Transit method and discovery of exoplanet

Abstract

This issue reports a brief review about transit method of detecting extrasolar planet (exoplanet). When a exoplanet crosses (transits) in front of its host star's disk along the line of sight, then the observed visual brightness of the star drops by a small amount. The transit method is responsible for 23% of some important new discoveries of exoplanets. In this sense, we explain didactically the conceptual and calculational details of transit method. As a result of application of the transit method, we applied it to exoplanet COROT-1b.