Published 2004
| Version v1
Journal article
Spectroscopic survey of the Galaxy with Gaia- I. Design and performance of the Radial Velocity Spectrometer
Creators
- Katz, D.
- Munari, U.
- Cropper, M.
- Zwitter, T.
- Thévenin, F.
- David, M.
- Viala, Y.
- Crifo, F.
- Gomboc, A.
- Royer, F.
- Arenou, Frédéric
- Marrese, P.
- Sordo, R.
- Wilkinson, M.
- Vallenari, A.
- Turon, C.
- Helmi, A.
- Bono, Guillaume
- Perryman, M.
- Gomez, A.
- Tomasella, L.
- Boschi, F.
- Morin, D.
- Haywood, M.
- Soubiran, C.
- Castelli, F.
- Bijaoui, A.
- Bertelli, G.
- Prsa, A.
- Mignot, S.
- Sellier, Alain
- Baylac, M-O
- Lebreton, Y.
- Jauregi, U.
- Siviero, A.
- Bingham, R.
- Chemla, F.
- Coker, J.
- Dibbens, T.
- Hancock, B.
- Holland, A.
- Horville, D.
- Huet, J-M
- Laporte, P.
- Melse, T.
- Sayede, F.
- Stevenson, T-J
- Vola, P.
- Walton, D.
- Winter, B.
Contributors
Others:
- Galaxies, Etoiles, Physique, Instrumentation (GEPI) ; Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris ; Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)
- INAF - Osservatorio Astronomico di Padova (OAPD) ; Istituto Nazionale di Astrofisica (INAF)
- Mullard Space Science Laboratory (MSSL) ; University College of London [London] (UCL)
- University of Ljubljana
- Laboratoire de Cosmologie, Astrophysique Stellaire & Solaire, de Planétologie et de Mécanique des Fluides (CASSIOPEE) ; Université Nice Sophia Antipolis (1965 - 2019) (UNS) ; COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de la Côte d'Azur ; COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS)
- Universiteit Antwerpen = University of Antwerpen [Antwerpen]
- Faculty of Mathematics and Physics [Ljubljana] (FMF) ; University of Ljubljana
- Kapteyn Astronomical Institute [Groningen] ; University of Groningen [Groningen]
- European Space Research and Technology Centre (ESTEC) ; European Space Agency (ESA)
- INAF - Osservatorio Astronomico di Roma (OAR) ; Istituto Nazionale di Astrofisica (INAF)
- Observatoire aquitain des sciences de l'univers (OASU) ; Université Sciences et Technologies - Bordeaux 1-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)
- INAF - Osservatorio Astronomico di Trieste (OAT) ; Istituto Nazionale di Astrofisica (INAF)
- Observatoire de Paris - Site de Paris (OP) ; Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris ; Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)
- Rutheford Appleton Laboratory ; Rutheford Appleton Laboratory
- University of Leicester
- Laboratoire Hubert Curien [Saint Etienne] (LHC) ; Institut d'Optique Graduate School (IOGS)-Université Jean Monnet [Saint-Étienne] (UJM)-Centre National de la Recherche Scientifique (CNRS)
Description
The definition and optimization studies for the Gaia satellite spectrograph, the 'radial velocity spectrometer' (RVS), converged in late 2002 with the adoption of the instrument baseline. This paper reviews the characteristics of the selected configuration and presents its expected performance. The RVS is a 2.0 × 1.6 degree integral field spectrograph, dispersing the light of all sources entering its field of view with a resolving power R = λ//λ = 11 500 over the wavelength range [848, 874] nm. The RVS will continuously and repeatedly scan the sky during the 5-yr Gaia mission. On average, each source will be observed 102 times over this period. The RVS will collect the spectra of about 100-150 million stars up to magnitude V 17-18. At the end of the mission, the RVS will provide radial velocities with precisions of ∼2 km s −1 at V = 15 and ∼15-20 km s −1 at V = 17, for a solar-metallicity G5 dwarf. The RVS will also provide rotational velocities, with precisions (at the end of the mission) for late-type stars of σ v sin i 5 km s −1 at V 15 as well as atmospheric parameters up to V 14-15. The individual abundances of elements such as silicon and magnesium, vital for the understanding of Galactic evolution, will be obtained up to V 12-13. Finally, the presence of the 862.0-nm
Abstract
International audienceAdditional details
Identifiers
- URL
- https://hal.archives-ouvertes.fr/hal-02053985
- URN
- urn:oai:HAL:hal-02053985v1
Origin repository
- Origin repository
- UNICA