Extrasolar Transiting Planet Search with Subaru Suprime-Cam
Abstract
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.
Cite
@article{arxiv.astro-ph/0603346,
title = {Extrasolar Transiting Planet Search with Subaru Suprime-Cam},
author = {Seitaro Urakawa and Toru Yamada and Yasushi Suto and Edwin. L. Turner and Yoichi Itoh and Tadashi Mukai and Motohide Tamura and Yiping Wang},
journal= {arXiv preprint arXiv:astro-ph/0603346},
year = {2007}
}
Comments
14pages, 27figures