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Gaia Data Release 1 : Summary of the astrometric, photometric, and survey properties

Brown, A. G A; Vallenari, A.; Prusti, T.; De Bruijne, J. H J; Mignard, F.; Drimmel, R.; Babusiaux, C.; Bailer-Jones, C. A L; Bastian, U. and Biermann, M., et al. (2016) In Astronomy and Astrophysics 595.
Abstract

Context. At about 1000 days after the launch of Gaia we present the first Gaia data release, Gaia DR1, consisting of astrometry and photometry for over 1 billion sources brighter than magnitude 20.7. Aims. A summary of Gaia DR1 is presented along with illustrations of the scientific quality of the data, followed by a discussion of the limitations due to the preliminary nature of this release. Methods. The raw data collected by Gaia during the first 14 months of the mission have been processed by the Gaia Data Processing and Analysis Consortium (DPAC) and turned into an astrometric and photometric catalogue. Results. Gaia DR1 consists of three components: a primary astrometric data set which contains the positions, parallaxes, and mean... (More)

Context. At about 1000 days after the launch of Gaia we present the first Gaia data release, Gaia DR1, consisting of astrometry and photometry for over 1 billion sources brighter than magnitude 20.7. Aims. A summary of Gaia DR1 is presented along with illustrations of the scientific quality of the data, followed by a discussion of the limitations due to the preliminary nature of this release. Methods. The raw data collected by Gaia during the first 14 months of the mission have been processed by the Gaia Data Processing and Analysis Consortium (DPAC) and turned into an astrometric and photometric catalogue. Results. Gaia DR1 consists of three components: a primary astrometric data set which contains the positions, parallaxes, and mean proper motions for about 2 million of the brightest stars in common with the Hipparcos and Tycho-2 catalogues - a realisation of the Tycho-Gaia Astrometric Solution (TGAS) - and a secondary astrometric data set containing the positions for an additional 1.1 billion sources. The second component is the photometric data set, consisting of mean G-band magnitudes for all sources. The G-band light curves and the characteristics of ∼3000 Cepheid and RR Lyrae stars, observed at high cadence around the south ecliptic pole, form the third component. For the primary astrometric data set the typical uncertainty is about 0.3 mas for the positions and parallaxes, and about 1 mas yr-1 for the proper motions. A systematic component of ∼0.3 mas should be added to the parallax uncertainties. For the subset of ∼94 000 Hipparcos stars in the primary data set, the proper motions are much more precise at about 0.06 mas yr-1. For the secondary astrometric data set, the typical uncertainty of the positions is ∼10 mas. The median uncertainties on the mean G-band magnitudes range from the mmag level to ∼0.03 mag over the magnitude range 5 to 20.7. Conclusions. Gaia DR1 is an important milestone ahead of the next Gaia data release, which will feature five-parameter astrometry for all sources. Extensive validation shows that Gaia DR1 represents a major advance in the mapping of the heavens and the availability of basic stellar data that underpin observational astrophysics. Nevertheless, the very preliminary nature of this first Gaia data release does lead to a number of important limitations to the data quality which should be carefully considered before drawing conclusions from the data.

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Astrometry, Catalogs, Parallaxes, Proper motions, Surveys
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Astronomy and Astrophysics
volume
595
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EDP Sciences
external identifiers
  • scopus:84998772012
  • wos:000388573500136
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0004-6361
DOI
10.1051/0004-6361/201629512
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English
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273be16e-0bec-4313-bf21-5236501579ed
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2016-12-29 17:03:29
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2017-11-19 04:36:21
@article{273be16e-0bec-4313-bf21-5236501579ed,
  abstract     = {<p>Context. At about 1000 days after the launch of Gaia we present the first Gaia data release, Gaia DR1, consisting of astrometry and photometry for over 1 billion sources brighter than magnitude 20.7. Aims. A summary of Gaia DR1 is presented along with illustrations of the scientific quality of the data, followed by a discussion of the limitations due to the preliminary nature of this release. Methods. The raw data collected by Gaia during the first 14 months of the mission have been processed by the Gaia Data Processing and Analysis Consortium (DPAC) and turned into an astrometric and photometric catalogue. Results. Gaia DR1 consists of three components: a primary astrometric data set which contains the positions, parallaxes, and mean proper motions for about 2 million of the brightest stars in common with the Hipparcos and Tycho-2 catalogues - a realisation of the Tycho-Gaia Astrometric Solution (TGAS) - and a secondary astrometric data set containing the positions for an additional 1.1 billion sources. The second component is the photometric data set, consisting of mean G-band magnitudes for all sources. The G-band light curves and the characteristics of ∼3000 Cepheid and RR Lyrae stars, observed at high cadence around the south ecliptic pole, form the third component. For the primary astrometric data set the typical uncertainty is about 0.3 mas for the positions and parallaxes, and about 1 mas yr<sup>-1</sup> for the proper motions. A systematic component of ∼0.3 mas should be added to the parallax uncertainties. For the subset of ∼94 000 Hipparcos stars in the primary data set, the proper motions are much more precise at about 0.06 mas yr<sup>-1</sup>. For the secondary astrometric data set, the typical uncertainty of the positions is ∼10 mas. The median uncertainties on the mean G-band magnitudes range from the mmag level to ∼0.03 mag over the magnitude range 5 to 20.7. Conclusions. Gaia DR1 is an important milestone ahead of the next Gaia data release, which will feature five-parameter astrometry for all sources. Extensive validation shows that Gaia DR1 represents a major advance in the mapping of the heavens and the availability of basic stellar data that underpin observational astrophysics. Nevertheless, the very preliminary nature of this first Gaia data release does lead to a number of important limitations to the data quality which should be carefully considered before drawing conclusions from the data.</p>},
  articleno    = {A2},
  author       = {Brown, A. G A and Vallenari, A. and Prusti, T. and De Bruijne, J. H J and Mignard, F. and Drimmel, R. and Babusiaux, C. and Bailer-Jones, C. A L and Bastian, U. and Biermann, M. and Evans, D. W. and Eyer, L. and Jansen, F. and Jordi, C. and Katz, D. and Klioner, S. A. and Lammers, U. and Lindegren, L. and Luri, X. and O'Mullane, W. and Panem, C. and Pourbaix, D. and Randich, S. and Sartoretti, P. and Siddiqui, H. I. and Soubiran, C. and Valette, V. and Van Leeuwen, F. and Walton, N. A. and Aerts, C. and Arenou, F. and Cropper, M. and Høg, E. and Lattanzi, M. G. and Grebel, E. K. and Holland, A. D. and Huc, C. and Passot, X. and Perryman, M. and Bramante, L. and Cacciari, C. and Castañeda, J. and Chaoul, L. and Cheek, N. and De Angeli, F. and Fabricius, C. and Guerra, R. and Hernández, J. and Jean-Antoine-Piccolo, A. and Masana, E. and Messineo, R. and Mowlavi, N. and Nienartowicz, K. and Ordóñez-Blanco, D. and Panuzzo, P. and Portell, J. and Richards, P. J. and Riello, M. and Seabroke, G. M. and Tanga, P. and Thévenin, F. and Torra, J. and Els, S. G. and Gracia-Abril, G. and Comoretto, G. and Garcia-Reinaldos, M. and Lock, T. and Mercier, E. and Altmann, M. and Andrae, R. and Astraatmadja, T. L. and Bellas-Velidis, I. and Benson, K. and Berthier, J. and Blomme, R. and Busso, G. and Carry, B. and Cellino, A. and Clementini, G. and Cowell, S. and Creevey, O. and Cuypers, J. and Davidson, M. and De Ridder, J. and De Torres, A. and Delchambre, L. and Dell'Oro, A. and Ducourant, C. and Frémat, Y. and García-Torres, M. and Gosset, E. and Halbwachs, J. L. and Hambly, N. C. and Harrison, D. L. and Hauser, M. and Hestroffer, D. and Hodgkin, S. T. and Huckle, H. E. and Hutton, A. and Jasniewicz, G. and Jordan, S. and Kontizas, M. and Korn, A. J. and Lanzafame, A. C. and Manteiga, M. and Moitinho, A. and Muinonen, K. and Osinde, J. and Pancino, E. and Pauwels, T. and Petit, J. M. and Recio-Blanco, A. and Robin, A. C. and Sarro, L. M. and Siopis, C. and Smith, M. and Smith, K. W. and Sozzetti, A. and Thuillot, W. and Van Reeven, W. and Viala, Y. and Abbas, U. and Abreu Aramburu, A. and Accart, S. and Aguado, J. J. and Allan, P. M. and Allasia, W. and Altavilla, G. and Álvarez, M. A. and Alves, J. and Anderson, R. I. and Andrei, A. H. and Anglada Varela, E. and Antiche, E. and Antoja, T. and Antón, S. and Arcay, B. and Bach, N. and Baker, S. G. and Balaguer-Núñez, L. and Barache, C. and Barata, C. and Barbier, A. and Barblan, F. and Barrado Y Navascués, D. and Barros, M. and Barstow, M. A. and Becciani, U. and Bellazzini, M. and Bello García, A. and Belokurov, V. and Bendjoya, P. and Berihuete, A. and Bianchi, L. and Bienaymé, O. and Billebaud, F. and Blagorodnova, N. and Blanco-Cuaresma, S. and Boch, T. and Bombrun, A. and Borrachero, R. and Bouquillon, S. and Bourda, G. and Bouy, H. and Bragaglia, A. and Breddels, M. A. and Brouillet, N. and Brüsemeister, T. and Bucciarelli, B. and Burgess, P. and Burgon, R. and Burlacu, A. and Busonero, D. and Buzzi, R. and Caffau, E. and Cambras, J. and Campbell, H. and Cancelliere, R. and Cantat-Gaudin, T. and Carlucci, T. and Carrasco, J. M. and Castellani, M. and Charlot, P. and Charnas, J. and Chiavassa, A. and Clotet, M. and Cocozza, G. and Collins, R. S. and Costigan, G. and Crifo, F. and Cross, N. J G and Crosta, M. and Crowley, C. and Dafonte, C. and Damerdji, Y. and Dapergolas, A. and David, P. and David, M. and De Cat, P. and De Felice, F. and De Laverny, P. and De Luise, F. and De March, R. and De Martino, D. and De Souza, R. and Debosscher, J. and Del Pozo, E. and Delbo, M. and Delgado, A. and Delgado, H. E. and Di Matteo, P. and Diakite, S. and Distefano, E. and Dolding, C. and Dos Anjos, S. and Drazinos, P. and Duran, J. and Dzigan, Y. and Edvardsson, B. and Enke, H. and Evans, N. W. and Eynard Bontemps, G. and Fabre, C. and Fabrizio, M. and Faigler, S. and Falcão, A. J. and Farràs Casas, M. and Federici, L. and Fedorets, G. and Fernández-Hernández, J. and Fernique, P. and Fienga, A. and Figueras, F. and Filippi, F. and Findeisen, K. and Fonti, A. and Fouesneau, M. and Fraile, E. and Fraser, M. and Fuchs, J. and Gai, M. and Galleti, S. and Galluccio, L. and Garabato, D. and García-Sedano, F. and Garofalo, A. and Garralda, N. and Gavras, P. and Gerssen, J. and Geyer, R. and Gilmore, G. and Girona, S. and Giuffrida, G. and Gomes, M. and González-Marcos, A. and González-Núñez, J. and González-Vidal, J. J. and Granvik, M. and Guerrier, A. and Guillout, P. and Guiraud, J. and Gúrpide, A. and Gutiérrez-Sánchez, R. and Guy, L. P. and Haigron, R. and Hatzidimitriou, D. and Haywood, M. and Heiter, U. and Helmi, A. and Hobbs, D. and Hofmann, W. and Holl, B. and Holland, G. and Hunt, J. A S and Hypki, A. and Icardi, V. and Irwin, M. and Jevardat De Fombelle, G. and Jofré, P. and Jonker, P. G. and Jorissen, A. and Julbe, F. and Karampelas, A. and Kochoska, A. and Kohley, R. and Kolenberg, K. and Kontizas, E. and Koposov, S. E. and Kordopatis, G. and Koubsky, P. and Krone-Martins, A. and Kudryashova, M. and Kull, I. and Bachchan, R. K. and Lacoste-Seris, F. and Lanza, A. F. and Lavigne, J. B. and Le Poncin-Lafitte, C. and Lebreton, Y. and Lebzelter, T. and Leccia, S. and Leclerc, N. and Lecoeur-Taibi, I. and Lemaitre, V. and Lenhardt, H. and Leroux, F. and Liao, S. and Licata, E. and Lindstrøm, H. E P and Lister, T. A. and Livanou, E. and Lobel, A. and Löffler, W. and López, M. and Lorenz, D. and MacDonald, I. and Magalhães Fernandes, T. and Managau, S. and Mann, R. G. and Mantelet, G. and Marchal, O. and Marchant, J. M. and Marconi, M. and Marinoni, S. and Marrese, P. M. and Marschalkó, G. and Marshall, D. J. and Martín-Fleitas, J. M. and Martino, M. and Mary, N. and Matijevič, G. and Mazeh, T. and McMillan, P. J. and Messina, S. and Michalik, D. and Millar, N. R. and Miranda, B. M H and Molina, D. and Molinaro, R. and Molinaro, M. and Molnár, L. and Moniez, M. and Montegriffo, P. and Mor, R. and Mora, A. and Morbidelli, R. and Morel, T. and Morgenthaler, S. and Morris, D. and Mulone, A. F. and Muraveva, T. and Musella, I. and Narbonne, J. and Nelemans, G. and Nicastro, L. and Noval, L. and Ordénovic, C. and Ordieres-Meré, J. and Osborne, P. and Pagani, C. and Pagano, I. and Pailler, F. and Palacin, H. and Palaversa, L. and Parsons, P. and Pecoraro, M. and Pedrosa, R. and Pentikäinen, H. and Pichon, B. and Piersimoni, A. M. and Pineau, F. X. and Plachy, E. and Plum, G. and Poujoulet, E. and Prša, A. and Pulone, L. and Ragaini, S. and Rago, S. and Rambaux, N. and Ramos-Lerate, M. and Ranalli, P. and Rauw, G. and Read, A. and Regibo, S. and Reylé, C. and Ribeiro, R. A. and Rimoldini, L. and Ripepi, V. and Riva, A. and Rixon, G. and Roelens, M. and Romero-Gómez, M. and Rowell, N. and Royer, F. and Ruiz-Dern, L. and Sadowski, G. and Sagristà Sellés, T. and Sahlmann, J. and Salgado, J. and Salguero, E. and Sarasso, M. and Savietto, H. and Schultheis, M. and Sciacca, E. and Segol, M. and Segovia, J. C. and Segransan, D. and Shih, I. C. and Smareglia, R. and Smart, R. L. and Solano, E. and Solitro, F. and Sordo, R. and Soria Nieto, S. and Souchay, J. and Spagna, A. and Spoto, F. and Stampa, U. and Steele, I. A. and Steidelmüller, H. and Stephenson, C. A. and Stoev, H. and Suess, F. F. and Süveges, M. and Surdej, J. and Szabados, L. and Szegedi-Elek, E. and Tapiador, D. and Taris, F. and Tauran, G. and Taylor, M. B. and Teixeira, R. and Terrett, D. and Tingley, B. and Trager, S. C. and Turon, C. and Ulla, A. and Utrilla, E. and Valentini, G. and Van Elteren, A. and Van Hemelryck, E. and Van Leeuwen, M. and Varadi, M. and Vecchiato, A. and Veljanoski, J. and Via, T. and Vicente, D. and Vogt, S. and Voss, H. and Votruba, V. and Voutsinas, S. and Walmsley, G. and Weiler, M. and Weingrill, K. and Wevers, T. and Wyrzykowski,  and Yoldas, A. and Žerjal, M. and Zucker, S. and Zurbach, C. and Zwitter, T. and Alecu, A. and Allen, M. and Allende Prieto, C. and Amorim, A. and Anglada-Escudé, G. and Arsenijevic, V. and Azaz, S. and Balm, P. and Beck, M. and Bernstein, H. H. and Bigot, L. and Bijaoui, A. and Blasco, C. and Bonfigli, M. and Bono, G. and Boudreault, S. and Bressan, A. and Brown, S. and Brunet, P. M. and Bunclark, P. and Buonanno, R. and Butkevich, A. G. and Carret, C. and Carrion, C. and Chemin, L. and Chéreau, F. and Corcione, L. and Darmigny, E. and De Boer, K. S. and De Teodoro, P. and De Zeeuw, P. T. and Delle Luche, C. and Domingues, C. D. and Dubath, P. and Fodor, F. and Frézouls, B. and Fries, A. and Fustes, D. and Fyfe, D. and Gallardo, E. and Gallegos, J. and Gardiol, D. and Gebran, M. and Gomboc, A. and Gómez, A. and Grux, E. and Gueguen, A. and Heyrovsky, A. and Hoar, J. and Iannicola, G. and Isasi Parache, Y. and Janotto, A. M. and Joliet, E. and Jonckheere, A. and Keil, R. and Kim, D. W. and Klagyivik, P. and Klar, J. and Knude, J. and Kochukhov, O. and Kolka, I. and Kos, J. and Kutka, A. and Lainey, V. and LeBouquin, D. and Liu, C. and Loreggia, D. and Makarov, V. V. and Marseille, M. G. and Martayan, C. and Martinez-Rubi, O. and Massart, B. and Meynadier, F. and Mignot, S. and Munari, U. and Nguyen, A. T. and Nordlander, T. and Ocvirk, P. and O'Flaherty, K. S. and Olias Sanz, A. and Ortiz, P. and Osorio, J. and Oszkiewicz, D. and Ouzounis, A. and Palmer, M. and Park, P. and Pasquato, E. and Peltzer, C. and Peralta, J. and Péturaud, F. and Pieniluoma, T. and Pigozzi, E. and Poels, J. and Prat, G. and Prod'homme, T. and Raison, F. and Rebordao, J. M. and Risquez, D. and Rocca-Volmerange, B. and Rosen, S. and Ruiz-Fuertes, M. I. and Russo, F. and Sembay, S. and Serraller Vizcaino, I. and Short, A. and Siebert, A. and Silva, H. and Sinachopoulos, D. and Slezak, E. and Soffel, M. and Sosnowska, D. and Straižys, V. and Ter Linden, M. and Terrell, D. and Theil, S. and Tiede, C. and Troisi, L. and Tsalmantza, P. and Tur, D. and Vaccari, M. and Vachier, F. and Valles, P. and Van Hamme, W. and Veltz, L. and Virtanen, J. and Wallut, J. M. and Wichmann, R. and Wilkinson, M. I. and Ziaeepour, H. and Zschocke, S.},
  issn         = {0004-6361},
  keyword      = {Astrometry,Catalogs,Parallaxes,Proper motions,Surveys},
  language     = {eng},
  month        = {11},
  publisher    = {EDP Sciences},
  series       = {Astronomy and Astrophysics},
  title        = {Gaia Data Release 1 : Summary of the astrometric, photometric, and survey properties},
  url          = {http://dx.doi.org/10.1051/0004-6361/201629512},
  volume       = {595},
  year         = {2016},
}