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ASTEP South: An Antarctic Search for Transiting Planets around the celestial South pole

Published online by Cambridge University Press:  01 May 2008

N. Crouzet
Affiliation:
Observatoire de la Côte d'Azur, Laboratoire Cassiopée (UMR OCA-CNRS 6202), B.P. 4229, F-06304 Nice Cedex 4, France email: [email protected]
K. Agabi
Affiliation:
Observatoire de la Côte d'Azur, Laboratoire Fizeau (UMR OCA-CNRS 6525), Parc Valrose, F-06108 Nice Cedex 2, France
A. Blazit
Affiliation:
Observatoire de la Côte d'Azur, Laboratoire Fizeau (UMR OCA-CNRS 6525), Parc Valrose, F-06108 Nice Cedex 2, France
S. Bonhomme
Affiliation:
Observatoire de la Côte d'Azur, Laboratoire Cassiopée (UMR OCA-CNRS 6202), B.P. 4229, F-06304 Nice Cedex 4, France email: [email protected]
Y. Fanteï-Caujolle
Affiliation:
Observatoire de la Côte d'Azur, Laboratoire Fizeau (UMR OCA-CNRS 6525), Parc Valrose, F-06108 Nice Cedex 2, France
F. Fressin
Affiliation:
Observatoire de la Côte d'Azur, Laboratoire Cassiopée (UMR OCA-CNRS 6202), B.P. 4229, F-06304 Nice Cedex 4, France email: [email protected]
T. Guillot
Affiliation:
Observatoire de la Côte d'Azur, Laboratoire Cassiopée (UMR OCA-CNRS 6202), B.P. 4229, F-06304 Nice Cedex 4, France email: [email protected]
F.-X. Schmider
Affiliation:
Observatoire de la Côte d'Azur, Laboratoire Fizeau (UMR OCA-CNRS 6525), Parc Valrose, F-06108 Nice Cedex 2, France
F. Valbousquet
Affiliation:
Optique et Vision, 6 bis avenue de l'Estérel, BP 69, 06162 Juan-Les-Pins, France
E. Bondoux
Affiliation:
Concordia Station, Dome C, Antarctica
Z. Challita
Affiliation:
Concordia Station, Dome C, Antarctica
L. Abe
Affiliation:
Observatoire de la Côte d'Azur, Laboratoire Fizeau (UMR OCA-CNRS 6525), Parc Valrose, F-06108 Nice Cedex 2, France
J.-B. Daban
Affiliation:
Observatoire de la Côte d'Azur, Laboratoire Fizeau (UMR OCA-CNRS 6525), Parc Valrose, F-06108 Nice Cedex 2, France
C. Gouvret
Affiliation:
Observatoire de la Côte d'Azur, Laboratoire Fizeau (UMR OCA-CNRS 6525), Parc Valrose, F-06108 Nice Cedex 2, France
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Abstract

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ASTEP South is the first phase of the ASTEP project that aims to determine the quality of Dome C as a site for future photometric searches for transiting exoplanets and discover extrasolar planets from the Concordia base in Antarctica. ASTEP South consists of a front-illuminated 4k × 4k CCD camera, a 10 cm refractor, and a simple mount in a thermalized enclosure. A double-glass window is used to reduce temperature variations and the associated turbulence on the optical path. The telescope is fixed and observes a 4° × 4° field of view centered on the celestial South pole. With this design, A STEP South is very stable and observes with low and constant airmass, both being important issues for photometric precision. We present the project, we show that enough stars are present in our field of view to allow the detection of one to a few transiting giant planets, and that the photometric precision of the instrument should be a few mmag for stars brighter than magnitude 12 and better than 10 mmag for stars of magnitude 14 or less.

Type
Contributed Papers
Copyright
Copyright © International Astronomical Union 2009

References

Crouzet, N., Guillot, T., Fressin, F., Blazit, A., et al. 2007, Astron. Nachr., 328, 805CrossRefGoogle Scholar
Fressin, F., Guillot, T., et al. 2005, EAS, 14, 309Google Scholar
Fressin, F., Guillot, T., Morello, V., & Pont, F. 2007, A&A, 475, 729Google Scholar