The CoRoT mission: Asteroseismology and Planet Finding

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The CoRoT mission, scheduled for launch in October 2006, has two core science goals: the detection and characterisation of planets, both earth like and gaseous giants, around other stars; and the detection of oscillations of selected target stars and the use of such oscillations to probe the interior structure and dynamics of stars, and so to test and develop our understanding of stellar structure and evolution. CoRoT has been developed within the framework of the French CNES small- satellite programme, with contributions from Austria, Belgium, Brazil, ESA, ESTEC, Germany, and Spain. It will perform relatively broad- band photometry in visible light with a 28 cm off- axis telescope and four CCDs, two of which are devoted to the planet search programme and two to the seismology programme. It will have several ( five or six ) long observing runs (150 days) on several target fields; in the seismology programme it will simultaneously observe ten target stars per field (with m[v][ ] < 9), chosen to give wide coverage of the H-R diagram. In addition to the long runs there will be two initial runs of 60 and 30 days duration, and five or six short runs of 20 days. There is a Guest Investigator programme in which the data from the planet search fields (about 4000 stars) can be used for seismology on fainter stars, and for other science goals than planet finding, and a few short runs which can be for other science than the core planet finding and seismology.

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