Astronomy and Astrophysics – Astrophysics
Scientific paper
2006-07-13
Advances in Stellar Interferometry, \'{E}tats-Unis d'Am\'{e}rique (2006)
Astronomy and Astrophysics
Astrophysics
12 pages
Scientific paper
10.1117/12.673098
VLTi Spectro-Imager (VSI) is a proposition for a second generation VLTI instrument which is aimed at providing the ESO community with the capability of performing image synthesis at milli-arcsecond angular resolution. VSI provides the VLTI with an instrument able to combine 4 telescopes in a baseline version and optionally up to 6 telescopes in the near-infrared spectral domain with moderate to high spectral resolution. The instrument contains its own fringe tracker in order to relax the constraints onto the VLTI infrastructure. VSI will do imaging at the milli-arcsecond scale with spectral resolution of: a) the close environments of young stars probing the initial conditions for planet formation; b) the surfaces of stars; c) the environment of evolved stars, stellar remnants and stellar winds, and d) the central region of active galactic nuclei and supermassive black holes. The science cases allowed us to specify the astrophysical requirements of the instrument and to define the necessary studies of the science group for phase A.
Benisty Myriam
Berger Jean Philippe
Buscher David
Coärer Etienne Le
Gai Mario
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