An Extrasolar Planet Transit Search with Subaru Suprime-Cam

Details An Extrasolar Planet Transit Search with Subaru Suprime-Cam An Extrasolar Planet Transit Search with Subaru Suprime-Cam

Oct 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006pasj...58..869u&link_type=abstract

Publications of the Astronomical Society of Japan, Vol.58, No.5, pp.869-881

Astronomy and Astrophysics

Astronomy

Stars: Binaries: Eclipsing, Stars: Planetary Systems, Techniques: Photometric

Scientific paper

We report the results of a prototype photometric search for transiting extrasolar planets using Subaru Suprime-Cam. Out of about 100000 stars monitored around the Galactic plane (l=90°, b=0°) we find that 7700 show photometric precision better than 1% for 60s exposures, which is required to detect extrasolar planets by the transit method. Thus, Suprime-Cam has the photometric stability and accuracy necessary for a transiting planet survey. During this observing run, we detected three objects (around 18.5mag for i'-band) that exhibit a single full transit-like light curve with a fractional depth of < 5%. While a spectroscopic follow-up remains to be done using future telescopes in the 20-30m class, the estimated parameters for the three systems are consistent with the planetary size companions around main-sequence stars. We also found two eclipsing binary candidates and eleven variable stars exhibiting W UMa-like light curves.

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