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A Gaia oriented analysis of a large sample of quasars

hal.structure.identifierSystèmes de Référence Temps Espace [SYRTE]
dc.contributor.authorANDREI, A. H.
dc.contributor.authorASSAFIN, M.
hal.structure.identifierSystèmes de Référence Temps Espace [SYRTE]
dc.contributor.authorBARACHE, C.
hal.structure.identifierSystèmes de Référence Temps Espace [SYRTE]
dc.contributor.authorBOUQUILLON, S.
hal.structure.identifierLaboratoire d'astrodynamique, d'astrophysique et d'aéronomie de bordeaux [L3AB]
hal.structure.identifierObservatoire aquitain des sciences de l'univers [OASU]
hal.structure.identifierLaboratoire d'Astrophysique de Bordeaux [Pessac] [LAB]
dc.contributor.authorBOURDA, G.
hal.structure.identifierLaboratoire d'astrodynamique, d'astrophysique et d'aéronomie de bordeaux [L3AB]
hal.structure.identifierObservatoire aquitain des sciences de l'univers [OASU]
hal.structure.identifierLaboratoire d'Astrophysique de Bordeaux [Pessac] [LAB]
dc.contributor.authorCAMARGO, J. I. B.
hal.structure.identifierLaboratoire d'astrodynamique, d'astrophysique et d'aéronomie de bordeaux [L3AB]
hal.structure.identifierObservatoire aquitain des sciences de l'univers [OASU]
hal.structure.identifierLaboratoire d'Astrophysique de Bordeaux [Pessac] [LAB]
dc.contributor.authorLE CAMPION, J.-F.
hal.structure.identifierLaboratoire d'astrodynamique, d'astrophysique et d'aéronomie de bordeaux [L3AB]
hal.structure.identifierObservatoire aquitain des sciences de l'univers [OASU]
hal.structure.identifierLaboratoire d'Astrophysique de Bordeaux [Pessac] [LAB]
dc.contributor.authorCHARLOT, P.
hal.structure.identifierSystèmes de Référence Temps Espace [SYRTE]
dc.contributor.authorGONTIER, A.-M.
hal.structure.identifierSystèmes de Référence Temps Espace [SYRTE]
dc.contributor.authorLAMBERT, S.
dc.contributor.authorOSÓRIO, J. J. Pereira
dc.contributor.authorDA SILVA NETO, D. N.
hal.structure.identifierSystèmes de Référence Temps Espace [SYRTE]
dc.contributor.authorSOUCHAY, J.
dc.contributor.authorMARTINS, R. Vieira
dc.date.created2008
dc.date.issued2008
dc.date.conference2007
dc.description.abstractEnGaia photometric capabilities should distinguish quasars to a high degree of certainty. With this, they should also be able to deliver a clean sample of quasars with a negligible trace of stellar contaminants. However, a purely photometric sample could miss a non negligible percentage of ICRF sources counterparts - and this interface is required to align with the ICRS and de-rotate the GCRF (Gaia Celestial Reference Frame), on grounds of continuity. To prepare a minimum clean sample forming the initial quasar catalogue for the Gaia mission, an all sky ensemble was formed containing 128,257 candidates. Among them there is at least one redshift determination for 98.75%, and at least one magnitude determination for 99.20% of the targets. The sources were collected from different optical and radio lists. We analyze the redshift, magnitude, and color distributions, their relationships, as well as their degree of completeness. Complementary, the candidate sources enable to form an optical representation of the ICRS from first principles, namely, kinematically non-rotating with respect to the ensemble of distant extragalactic objects, aligned to the mean equator and dynamical equinox of J2000, and realized by a list of adopted coordinates of extragalactic sources.
dc.language.isoen
dc.source.titleProceedings of the "Journées Systèmes de Référence Spatio-temporels 2007" -2008jsrs.meet...32A
dc.subject.enastronomical data bases: miscellaneous
dc.subject.enastrometry
dc.subject.enreference systems
dc.subject.enquasars: general
dc.title.enA Gaia oriented analysis of a large sample of quasars
dc.typeCommunication dans un congrès
dc.subject.halPhysique [physics]/Astrophysique [astro-ph]/Cosmologie et astrophysique extra-galactique [astro-ph.CO]
dc.subject.halPlanète et Univers [physics]/Astrophysique [astro-ph]
bordeaux.page32
bordeaux.conference.title« The Celestial Reference Frame for the future", Proc. Journées Systèmes de Référence Spatio-Temporels 2007: " ed. N. Capitaine, Meudon – France, 17-19 Septembre 2007
bordeaux.countryFR
bordeaux.title.proceedingProceedings of the "Journées Systèmes de Référence Spatio-temporels 2007" -2008jsrs.meet...32A
bordeaux.conference.cityMeudon
bordeaux.peerReviewedoui
hal.identifierhal-00319672
hal.version1
hal.invitednon
hal.proceedingsoui
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00319672v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.btitle=Proceedings%20of%20the%20%22Journ%C3%A9es%20Syst%C3%A8mes%20de%20R%C3%A9f%C3%A9rence%20Spatio-temporels%202007%22%20-2008jsrs.meet...32A&rft.date=2008&rft.spage=32&rft.epage=32&rft.au=ANDREI,%20A.%20H.&ASSAFIN,%20M.&BARACHE,%20C.&BOUQUILLON,%20S.&BOURDA,%20G.&rft.genre=unknown


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