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Gaia Data Release 1: Astrometry - one billion positions, two million proper motions and parallaxes

dc.contributor.authorLINDEGREN, L.,
hal.structure.identifierAgence Spatiale Européenne = European Space Agency [ESA]
dc.contributor.authorLAMMERS, U.,
hal.structure.identifierZentrum für astronomie
dc.contributor.authorBASTIAN, U.,
hal.structure.identifierSolvay (France)
dc.contributor.authorHERNÁNDEZ, J.,
dc.contributor.authorKLIONER, S.,
dc.contributor.authorHOBBS, D.,
hal.structure.identifierUniversité Grenoble Alpes - UFR Langage, lettres et arts du spectacle, information et communication - Dpt Lettres et arts du spectacle [UGA UFR LLASIC LAS]
dc.contributor.authorBOMBRUN, A.,
dc.contributor.authorMICHALIK, D.,
dc.contributor.authorRAMOS-LERATE, M.,
dc.contributor.authorBUTKEVICH, A.,
dc.contributor.authorCOMORETTO, G.,
dc.contributor.authorJOLIET, E.,
hal.structure.identifierHeckscher-Klinikum
dc.contributor.authorHOLL, B.,
dc.contributor.authorHUTTON, A.,
dc.contributor.authorPARSONS, P.,
dc.contributor.authorSTEIDELMÜLLER, H.,
hal.structure.identifierAUTRES
dc.contributor.authorABBAS, U.,
hal.structure.identifierSystèmes de Référence Temps Espace [SYRTE]
dc.contributor.authorALTMANN, M.,
hal.structure.identifierARHEOINVEST
dc.contributor.authorANDREI, A.,
dc.contributor.authorANTON, S.,
hal.structure.identifierDepartment of Medicine
dc.contributor.authorBACH, N.,
hal.structure.identifierSystèmes de Référence Temps Espace [SYRTE]
dc.contributor.authorBARACHE, C.,
dc.contributor.authorBECCIANI, U.,
hal.structure.identifierInstitut de Mécanique Céleste et de Calcul des Ephémérides [IMCCE]
dc.contributor.authorBERTHIER, J.,
dc.contributor.authorBIANCHI, L.,
hal.structure.identifierDepartment of Clinical Medicine
hal.structure.identifierDepartment of nuclear medicine
dc.contributor.authorBIERMANN, M.,
hal.structure.identifierSystèmes de Référence Temps Espace [SYRTE]
dc.contributor.authorBOUQUILLON, S.,
hal.structure.identifierM2A 2016
dc.contributor.authorBOURDA, G.
dc.contributor.authorBRÜSEMEISTER, T.,
dc.contributor.authorBUCCIARELLI, B.,
dc.contributor.authorBUSONERO, D.,
hal.structure.identifierSystèmes de Référence Temps Espace [SYRTE]
dc.contributor.authorCARLUCCI, T.,
dc.contributor.authorCASTAÑEDA, J.,
hal.structure.identifierM2A 2016
dc.contributor.authorCHARLOT, P.
dc.contributor.authorCLOTET, M.,
dc.contributor.authorCROSTA, M.,
hal.structure.identifierOpen University of Israël
dc.contributor.authorDAVIDSON, M.,
dc.contributor.authorDE FELICE, F.,
dc.contributor.authorDRIMMEL, R.,
hal.structure.identifierNelson Mandela University [Port Elizabeth]
dc.contributor.authorFABRICIUS, C.,
hal.structure.identifierGéoazur [GEOAZUR 7329]
dc.contributor.authorFIENGA, A.,
hal.structure.identifierInstitut de recherches sur la catalyse et l'environnement de Lyon [IRCELYON]
dc.contributor.authorFIGUERAS, F.,
dc.contributor.authorFRAILE, E.,
hal.structure.identifierAstrometry
dc.contributor.authorGAI, M.,
dc.contributor.authorGARRALDA, N.,
dc.contributor.authorGEYER, R.,
dc.contributor.authorGONZÁLEZ-VIDAL, J. J.,
hal.structure.identifierLaboratorio de Inmunologıa y Virologıa
dc.contributor.authorGUERRA, R.,
dc.contributor.authorHAMBLY, N. C.,
hal.structure.identifierLaboratório de Ictiologia e Pesca
dc.contributor.authorHAUSER, M.,
hal.structure.identifierDepartment of Pathology and Cell Biology
dc.contributor.authorJORDAN, S.,
dc.contributor.authorLATTANZI, M. G.,
dc.contributor.authorLENHARDT, H.,
hal.structure.identifierChinese Academy of Sciences [Beijing] [CAS]
dc.contributor.authorLIAO, S.,
dc.contributor.authorLÖFFLER, W.,
dc.contributor.authorMCMILLAN, P. J.,
hal.structure.identifierJoseph Louis LAGRANGE [LAGRANGE]
dc.contributor.authorMIGNARD, F.,
hal.structure.identifierDepartment of Computer Architecture and Computer Technology
dc.contributor.authorMORA, A.,
dc.contributor.authorMORBIDELLI, R.,
dc.contributor.authorPORTELL, J.,
hal.structure.identifierLaboratoire Génome et Informatique
dc.contributor.authorRIVA, A.,
dc.contributor.authorSARASSO, M.,
dc.contributor.authorSERRALLER, I.,
hal.structure.identifierHuman Cancer Genetics Program
dc.contributor.authorSIDDIQUI, H.,
hal.structure.identifierINAF - Osservatorio Astrofisico di Torino [OATo]
dc.contributor.authorSMART, R.,
dc.contributor.authorSPAGNA, A.,
dc.contributor.authorSTAMPA, U.,
dc.contributor.authorSTEELE, I.,
hal.structure.identifierSystèmes de Référence Temps Espace [SYRTE]
dc.contributor.authorTARIS, F.,
dc.contributor.authorTORRA, J.,
dc.contributor.authorVAN REEVEN, W.,
hal.structure.identifierAstrometry
dc.contributor.authorVECCHIATO, A.,
hal.structure.identifierLohrmann Observatory
dc.contributor.authorZSCHOCKE, S.,
hal.structure.identifierGastroenterology and Hepatology
dc.contributor.authorDE BRUIJNE, J.,
dc.contributor.authorGRACIA, G.,
dc.contributor.authorRAISON, F.,
hal.structure.identifierBritish Geological Survey [BGS]
dc.contributor.authorLISTER, T.,
dc.contributor.authorMARCHANT, J.,
dc.contributor.authorMESSINEO, R.,
dc.contributor.authorSOFFEL, M.,
hal.structure.identifierUniversity of Las Palmas de Gran Canaria [ULPGC]
dc.contributor.authorOSORIO, J.,
dc.contributor.authorDE TORRES, A.,
dc.contributor.authorO'MULLANE, W.,
dc.date.issued2016-09
dc.identifier.issn0004-6361
dc.description.abstractEnGaia Data Release 1 (Gaia DR1) contains astrometric results for more than 1 billion stars brighter than magnitude 20.7 based on observations collected by the Gaia satellite during the first 14 months of its operational phase. We give a brief overview of the astrometric content of the data release and of the model assumptions, data processing, and validation of the results. For stars in common with the Hipparcos and Tycho-2 catalogues, complete astrometric single-star solutions are obtained by incorporating positional information from the earlier catalogues. For other stars only their positions are obtained by neglecting their proper motions and parallaxes. The results are validated by an analysis of the residuals, through special validation runs, and by comparison with external data. Results. For about two million of the brighter stars (down to magnitude ~11.5) we obtain positions, parallaxes, and proper motions to Hipparcos-type precision or better. For these stars, systematic errors depending e.g. on position and colour are at a level of 0.3 milliarcsecond (mas). For the remaining stars we obtain positions at epoch J2015.0 accurate to ~10 mas. Positions and proper motions are given in a reference frame that is aligned with the International Celestial Reference Frame (ICRF) to better than 0.1 mas at epoch J2015.0, and non-rotating with respect to ICRF to within 0.03 mas/yr. The Hipparcos reference frame is found to rotate with respect to the Gaia DR1 frame at a rate of 0.24 mas/yr. Based on less than a quarter of the nominal mission length and on very provisional and incomplete calibrations, the quality and completeness of the astrometric data in Gaia DR1 are far from what is expected for the final mission products. The results nevertheless represent a huge improvement in the available fundamental stellar data and practical definition of the optical reference frame.
dc.language.isoen
dc.publisherEDP Sciences
dc.subject.enAstrophysics - Instrumentation and Methods for Astrophysics
dc.subject.enAstrophysics - Astrophysics of Galaxies
dc.title.enGaia Data Release 1: Astrometry - one billion positions, two million proper motions and parallaxes
dc.typeArticle de revue
dc.identifier.doi10.1051/0004-6361/201628714
dc.subject.halPlanète et Univers [physics]/Astrophysique [astro-ph]/Instrumentation et méthodes pour l'astrophysique [astro-ph.IM]
dc.identifier.arxiv1609.04303
bordeaux.journalAstronomy and Astrophysics - A&A
bordeaux.pageid.A4
bordeaux.volume595
bordeaux.peerReviewedoui
hal.identifierhal-01366639
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01366639v1
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