Ref: ASTROimport-1015

Science with GYES: a multifibre high-resolution spectrograph for the prime focus of the Canada-France-Hawaii Telescope

Bonifacio, P. ; Arenou, F. ; Babusiaux, C. ; Balkowski, C. ; Bienaymé, O. ; Briot, D. ; Caffau, E. ; Carlberg, R. ; Famaey, B. ; François, P. ; Frémat, Y. ; Gomez, A. ; Haywood, M. ; Hill, V. ; Katz, D. ; Kudritzky, R. ; Lallement, R. ; de Laverny, P. ; Lemasle, B. ; Martayan, C. ; Monier, R. ; Mourard, D. ; Nardetto, N. ; Recio Blanco, A. ; Robichon, N. ; Robin, A. C. ; Rodrigues, M. ; Royer, F. ; Soubiran, C. ; Turon, C. ; Venn, K. ; Viala, Y.

published in Ground-based and Airborne Instrumentation for Astronomy III, 7735, pp. 77350E-77350E-9 (2010)

Abstract: We present the scientific motivations for GYES: a high multiplex (of the order of several hundred), high resolution (about 20 000), spectrograph to be placed at the prime focus of the CFHT. The main purpose of such an instrument is to conduct a spectroscopic survey complementary to the Gaia mission. The final Gaia catalogue (expected around 2020) will provide accurate distances, proper motions and spectrophotometry for all the stars down to a magnitude of 20. The spectroscopic instrument on board the Gaia satellite will provide intermediate resolution (R=11 500) spectra for stars down to the 17th magnitude. For the fainter stars there will be no radial velocity information. For all the stars the chemical information will be limited to a few species. A multifibre spectrograph at the prime focus of the CFHT will be able to provide the high resolution spectra for stars fainter than 13th magnitude, needed to obtain both accurate radial velocities and detailed chemical abundances. The possible use of GYES will not be limited to Gaia complementary surveys and we here describe the potentialities of such an instrument. We describe here how the scientific drivers are translated into technical requirements. The results of our on-going feasibility study are described in an accompanying poster.

DOI: 10.1117/12.857081
Links: link

The record appears in these collections:
Royal Observatory of Belgium > Astronomy & Astrophysics
Science Articles > Non-refereed Articles

 Record created 2016-07-01, last modified 2016-07-06