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Towards a new set of radial velocity standards for Gaia

dc.contributor.authorCRIFO, F.
dc.contributor.authorJASNIEWICZ, Gérard
dc.contributor.authorHESTROFFER, D.
dc.contributor.authorSIEBERT, A.
dc.contributor.authorGUERRIER, A.
dc.contributor.authorKATZ, D.
dc.contributor.authorTHEVENIN, F.
dc.contributor.authorTURON, C.
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.authorSOUBIRAN, C.
dc.date.issued2007
dc.date.conference2007
dc.description.abstractEnThe ESA GAIA mission (launch expected end 2011) will measure positions, proper motions, parallaxes and magnitudes in various spectral bands for about 10^9 objects, and produce radial velocities and spectra for about 10^8 objects. Although Gaia is usually labelled as a self-calibrating instrument, some external calibrations are mandatory, especially for radial velocities and photometry. A coordinated plan of ground-based observations is being organised in support of Gaia to obtain the necessary auxiliary data. In particular, the calibration of the wavelength scale and zero-point of the radial velocities will rely on asteroids and on a set of about one thousand reference stars. Such stars must be selected from larger existing lists with drastic criteria and qualified as radial velocity standards from ground based observations. This poster describes the selection of stars, the observing programme on various telescopes, and the first results obtained with the ELODIE and SOPHIE spectrographs.
dc.language.isoen
dc.source.title2007sf2a.conf..459C - SF2A-2007: Proceedings of the Annual meeting of the French Society of Astronomy and Astrophysics
dc.title.enTowards a new set of radial velocity standards for Gaia
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.page459
bordeaux.countryFR
bordeaux.title.proceeding2007sf2a.conf..459C - SF2A-2007: Proceedings of the Annual meeting of the French Society of Astronomy and Astrophysics
bordeaux.conference.cityGrenoble
bordeaux.peerReviewedoui
hal.identifierhal-00256884
hal.version1
hal.invitednon
hal.proceedingsoui
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00256884v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.btitle=2007sf2a.conf..459C%20-%20SF2A-2007:%20Proceedings%20of%20the%20Annual%20meeting%20of%20the%20French%20Society%20of%20Astronomy%20and%20Astrophysics&rft.date=2007&rft.spage=459&rft.epage=459&rft.au=CRIFO,%20F.&JASNIEWICZ,%20G%C3%A9rard&HESTROFFER,%20D.&SIEBERT,%20A.&GUERRIER,%20A.&rft.genre=unknown


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