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Instrument developments for asteroseismology at Dome-C

Published online by Cambridge University Press:  05 January 2006

M. Giard ,
F. Casoli ,
F. Paletou ,
R. Briguglio ,
A. Cacciani  and
E. Antonello
R. Briguglio*
Affiliation:
University LA SAPIENZA of Rome, Solar Physics Laboratory, Italy
A. Cacciani
Affiliation:
University LA SAPIENZA of Rome, Solar Physics Laboratory, Italy
E. Antonello
Affiliation:
Osservatorio Astronomico, Brera, Milan-Merate, Italy;
*
[email protected][email protected]
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Abstract

Helioseismology and Asteroseismology have already given importantcontributions to stellar astrophysics, and they provide a powerfuldiagnostic method to improve our knowledge about the interior andevolution of star. Some experimental problems, however, such as theatmospheric scintillation, affect the precision of the measurements wecan achieve. This kind of noise can ultimately be eliminated onlythrough space-based observation, at the expense of high organizationand financial costs. In the framework of a collaboration between theSolar Physics Laboratory (G28) of University of Rome La Sapienza andthe Brera Astronomical Observatory of Milan-Merate, an experimentalset-up has been developed to increase the signal to noise ratio of ourphotometric observations and reduce the scintillation noise. Thissystem appears to be a great help in observational asteroseismology asit strongly rejects the scintillation noise while amplifies thestellar signals. Dome-C would be the best ground based site for ourmeasurements because of its low scintillation noise level and high atmospheric stability.

Type
Research Article
Information
European Astronomical Society Publications Series , Volume 14: Dome C Astronomy and Astrophysics Meeting , 2005 , pp. 313 - 320
Copyright
© EAS, EDP Sciences, 2005

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