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・ Gamma-guanidinobutyraldehyde dehydrogenase
・ Gamma-humulene synthase
・ Gamma-Hydroxybutyraldehyde
・ Gamma-Hydroxybutyric acid
・ Gamma-Hydroxyvaleric acid
・ Gamma-L-glutamyl-butirosin B gamma-glutamyl cyclotransferase
・ Gamma-L-Glutamyl-L-cysteine
・ Gamma-Linolenic acid
・ Gamma-Melanocyte-stimulating hormone
・ Gamma-muurolene synthase
・ Gamma Control
・ Gamma Coronae Australis
・ Gamma Coronae Borealis
・ Gamma Corps
・ Gamma correction
Gamma Corvi
・ Gamma counter
・ Gamma Crateris
・ Gamma Crucis
・ Gamma Cygni
・ Gamma Delphini
・ Gamma delta T cell
・ Gamma distribution
・ Gamma diversity
・ Gamma Doradus
・ Gamma Doradus variable
・ Gamma Draconis
・ Gamma Epsilon Tau
・ Gamma Equulei
・ Gamma Eridani


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Gamma Corvi : ウィキペディア英語版
Gamma Corvi


Gamma Corvi (γ Crv, γ Corvi) is the brightest star in the southern constellation of Corvus, having an apparent visual magnitude of 2.6.〔 Its traditional name is Gienah, which it shares with Epsilon Cygni. The name "Gienah Corvi", or "Gienah Ghurab", may be used to distinguish it from this star in Cygnus. The distance to this star has been measured directly using the parallax technique, yielding an estimated from Earth.〔
==Properties==
Also called Gienah, Gamma Corvi is the brightest star in Corvus at magnitude 2.59. It is a giant star with a stellar classification of B8 III.〔 It has around 4.2〔 times the mass of the Sun. It has a blue-white hue.〔 The spectrum of this star displays an anomalously higher than normal abundance of the elements mercury and manganese, making this a Mercury-manganese star.〔 However, there are other elements that show large over or under abundances.〔 This chemical peculiarity in an otherwise stable stellar atmosphere is most likely caused by separation of the elements through diffusion and gravitational settling.〔
Gamma Corvi has a confirmed stellar companion with a mass of about 0.8 times the Sun's, which may be orbiting at a separation of around 50 AU over a 158 year period.〔 The photometry for this star suggests a stellar classification in the range K5–M5 V.〔

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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