EAS Publications Series
Volume 14, 2005Dome C Astronomy and Astrophysics Meeting
|Page(s)||291 - 296|
|Published online||05 January 2006|
M. Giard, F. Casoli and F. Paletou (eds)
EAS Publications Series, 14 (2005) 291-296
The Dome C: A unique site for high-contrast imaging and extrasolar planet searching with a large telescope
INAF-Osservatorio Astrofisico di
Arcetri, 50125 Firenze, Italy;
2 LUAN-UMR 6525, Univ. de Nice, Parc Valrose, 06108 Nice Cedex 2, France
Corresponding author: firstname.lastname@example.org
The Dome C should benefit from an outstanding atmospheric quality during the night due to catabatic wind conditions (wind speed ~ 2 m s-1, r0 ~ 0.3 m). From analytical and numerical simulations, we show that these seeing conditions are very advantageous for high-contrast imaging and coronagraphic search of exoplanets in the near-IR with adaptive optics (AO): from the Dome C, the planet SNR is 4 times greater than from Mauna-Kea. For these reasons, the Dome C seems to be the natural site for a Planet-Finder consisting in a 2–8 m (possibly off-axis) monolithic telescope equipped with a fast and extreme AO (f ~ 1–2 kHz, f ~ cm), a low-aliasing wave-front sensor (WFS), a coronagraph and a speckle-noise subtraction. In these optimal conditions, a 3.6 m and a 8.2 m-telescope can respectively detect a Jupiter-size and an Earth-size planet at 10 pc in 10h in J band. Lastly, a 15–30 m ELT located at the Dome C could perform fast spectral analysis of Earth-like planets for biomarker searching.
© 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.