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Performances and first science results with the VEGA/CHARA visible instrument

Authors :
Michel Tallon
Ph. Berio
H. A. McAlister
Denis Mourard
Jean-Michel Clausse
L. Sturmann
Neal J. Turner
Nicolas Nardetto
Karine Perraut
P. J. Goldfinger
T. ten Brummelaar
Alain Spang
Olivier Chesneau
Chris Farrington
D. Bonneau
O. Delaa
Isabelle Tallon-Bosc
J. Sturmann
Ph. Stee
Laboratoire Gemini (LG)
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)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS)
Centre de Recherche Astrophysique de Lyon (CRAL)
École normale supérieure de Lyon (ENS de Lyon)-Université Claude Bernard Lyon 1 (UCBL)
Université de Lyon-Université de Lyon-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)
Laboratoire Hippolyte Fizeau (FIZEAU)
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)
Joseph Louis LAGRANGE (LAGRANGE)
Laboratoire d'Astrophysique de Grenoble (LAOG)
Université Joseph Fourier - Grenoble 1 (UJF)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)
Georgia State University
University System of Georgia (USG)
Center for High Angular Resolution Astronomy (CHARA)
University System of Georgia (USG)-University System of Georgia (USG)
Source :
SPIE Astronomical Telescopes + Instrumentation, SPIE Astronomical Telescopes + Instrumentation, 2010, San Diego, United States. pp.77340D, ⟨10.1117/12.856100⟩
Publication Year :
2010
Publisher :
HAL CCSD, 2010.

Abstract

International audience; This paper presents the current status of the VEGA (Visible spEctroGraph and polArimeter) instrument installed at the coherent focus of the CHARA Array, Mount Wilson CA. Installed in september 2007, the first science programs have started during summer 2008 and first science results are now published. Dedicated to high angular (0.3mas) and high spectral (R=30000) astrophysical studies, VEGA main objectives are the study of circumstellar environments of hot active stars or interactive binary systems and a large palette of new programs dedicated to fundamental stellar parameters. We will present successively the main characteristics of the instrument and its current performances in the CHARA environment, a short summary of two science programs and finally we will develop some studies showing the potential and difficulties of the 3 telescopes mode of VEGA/CHARA.

Details

Language :
English
Database :
OpenAIRE
Journal :
SPIE Astronomical Telescopes + Instrumentation, SPIE Astronomical Telescopes + Instrumentation, 2010, San Diego, United States. pp.77340D, ⟨10.1117/12.856100⟩
Accession number :
edsair.doi.dedup.....5a67543fbdb4e2225b33db1790b35e8f
Full Text :
https://doi.org/10.1117/12.856100⟩