EAS Publications Series
Volume 14, 2005Dome C Astronomy and Astrophysics Meeting
|Page(s)||133 - 138|
|Published online||05 January 2006|
M. Giard, F. Casoli and F. Paletou (eds)
EAS Publications Series, 14 (2005) 133-138
SIAMOIS: a Doppler asteroseismometer for Dome C
LESIA, CNRS UMR 8109, Observatoire de Paris, 92195 Meudon Cedex, France
2 IAP, CNRS UMR, 98 Bld. Arago, 75014 Paris, France
Corresponding author: firstname.lastname@example.org
The photometric instruments in space (most, corot) are going to open new insights on the knowledge of stellar interiors. However, ground-based asteroseismic observations remain justified as they can bring complementary velocity measurements, and allow the study of much more targets. A competitive instrument must make it possible the observation of a representative set of solar-like stars with magnitude down to 5, and a velocity precision as low as a few cm s-1 after 5 nights behind a 2-m class telescope. The siamois project based on a Fourier interferometer has emerged as a suitable solution to fulfil the specifications for a ground-based asteroseismic network. The photon noise limited performances have been examined and compared to those of a grating spectrometer (Mosser et al. 2003) showing that this type of instrument can reach the required specifications. With a design based on a monolithic interferometer, with a compact instrument easy to set up, to operate remotely with a limited data-flow, it can fit well the harsh conditions of Dome C. Main advantage, a single unit is needed due to the circumpolar position of the targets for the Doppler detection of stellar oscillations on solar-type stars. As a test bed, siamois could be put on 0.8-m class telescope like irait (Busso et al. these proceedings).
© EAS, EDP Sciences, 2005
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.