Calibration of the Gaia RVS from ground-based observations of candidate standard stars
| hal.structure.identifier | sSE 2011 | |
| dc.contributor.author | CHEMIN, L. | |
| hal.structure.identifier | M2A 2011 | |
| dc.contributor.author | SOUBIRAN, C. | |
| hal.structure.identifier | Galaxies, Etoiles, Physique, Instrumentation [GEPI] | |
| hal.structure.identifier | Observatoire de Paris - Site de Paris [OP] | |
| dc.contributor.author | CRIFO, Françoise | |
| hal.structure.identifier | Groupe de Recherche en Astronomie et Astrophysique du Languedoc [GRAAL] | |
| dc.contributor.author | JASNIEWICZ, Gérard | |
| hal.structure.identifier | Galaxies, Etoiles, Physique, Instrumentation [GEPI] | |
| hal.structure.identifier | Observatoire de Paris - Site de Paris [OP] | |
| dc.contributor.author | KATZ, David | |
| hal.structure.identifier | Institut de Mécanique Céleste et de Calcul des Ephémérides [IMCCE] | |
| dc.contributor.author | HESTROFFER, Daniel | |
| hal.structure.identifier | Observatoire Astronomique de l'Université de Genève [ObsGE] | |
| dc.contributor.author | UDRY, Stéphane | |
| dc.contributor.editor | Eds.: G. Alecian | |
| dc.contributor.editor | K. Belkacem | |
| dc.contributor.editor | R. Samadi and D. Valls-Gabaud | |
| dc.date.issued | 2011-12 | |
| dc.date.conference | 2011-06-20 | |
| dc.description.abstractEn | The Radial Velocity Spectrometer (RVS) on board of Gaia will perform a large spectroscopic survey to determine the radial velocities of some 1.5 × 10^8 stars. We present the status of ground-based observations of a sample of 1420 candidate standard stars designed to calibrate the RVS. Each candidate star has to be observed several times before Gaia launch (and at least once during the mission) to ensure that its radial velocity remains stable during the whole mission. Observations are performed with the high-resolution spectrographs SOPHIE, NARVAL and CORALIE, completed with archival data of the ELODIE and HARPS instruments. The analysis shows that about 7% of the current catalogue exhibits variations larger than the adopted threshold of 300 m s^{-1}. Consequently, those stars should be rejected as reference targets, due to the expected accuracy of the Gaia RVS. Emphasis is also put here on our observations of bright asteroids to calibrate the ground-based velocities by a direct comparison with celestial mechanics. It is shown that the radial velocity zero points of SOPHIE, NARVAL and CORALIE are consistent with each other, within the uncertainties. Despite some scatter, their temporal variations remain small with respect to our adopted stability criterion. | |
| dc.language.iso | en | |
| dc.source.title | SF2A-2011: Proceedings of the Annual meeting of the French Society of Astronomy and Astrophysics | |
| dc.subject.en | Galaxy : kinematics and dynamics | |
| dc.subject.en | Galaxy : structure | |
| dc.subject.en | Stars: kinematics and dynamics | |
| dc.subject.en | Minor planets | |
| dc.subject.en | asteroids: general | |
| dc.subject.en | Surveys | |
| dc.subject.en | Techniques: radial velocities | |
| dc.title.en | Calibration of the Gaia RVS from ground-based observations of candidate standard stars | |
| dc.type | Communication dans un congrès | |
| dc.subject.hal | Planète et Univers [physics]/Astrophysique [astro-ph]/Planétologie et astrophysique de la terre [astro-ph.EP] | |
| dc.subject.hal | Physique [physics]/Astrophysique [astro-ph]/Planétologie et astrophysique de la terre [astro-ph.EP] | |
| bordeaux.page | 271-274 | |
| bordeaux.conference.title | SF2A 2011: Annual meeting of the French Society of Astronomy and Astrophysics | |
| bordeaux.country | FR | |
| bordeaux.title.proceeding | SF2A-2011: Proceedings of the Annual meeting of the French Society of Astronomy and Astrophysics | |
| bordeaux.conference.city | Paris | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-00647650 | |
| hal.version | 1 | |
| hal.invited | non | |
| hal.proceedings | oui | |
| hal.conference.end | 2011-06-23 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-00647650v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.btitle=SF2A-2011:%20Proceedings%20of%20the%20Annual%20meeting%20of%20the%20French%20Society%20of%20Astronomy%20and%20Astrophysics&rft.date=2011-12&rft.spage=271-274&rft.epage=271-274&rft.au=CHEMIN,%20L.&SOUBIRAN,%20C.&CRIFO,%20Fran%C3%A7oise&JASNIEWICZ,%20G%C3%A9rard&KATZ,%20David&rft.genre=unknown |
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