Extrasolar Planet Search by Transit Method using Subaru Telescope 2

Abstract

We tried to detect extrasolar planets by transit method using Suprime-Cam. The number of detected stars is over 30000 and their photometric accuracy is within 5%. These values strongly indicate that the Suprime-Cam is an excellent detector to search for extrasolar planets. An example of the observed light curve appears in Fig 1. This object is double star which consists of late K and early M type stars. From our detailed analysis, we have found that the flux of a late K star decreases about 3.5%. This decrease of flux can be explained by the occultation of a 1.2 Jupiter radius planet.