The Concordia Antarctic Station: an opportunity for asteroseismology and planetary search

Details The Concordia Antarctic Station: an opportunity for asteroseismology and planetary search The Concordia Antarctic Station: an opportunity for asteroseismology and planetary search

Jan 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002esasp.485..219s&link_type=abstract

In: Proceedings of the First Eddington Workshop on Stellar Structure and Habitable Planet Finding, 11 - 15 June 2001, Córdoba, S

Physics

Geophysics

2

Asteroseismology, Planetary Search

Scientific paper

Interruption in the obervations is a main limitation for asteroseismology. It conducted to the development of networks and spacecraft for asteroseismology as for helioseismology. However, the continuity offered by polar locations has played an historical role in the development of helioseismology, allowing the first measurement of individual mode frequencies (Fossat et al. 1981). Several projects were in the past envisioned for the exploitation of this capability for stellar observations, but none of them were actually developed. From 2004, the permanent Antarctic station Concordia, will be running for its first winter season. Located at Dome C, the Franco-Italian station will hold several scientific programs, including glaciology, geophysics, meteorology and astronomy. Continuity of the observations is not the only advantage of the polar station for astronomy. The high altitude, the low temperature and the incredible dryness of the site make it very favorable for sub-mm and far IR observations. The Nice University has already started the qualification of the site in the visible domain. Up to now, no night data has been recorded yet about sky transparency and seeing. However, they are good reasons to expect exceptional conditions. In comparison with South Pole site, the location on a dome provides very quiet weather with almost no wind. In consequence, the seeing, mainly dominated at South Pole by ground layer, should be excellent. Moreover, the absence of high altitude jet-stream let expect a scintillation much lower than in any other place. This would allow CCD observations to detect very faint photometric variations as expected for asteroseismology, or planetary detection.

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