翻訳と辞書
Words near each other
・ Koi, California
・ Koi, Hanabi
・ KOI-18
・ KOI-2124.01
・ KOI-2194.03
・ KOI-256
・ KOI-2626.01
・ KOI-3010.01
・ KOI-3138.01
・ KOI-3456.02
・ KOI-433.02 m
・ KOI-4878.01
・ KOI-5737.01
・ KOI-5806.01
・ KOI-7296.01
KOI-74
・ KOI-7599.01
・ KOI-7617.01
・ KOI-81
・ KOI-854.01
・ Koi-Koi
・ Koi-Yamagata Station
・ Koi... Mil Gaya
・ KOI7
・ KOI8-R
・ KOI8-U
・ Koiak
・ Koiari Raid
・ Koiarian languages
・ Koiatu Koiatu


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KOI-74 : ウィキペディア英語版
KOI-74

KOI-74 () is an eclipsing binary star in the constellation of Cygnus. The primary star is an A-type main-sequence star with a temperature of . It lies in the field of view of the Kepler Mission and was determined to have a companion object in orbit around it which is smaller and hotter than the main star.〔
==KOI-74b==

KOI-74b is a hot compact object orbiting KOI-74. It was discovered in 2010 by the Kepler Mission and came to attention because of its small size (its radius is only 4.3% of the solar radius) and high temperature of .〔 The orbit of KOI-74b around the main star takes 5.18875 days to complete. Analysis of relativistic boosting of light in the Kepler data indicates that it is likely to be a low mass white dwarf of approximately 0.22 solar masses, resulting from an earlier phase of mass transfer in a binary system when the object underwent its giant phase.〔

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
ウィキペディアで「KOI-74」の詳細全文を読む



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