Abstract
A transit of an extrasolar planet is a phenomenon that an extrasolar planet cut across in front of its parent star. The detections of the phenomenon tell about the planet such as its mass and density. However, to date there are only 12 transiting extrasolar planets detected while over 200 planets have been detected by the Doppler method. We set up a 30cm telescope in Kobe University to detect the transit. Making the photometric observations, we monitor the lumi-nosity changes of stars, the changes in radial velocities of which have been seen in the N2K consortium (Fischer et al. 2005) which is the hot-Jupiter survey project with the Doppler method. In this lecture, we report the result of our transit observation.
