Extrasolar Transiting Planet Search with Subaru Suprime-Cam

Details Extrasolar Transiting Planet Search with Subaru Suprime-Cam Extrasolar Transiting Planet Search with Subaru Suprime-Cam

2006-03-14

arxiv.org/abs/astro-ph/0603346v1

Astronomy and Astrophysics

Astrophysics

14pages, 27figures

Scientific paper

We report the results of a prototype photometric search for transiting extrasolar planets using Subaru Suprime-Cam. Out of about 100,000 stars monitored around the Galactic plane (l=90 degree,b=0 degree), we find that 7,700 (27,000) stars show the photometric precision below 1% (3%) for 60 second exposures which is required to detect extrasolar planets by the transit method. Thus Suprime-Cam has the photometric stability and accuracy required for a transiting planet survey. During this observing run, we detected three transiting planetary candidates (i'-band magnitude around 18.5) which exhibit a single full transit-like light curve with a fractional depth of <5%. While future photometric and/or spectroscopic follow-ups remain to be done, the estimated parameters for the three systems are consistent with planetary 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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