

Volltext: http://dx.doi.org/10.1051/0004-6361/201833051
 DOI: https://doi.org/10.1051/0004-6361/201833051
Datenträger:Online-Ressource
Sprache:eng
K10plus-PPN:1588214958
Verknüpfungen:→ Zeitschrift

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