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

被引：899

作者：

Brown, A. G. A. ^{[1
]}

Vallenari, A. ^{[2
]}

Prusti, T. ^{[3
]}

de Bruijne, J. H. J. ^{[3
]}

Mignard, F. ^{[4
]}

Drimmel, R. ^{[5
]}

Babusiaux, C. ^{[6
]}

Bailer-Jones, C. A. L. ^{[7
]}

Bastian, U. ^{[8
]}

Biermann, M. ^{[8
]}

Evans, D. W. ^{[9
]}

Eyer, L. ^{[10
]}

Jansen, F. ^{[11
]}

Jordi, C. ^{[12
]}

Katz, D. ^{[6
]}

Klioner, S. A. ^{[13
]}

Lammers, U. ^{[14
]}

Lindegren, L. ^{[15
]}

Luri, X. ^{[12
]}

O'Mullane, W. ^{[14
]}

Panem, C. ^{[16
]}

Pourbaix, D. ^{[17
,18
]}

Randich, S. ^{[19
]}

Sartoretti, P. ^{[6
]}

Siddiqui, H. I. ^{[20
]}

Soubiran, C. ^{[21
]}

Valette, V. ^{[16
]}

van Leeuwen, F. ^{[9
]}

Walton, N. A. ^{[9
]}

Aerts, C. ^{[22
,23
]}

Arenou, F. ^{[6
]}

Cropper, M. ^{[24
]}

Hog, E. ^{[25
]}

Lattanzi, M. G. ^{[5
]}

Grebel, E. K. ^{[8
]}

Holland, A. D. ^{[26
]}

Huc, C. ^{[16
]}

Passot, X. ^{[16
]}

Perryman, M. ^{[3
]}

Bramante, L. ^{[27
]}

Cacciari, C. ^{[28
]}

Castaneda, J. ^{[12
]}

Chaoul, L. ^{[16
]}

Cheek, N. ^{[29
]}

De Angeli, F. ^{[9
]}

Fabricius, C. ^{[12
]}

Guerra, R. ^{[14
]}

Hernandez, J. ^{[14
]}

Jean-Antoine-Piccolo, A. ^{[16
]}

Masana, E. ^{[12
]}

机构：

[1] Leiden Univ, Leiden Observ, Niels Bohrweg 2, NL-2333 CA Leiden, Netherlands

[2] Osserv Astron Padova, INAF, Vicolo Osservatorio 5, I-35122 Padua, Italy

[3] European Space Res & Technol Ctr ESA ESTEC, Directorate Sci, Sci Support Off, Keplerlaan 1, NL-2201AZ Noordwijk, Netherlands

[4] Univ Nice Sophia Antipolis, Lab Lagrange, Observ Cote dAzur, CNRS, CS 34229, F-06304 Nice, France

[5] Osserv Astron Torino, INAF, Via Osservatorio 20, I-10025 Pino Torinese, TO, Italy

[6] Univ Paris Diderot, PSL Res Univ, CNRS, GEPI,Observ Paris,Sorbonne Paris Cite, 5 Pl Jules Janssen, F-92190 Meudon, France

[7] Max Planck Inst Astron, Konigstuhl 17, D-69117 Heidelberg, Germany

[8] Heidelberg Univ, Astron Rechen Inst, Zentrum Astron, Monchhofstr 12-14, D-69120 Heidelberg, Germany

[9] Univ Cambridge, Inst Astron, Madingley Rd, Cambridge CB3 0HA, England

[10] Univ Geneva, Dept Astron, Chemin Maillettes 51, CH-1290 Versoix, Switzerland

[11] European Space Res & Technol Ctr ESA ESTEC, Directorate Sci, Operat Dept, Mission Operat Div, Keplerlaan 1, NL-2201 AZ Noordwijk, Netherlands

[12] Univ Barcelona, Inst Ciencies Cosmos, IEEC UB, Marti Franques 1, E-08028 Barcelona, Spain

[13] Tech Univ Dresden, Lohrmann Observ, Mommsenstr 13, D-01062 Dresden, Germany

[14] European Space Astron Ctr ESA ESAC, Camino Bajo dell Castillo S-N, Madrid 28692, Spain

[15] Lund Univ, Dept Astron & Theoret Phys, Lund Observ, Box 43, S-22100 Lund, Sweden

[16] CNES Ctr Spatial Toulouse, 18 Ave Edouard Belin, F-31401 Toulouse 9, France

[17] Univ Libre Bruxelles, Inst Astron & Astrophys, CP 226,Blvd Triomphe, B-1050 Brussels, Belgium

[18] FRS FNRS, Rue Egmont 5, B-1000 Brussels, Belgium

[19] Osserv Astrofis Arcetri, INAF, Largo Enrico Fermi 5, I-50125 Florence, Italy

[20] Telespazio Vega UK Ltd, ESA ESAC, Camino Bajo del Castillo, Madrid 28692, Spain

[21] Univ Bordeaux, Lab Astrophys Bordeaux, CNRS, B18N,Allee Geoffroy St Hilaire, F-33615 Pessac, France

[22] Katholieke Univ Leuven, Inst Sterrenkunde, Celestijnenlaan 200D, B-3001 Leuven, Belgium

[23] Radboud Univ Nijmegen, IMAPP, Dept Astrophys, POB 9010, NL-6500 GL Nijmegen, Netherlands

[24] Univ Coll London, Mullard Space Sci Lab, Surrey RH5 6NT, England

[25] Univ Copenhagen, Niels Bohr Inst, Juliane Maries Vej 30, DK-2100 Copenhagen O, Denmark

[26] Open Univ, Dept Phys Sci, Ctr Elect Imaging, Walton Hall, Milton Keynes MK7 6AA, Bucks, England

[27] ALTEC Spa, Corso Marche 79, I-10146 Turin, Italy

[28] Osservatorio Astron Bologna, INAF, Via Ranzani 1, I-40127 Bologna, Italy

[29] Serco Gest Negocios ESA ESAC, Camino Bajo del Castillo S-N, Madrid 28692, Spain

[30] Univ Geneva, Dept Astron, Chemin Ecogia 16, CH-1290 Versoix, Switzerland

[31] Rutherford Appleton Lab, STFC, Didcot OX11 0QX, Oxon, England

[32] ESAC, Gaia DPAC Project Off, Camino Bajo del Castillo S-N, Madrid 28692, Spain

[33] UPMC Univ Paris 06, PSL Res Univ, CNRS, SYRTE,Observ Paris,Sorbonne Univ,LNE, 61 Ave Observ, F-75014 Paris, France

[34] Natl Observ Athens, Athens 15236, Greece

[35] UPMC Univ Paris 06, PSL Res Univ, IMCCE, Observ Paris,CNRS,Sorbonne Univ,Univ Lille, 77 Av Denfert Rochereau, F-75014 Paris, France

[36] Royal Observ Belgium, Ringlaan 3, B-1180 Brussels, Belgium

[37] Univ Paris XI, CNRS, Inst Astrophys Spatiale, UMR 8617, Batiment 121, F-91405 Orsay, France

[38] Univ Edinburgh, Royal Observ, Inst Astron, Blackford Hill, Edinburgh EH9 3HJ, Midlothian, Scotland

[39] ESA ESAC, HE Space Operat BV, Camino Bajo del Castillo S-N, Madrid 28692, Spain

[40] Univ Liege, Inst Astrophys & Geophys, 19c,Allee 6 Aout, B-4000 Liege, Belgium

[41] Univ Pablo de Olavide, Area Lenguajes & Sistemas Informat, Ctra Utrera,Km 1, Seville 41013, Spain

[42] Univ Strasbourg, Observ Astron Strasbourg, CNRS, UMR 7550, 11 Rue Univ, F-67000 Strasbourg, France

[43] Univ Cambridge, Kavli Inst Cosmol, Madingley Rd, Cambridge CB3 0HA, England

[44] ESA ESAC, Aurora Technol, Camino Bajo del Castillo S-N, Madrid 28692, Spain

[45] Univ Montpellier, Lab Univers & Particules Montpellier, Pl Eugene Bataillon,CC72, F-34095 Montpellier 05, France

[46] Natl & Kapodistrian Univ Athens, Dept Astrophys Astron & Mech, Athens 15783, Greece

[47] Uppsala Univ, Div Astron & Space Phys, Dept Phys & Astron, Box 516, S-75120 Uppsala, Sweden

[48] Univ Catania, Dipartimento Fis & Astron, Sez Astrofis, Via S Sofia 78, I-95123 Catania, Italy

[49] Osserv Astrofis Catania, INAF, Via S Sofia 78, I-95123 Catania, Italy

[50] Univ A Coruna, Fac Informat, Campus Elvina S-N, La Coruna 15071, Spain

来源：

ASTRONOMY & ASTROPHYSICS | 2016年 / 595卷

基金：

巴西圣保罗研究基金会; 美国国家航空航天局; 瑞士国家科学基金会; 欧洲研究理事会; 芬兰科学院; 美国国家科学基金会; 英国科学技术设施理事会;

关键词：

catalogs; astrometry; parallaxes; proper motions; surveys; SKY SURVEY; ALL-SKY; PARALLAXES;

D O I：

10.1051/0004-6361/201629512

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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 similar to 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 similar to 0.3 mas should be added to the parallax uncertainties. For the subset of similar to 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 similar to 10 mas. The median uncertainties on the mean G-band magnitudes range from the mmag level to similar 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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页数：23

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