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Searching Candidate Radio Sources for the Link with the Future GAIA Frame

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.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.authorBOURDA, G.
dc.date.issued2006
dc.date.conference2006
dc.description.abstractEnThe ESA astrometric space mission GAIA, to be launched by 2011, will survey all stars and QSOs down to an apparent magnitude of 20. It is estimated that 500 000 such QSOs should be detected, with position accuracies ranging from 40 muas at magnitude 15-18 to 100-200 muas at magnitude 20. Of these, a "clean sample" comprising 10,000 QSOs of the highest astrometric quality is envisioned for defining the GAIA frame. For reasons of continuity, it will be important that the future GAIA frame be linked to the present ICRF with the highest accuracy. However, it is found that only a limited portion of the current ICRF sources is likely to be seen by GAIA. In order to improve the link, we have searched dense radio catalogs to identify additional candidate sources and discuss the possibility of observing such sources with the present VLBI networks as part of the preparatory work for GAIA.
dc.language.isoen
dc.source.titleNomenclature, Precession and New Models in Fundamental Astronomy, 26th meeting of the IAU, Joint Discussion 16, 22-23 August 2006, Prague, Czech Republic, JD16, #33
dc.title.enSearching Candidate Radio Sources for the Link with the Future GAIA Frame
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.page33
bordeaux.countryCZ
bordeaux.title.proceedingNomenclature, Precession and New Models in Fundamental Astronomy, 26th meeting of the IAU, Joint Discussion 16, 22-23 August 2006, Prague, Czech Republic, JD16, #33
bordeaux.conference.cityPrague
bordeaux.peerReviewedoui
hal.identifierhal-00109307
hal.version1
hal.invitednon
hal.proceedingsoui
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00109307v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.btitle=Nomenclature,%20Precession%20and%20New%20Models%20in%20Fundamental%20Astronomy,%2026th%20meeting%20of%20the%20IAU,%20Joint%20Discussion%2016,%2022-23%20August%202006,%20&rft.date=2006&rft.spage=33&rft.epage=33&rft.au=CHARLOT,%20P.&LE%20CAMPION,%20J.-F.&BOURDA,%20G.&rft.genre=unknown


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