Computer Science – Performance
Scientific paper
Nov 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006esasp1306..283a&link_type=abstract
"Proceedings of "The CoRoT Mission Pre-Launch Status - Stellar Seismology and Planet Finding" (ESA SP-1306). Editors: M. Fridlun
Computer Science
Performance
2
Scientific paper
The COROT small satellite project is a space mission dedicated to stellar seismology and search for telluric extra-solar planets. For the two programmes a very high photometric precision is needed. The COROT seismology programme will measure periodic variations with amplitude of 2.10-6 of the photon flux emitted by bright stars. COROT will also be able to detect the presence of exoplanets when they pass between the satellite and their parent star. Modifying both the integration time and the focus conditions, it allows to detect photons flux variations about 7.10-4 in one hour integration, compatible with an occultation detection on a very large number of stars (magnitude between 12 and 15.5). To reach the required performances a stringent instrument stability is necessary. This paper describes the impact of the three main perturbators on the photometric precision. The technical solutions which reduce their contribution at an acceptable level are described in other papers of this book
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