SIAMOIS: An Asteroseismic Network with 1 Site in Antarctica

Computer Science

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Asteroseismology, Instrumentation, Doppler Measurements, Fourier Tachometer

Scientific paper

SIAMOIS is a project devoted to ground-based asteroseismology, involving an instrument to be installed at the Dome C Concordia station in Antarctica. Dome C appears to be the ideal place for ground-based asteroseismic observations. The unequalled weather conditions yield a duty cycle as high as 90% over 3 months, as was observed during the 2005 wintering. This high duty cycle, a crucial point for asteroseismology, is comparable to the best space-based observations. Long time series (up to 3 months) will be possible, thanks to the long duration of the polar night. As a consequence, S IAMOIS is the only asteroseismic programme that can follow the way opened by the space project C O ROT: it will provide unique information on G and K type bright stars on the main sequence. In addition, spectrometric observations with S IAMOIS will be able to detect oscillation modes that cannot be analysed in photometry, and will be less affected by stellar activity noise, increasing the complementarity with space-based photometric observations.

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