EMP stars with high mass IMF and hierarchical galaxy formation

Komiya, Yutaka; Suda, Takuma; Habe, Asao et al.

Proceedings of the International Astronomical Union, 2009, 5(S265), 128-129

Permalink : https://hdl.handle.net/2115/47494

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アクセス権	open access
URI	https://hdl.handle.net/2115/47494
タイトル	EMP stars with high mass IMF and hierarchical galaxy formation
著者	Komiya, Yutaka ; Suda, Takuma ; Habe, Asao ; Fujimoto, Masayuki Y.
著者名 Komiya, Yutaka
著者名 Suda, Takuma
e-Rad_Researcher 90180926 著者名 Habe, Asao
著者名 Fujimoto, Masayuki Y.
言語	英語
キーワード	stars: abundances
	stars: Population II
	Galaxy: evolution
	Galaxy: halo
発行日	2009
出版者	Cambridge University Press
収録物名	Proceedings of the International Astronomical Union
巻(号)	5(S265)
ページ	128-129
抄録	Extremely metal-poor (EMP) stars in the Galactic halo are stars formed in the very early stage of the chemical evolution of the Galaxy. In previous study, we proposed that typical mass of EMP stars are massive, based on observations of carbon-enhanced EMP stars. In this study, we build a merger tree of the Galaxy semi-analytically and follow the chemical evolution along the merger tree. We also consider the effect of binary and high-mass initial mass function(IMF). Resultant theoretical metallicity distribution function (MDF) and abundance distribution are compared with observed metal-poor halo stars.
資源タイプ	会議発表論文
出版タイプ	Version of Record
権利情報	© International Astronomical Union 2010
PISSN	1743-9213
EISSN	1743-9221
関連情報 (isIdenticalTo)	出版社版DOI https://doi.org/10.1017/S1743921310000384