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Proceedings Paper

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

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.

Paper Details

Date Published: 21 July 2010
PDF: 10 pages
Proc. SPIE 7734, Optical and Infrared Interferometry II, 77340D (21 July 2010); doi: 10.1117/12.856100
Show Author Affiliations
D. Mourard, OCA, UNS, CNRS FIZEAU (France)
M. Tallon, UCBL, CNRS CRAL (France)
Ph. Bério, OCA, UNS, CNRS FIZEAU (France)
D. Bonneau, OCA, UNS, CNRS FIZEAU (France)
O. Chesneau, OCA, UNS, CNRS FIZEAU (France)
J. M. Clausse, OCA, UNS, CNRS FIZEAU (France)
O. Delaa, OCA, UNS, CNRS FIZEAU (France)
N. Nardetto, OCA, UNS, CNRS FIZEAU (France)
K. Perraut, UJF, CNRS LAOG (France)
A. Spang, OCA, UNS, CNRS FIZEAU (France)
Ph. Stee, OCA, UNS, CNRS FIZEAU (France)
I. Tallon-Bosc, UCBL, CNRS CRAL (France)
H. McAlister, The CHARA Array, Mount Wilson Observatory (United States)
T. ten Brummelaar, The CHARA Array, Mount Wilson Observatory (United States)
J. Sturmann, The CHARA Array, Mount Wilson Observatory (United States)
L. Sturmann, The CHARA Array, Mount Wilson Observatory (United States)
N. Turner, The CHARA Array, Mount Wilson Observatory (United States)
C. Farrington, The CHARA Array, Mount Wilson Observatory (United States)
P. J. Goldfinger, The CHARA Array, Mount Wilson Observatory (United States)


Published in SPIE Proceedings Vol. 7734:
Optical and Infrared Interferometry II
William C. Danchi; Françoise Delplancke; Jayadev K. Rajagopal, Editor(s)

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