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

Brown, A. G. A. and Joliet, E. (2016) Gaia Data Release 1: Summary of the astrometric, photometric, and survey properties. Astronomy and Astrophysics, 595 . Art. No. A2. ISSN 0004-6361. doi:10.1051/0004-6361/201629512. https://resolver.caltech.edu/CaltechAUTHORS:20170113-092650198

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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 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.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1051/0004-6361/201629512DOIArticle
http://www.aanda.org/articles/aa/full_html/2016/11/aa29512-16/aa29512-16.html#absPublisherArticle
https://arxiv.org/abs/1609.04172arXivDiscussion Paper
Additional Information:© 2016 ESO. Received: 10 August 2016 Accepted: 31 August 2016 Published online 24 November 2016 This work has made use of results from the European Space Agency (ESA) space mission Gaia, the data from which were processed by the Gaia Data Processing and Analysis Consortium (DPAC). Funding for the DPAC has been provided by national institutions, in particular the institutions participating in the Gaia Multilateral Agreement. The Gaia mission website is http://www.cosmos.esa.int/gaia. The authors are current or past members of the ESA Gaia mission team and of the Gaia DPAC. This work has received financial supported from the Algerian Centre de Recherche en Astronomie, Astrophysique et Géophysique of Bouzareah Observatory; the Austrian FWF Hertha Firnberg Programme through grants T359, P20046, and P23737; the BELgian federal Science Policy Office (BELSPO) through various PROgramme de Développement d’EXpériences scientifiques (PRODEX) grants; the Brazil-France exchange programmes FAPESP-COFECUB and CAPES-COFECUB; the Chinese National Science Foundation through grant NSFC 11573054; the Czech-Republic Ministry of Education, Youth, and Sports through grant L.G. 15010; the Danish Ministry of Science; the Estonian Ministry of Education and Research through grant IUT40-1; the European Commission’s Sixth Framework Programme through the European Leadership in Space Astrometry (ELSA) Marie Curie Research Training Network (MRTN-CT-2006-033481), through Marie Curie project PIOF-GA-2009-255267 (SAS-RRL), and through a Marie Curie Transfer-of-Knowledge (ToK) fellowship (MTKD-CT-2004-014188); the European Commission’s Seventh Framework Programme through grant FP7-606740 (FP7-SPACE-2013-1) for the Gaia European Network for Improved data User Services (GENIUS) and through grant 264895 for the Gaia Research for European Astronomy Training (GREAT-ITN) network; the European Research Council (ERC) through grant 320360 and through the European Union’s Horizon 2020 research and innovation programme through grant agreement 670519 (Mixing and Angular Momentum tranSport of massIvE stars – MAMSIE); the European Science Foundation (ESF), in the framework of the Gaia Research for European Astronomy Training Research Network Programme (GREAT-ESF); the European Space Agency in the framework of the Gaia project; the European Space Agency Plan for European Cooperating States (PECS) programme through grants for Slovenia; the Czech Space Office through ESA PECS contract 98058; the Academy of Finland; the Magnus Ehrnrooth Foundation; the French Centre National de la Recherche Scientifique (CNRS) through action “Défi MASTODONS”; the French Centre National d’Études Spatiales (CNES); the French Agence Nationale de la Recherche (ANR) “investissements d’avenir” Initiatives D’EXcellence (IDEX) programme PSL∗ through grant ANR-10-IDEX-0001-02; the Région Aquitaine; the Université de Bordeaux; the French Utinam Institute of the Université de Franche-Comté, supported by the Région de Franche-Comté and the Institut des Sciences de l’Univers (INSU); the German Aerospace Agency (Deutsches Zentrum für Luft- und Raumfahrt e.V., DLR) through grants 50QG0501, 50QG0601, 50QG0602, 50QG0701, 50QG0901, 50QG1001, 50QG1101, 50QG140, 50QG1401, 50QG1402, and 50QG1404; the Hungarian Academy of Sciences through Lendület Programme LP2014-17; the Hungarian National Research, Development, and Innovation Office through grants NKFIH K-115709 and PD-116175; the Israel Ministry of Science and Technology through grant 3-9082; the Agenzia Spaziale Italiana (ASI) through grants I/037/08/0, I/058/10/0, 2014-025-R.0, and 2014-025-R.1.2015 to INAF and contracts I/008/10/0 and 2013/030/I.0 to ALTEC S.p.A.; the Italian Istituto Nazionale di Astrofisica (INAF); the Netherlands Organisation for Scientific Research (NWO) through grant NWO-M-614.061.414 and through a VICI grant to A. Helmi; the Netherlands Research School for Astronomy (NOVA); the Polish National Science Centre through HARMONIA grant 2015/18/M/ST9/00544; the Portugese Fundação para a Ciência e a Tecnologia (FCT) through grants PTDC/CTE-SPA/118692/2010, PDCTE/CTE-AST/81711/2003, and SFRH/BPD/74697/2010; the Strategic Programmes PEst-OE/AMB/UI4006/2011 for SIM, UID/FIS/00099/2013 for CENTRA, and UID/EEA/00066/2013 for UNINOVA; the Slovenian Research Agency; the Spanish Ministry of Economy MINECO-FEDER through grants AyA2014-55216, AyA2011-24052, ESP2013-48318-C2-R, and ESP2014-55996-C2-R and MDM-2014-0369 of ICCUB (Unidad de Excelencia María de Maeztu); the Swedish National Space Board (SNSB/Rymdstyrelsen); the Swiss State Secretariat for Education, Research, and Innovation through the ESA PRODEX programme, the Mesures d’Accompagnement, and the Activités Nationales Complémentaires; the Swiss National Science Foundation, including an Early Postdoc.Mobility fellowship; the United Kingdom Rutherford Appleton Laboratory; the United Kingdom Science and Technology Facilities Council (STFC) through grants PP/C506756/1 and ST/I00047X/1; and the United Kingdom Space Agency (UKSA) through grants ST/K000578/1 and ST/N000978/1. We acknowledge the valuable advice provided by Vincenzo Innocente (CERN) during two pre-launch reviews of DPAC. This research has made use of the Set of Identifications, Measurements, and Bibliography for Astronomical Data (Wenger et al. 2000) and of the “Aladin sky atlas” (Bonnarel et al. 2000; Boch & Fernique 2014), which are developed and operated at Centre de Données astronomiques de Strasbourg (CDS), France. Some of the figures in this paper were made with TOPCAT (http://www.starlink.ac.uk/topcat/) or through the use of the STIL library (http://www.starlink.ac.uk/stil). This research made use of the AAVSO Photometric All-Sky Survey (APASS, https://www.aavso.org/apass), funded by the Robert Martin Ayers Sciences Fund. This publication made use of data products from the Two Micron All Sky Survey, which is a joint project of the University of Massachusetts and the Infrared Processing and Analysis Center/California Institute of Technology, funded by the National Aeronautics and Space Administration and the National Science Foundation. We thank the anonymous referee for suggestions that helped improve this paper.
Funders:
Funding AgencyGrant Number
Bouzareah Observatory Algerian Centre de Recherche en Astronomie, Astrophysique et GéophysiqueUNSPECIFIED
FWF Der WissenschaftsfondsT359
FWF Der WissenschaftsfondsP20046
FWF Der WissenschaftsfondsP23737
Belgian Federal Science Policy Office (BELSPO)UNSPECIFIED
PRODEXUNSPECIFIED
FAPESP-COFECUB French-Brazilian Exchange ProgramUNSPECIFIED
CAPES-COFECUB French-Brazilian Exchange ProgramUNSPECIFIED
Chinese National Science FoundationNSFC 11573054
Ministry of Education, Youth and Sports of the Czech Republic15010
Danish Ministry of ScienceUNSPECIFIED
Estonian Ministry of Education and ResearchIUT40-1
Marie Curie Research Training Network - European Leadership in Space Astrometry (ELSA)MRTN-CT-2006-033481
Marie Curie projectPIOF-GA-2009-255267
Marie Curie Transfer-of-Knowledge (ToK) fellowshipMTKD-CT-2004-014188
European Commission’s Seventh Framework ProgrammeFP7-606740
GENIUS264895
European Research Council (ERC)320360
European Union’s Horizon 2020 research and innovation programme670519
Mixing and Angular Momentum tranSport of massIvE stars (MAMSIE)UNSPECIFIED
European Science Foundation (ESF)UNSPECIFIED
Gaia Research for European Astronomy Training Research Network Programme (GREAT-ESF)UNSPECIFIED
European Space Agency (ESA)UNSPECIFIED
European Space Agency Plan for European Cooperating States (PECS) programmeUNSPECIFIED
Czech Space Office through ESA PECS98058
Academy of FinlandUNSPECIFIED
Magnus Ehrnrooth FoundationUNSPECIFIED
French Centre National de la Recherche Scientifique (CNRS)UNSPECIFIED
French Centre National d’Études Spatiales (CNES)UNSPECIFIED
French Agence Nationale de la Recherche (ANR)UNSPECIFIED
Initiatives D’EXcellence (IDEX) programme PSLANR-10-IDEX-0001-02
Région AquitaineUNSPECIFIED
Université de BordeauxUNSPECIFIED
Région de Franche-Comté and the Institut des Sciences de l’Univers (INSU)UNSPECIFIED
Deutsches Zentrum für Luft- und Raumfahrt (DLR)50QG0501
Deutsches Zentrum für Luft- und Raumfahrt (DLR)50QG0601
Deutsches Zentrum für Luft- und Raumfahrt (DLR)50QG0602
Deutsches Zentrum für Luft- und Raumfahrt (DLR)50QG0701
Deutsches Zentrum für Luft- und Raumfahrt (DLR)50QG0901
Deutsches Zentrum für Luft- und Raumfahrt (DLR)50QG1001
Deutsches Zentrum für Luft- und Raumfahrt (DLR)50QG1101
Deutsches Zentrum für Luft- und Raumfahrt (DLR)50QG140
Deutsches Zentrum für Luft- und Raumfahrt (DLR)50QG1401
Deutsches Zentrum für Luft- und Raumfahrt (DLR)50QG1402
Deutsches Zentrum für Luft- und Raumfahrt (DLR)50QG1404
Hungarian Academy of Sciences through Lendület ProgrammeLP2014-17
Hungarian National Research, Development, and Innovation OfficeNKFIH
Hungarian National Research, Development, and Innovation OfficeK-115709
Hungarian National Research, Development, and Innovation OfficePD-116175
Israel Ministry of Science and Technology3-9082
Agenzia Spaziale Italiana (ASI)I/037/08/0
Agenzia Spaziale Italiana (ASI)I/058/10/0
Agenzia Spaziale Italiana (ASI)2014-025-R.0
Agenzia Spaziale Italiana (ASI)2014-025-R.1.2015
Agenzia Spaziale Italiana (ASI)I/008/10/0
Agenzia Spaziale Italiana (ASI)2013/030/I.0
Italian Istituto Nazionale di Astrofisica (INAF)UNSPECIFIED
Netherlands Organisation for Scientific Research (NWO)NWO-M-614.061.414
Netherlands Research School for Astronomy (NOVA)UNSPECIFIED
Polish National Science Centre through HARMONIA2015/18/M/ST9/00544
Fundação para a Ciência e a Tecnologia (FCT)PTDC/CTE-SPA/118692/2010
Fundação para a Ciência e a Tecnologia (FCT)PDCTE/CTE-AST/81711/2003
Fundação para a Ciência e a Tecnologia (FCT)SFRH/BPD/74697/2010
Fundação para a Ciência e a Tecnologia (FCT)PEst-OE/AMB/UI4006/2011
Fundação para a Ciência e a Tecnologia (FCT)UID/FIS/00099/2013
Fundação para a Ciência e a Tecnologia (FCT)UID/EEA/00066/2013
Slovenian Research AgencyUNSPECIFIED
Spanish Ministry of Economy MINECO-FEDERAyA2014-55216
Spanish Ministry of Economy MINECO-FEDERAyA2011-24052
Spanish Ministry of Economy MINECO-FEDERESP2013-48318-C2-R
Spanish Ministry of Economy MINECO-FEDERESP2014-55996-C2-R
Spanish Ministry of Economy MINECO-FEDERMDM-2014-0369
Swedish National Space Board (SNSB)UNSPECIFIED
Swiss State Secretariat for Education, Research, and Innovation through the ESA PRODEX programmeUNSPECIFIED
Mesures d’Accompagnement, and the Activités Nationales ComplémentairesUNSPECIFIED
Swiss National Science FoundationUNSPECIFIED
Rutherford Appleton LaboratoryUNSPECIFIED
Science and Technology Facilities Council (STFC) (UK)PP/C506756/1
Science and Technology Facilities Council (STFC) (UK)ST/I00047X/1
United Kingdom Space Agency (UKSA)ST/K000578/1
United Kingdom Space Agency (UKSA)ST/N000978/1
Subject Keywords:catalogs, astrometry, parallaxes, proper motions, surveys
DOI:10.1051/0004-6361/201629512
Record Number:CaltechAUTHORS:20170113-092650198
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20170113-092650198
Official Citation:Gaia Data Release 1 - Summary of the astrometric, photometric, and survey properties A2 Gaia Collaboration, A. G. A. Brown, A. Vallenari, T. Prusti, J. H.J. de Bruijne, F. Mignard, R. Drimmel, C. Babusiaux, C. A.L. Bailer-Jones, U. Bastian et al. (582 more) Published online: 24 November 2016 DOI: http://dx.doi.org/10.1051/0004-6361/201629512
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:73483
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:18 Jan 2017 21:49
Last Modified:11 Nov 2021 05:17

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