出典:Wikipedia
出典:『Wikipedia』 (2011/04/28 18:53 UTC 版)
A Kepler Object of Interest (KOI) is a star observed by the Kepler spacecraft which is suspected of hosting one or more transiting planets. KOI's come from a master list of 150,000 stars which itself is generated from the Kepler Input Catalog (KIC). A KOI shows a periodic dimming, indicative of an unseen planet passing between the star and Earth, eclipsing part of the star. However, such an observed dimming is not a guarantee of a transiting planet, as other astronomical objects - such as an eclipsing binary in the background - can mimic a transit signal. For this reason, the majority of KOI's are not as yet confirmed transiting planet systems.