翻訳と辞書 Words near each other ・ Zeta Arae ・ Zeta argillaceum ・ Zeta Arietis ・ Zeta Aurigae ・ Zeta Banovina ・ Zeta Beta Tau ・ Zeta Bosio ・ Zeta Boötis ・ Zeta Caeli ・ Zeta Cancri ・ Zeta Canis Majoris ・ Zeta Canis Minoris ・ Zeta Capricorni ・ Zeta Cassiopeiae ・ Zeta Centauri ・ Zeta Cephei ・ Zeta Ceti ・ Zeta Chamaeleontis ・ Zeta Chi ・ Zeta Chi Phi ・ Zeta Circini ・ Zeta Coronae Australis ・ Zeta Coronae Borealis ・ Zeta Corse ・ Zeta Corvi ・ Zeta Crateris ・ Zeta Crucis ・ Zeta Cygni ・ Zeta Delphini ・ Zeta Delta Xi Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Zeta Cephei ： ウィキペディア英語版 Zeta Cephei Zeta Cephei (ζ Cep, ζ Cephei) is a star in the constellation of Cepheus. Zeta Cephei marks the left shoulder of Cepheus, the King of Joppa (Ethiopia). It is one of the fundamental stars of the MK spectral sequence, defined as type K1.5 Ib. Zeta Cephei is an orange supergiant star with a surface temperature of 3,853 K and eight times more massive than the Sun. The luminosity of Zeta Cephei is approximately 3,600 times that of the Sun. At a distance of about 840 light-years,〔 Zeta Cephei has an apparent magnitude (''m'') of 3.4 and an absolute magnitude (''M'') of -4.7. The star has a metallicity approximately 1.6 times that of the Sun; i.e., it contains 1.6 times as much heavy-element material as the Sun. Hekker et al. (2008) have detected a periodicity of 533 days, hinting at the possible presence of an as yet unseen companion. It is listed as a possible eclipsing binary with a very small amplitude.〔 At the edge of the 8 to 10 solar mass () limit at which stars develop iron cores and then explode as supernovae, Zeta Cephei's most likely fate is to produce a very massive white dwarf near the Chandrasekhar limit (1.4 ) at which such dense remnants can survive. If Zeta Cephei ''is'' a binary star; i.e., if there ''is'' a stellar companion, and it is close enough to feed sufficient matter to the white-dwarf-to-be, it is marginally possible that the limit could be overflowed, resulting in the white dwarf's collapse and a Type Ia supernova explosion. ==References== 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「Zeta Cephei」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.