GLOBULAR CLUSTER FORMATION EFFICIENCIES FROM BLACK HOLE X-RAY BINARY FEEDBACK

	GLOBULAR CLUSTER FORMATION EFFICIENCIES FROM BLACK HOLE X-RAY BINARY FEEDBACK
	Justham, Stephen1 ; Peng, Eric W.2,3; Schawinski, Kevin 4
刊名	ASTROPHYSICAL JOURNAL LETTERS
	2015-08-10
卷号	809 期号:1
关键词	binaries: close globular clusters: general X-rays: binaries
英文摘要	We investigate a scenario in which feedback from black hole X-ray binaries (BHXBs) sometimes begins inside young star clusters before strong supernova (SN) feedback. Those BHXBs could reduce the gas fraction inside embedded young clusters while maintaining virial equilibrium, which may help globular clusters (GCs) to stay bound when SN-driven gas ejection subsequently occurs. Adopting a simple toy model with parameters guided by BHXB population models, we produce GC formation efficiencies consistent with empirically inferred values. The metallicity dependence of BHXB formation could naturally explain why GC formation efficiency is higher at lower metallicity. For reasonable assumptions about that metallicity dependence, our toy model can produce a GC metallicity bimodality in some galaxies without a bimodality in the field-star metallicity distribution.
收录类别	SCI
语种	英语
WOS记录号	WOS:000359321900016
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/5628]
专题	国家天文台_光学天文研究部
作者单位	1.Chinese Acad Sci, Key Lab Opt Astron, Natl Astron Observ, Beijing 100012, Peoples R China 2.Peking Univ, Dept Astron, Beijing 100871, Peoples R China 3.Peking Univ, Kavli Inst Astron & Astrophys, Beijing 100871, Peoples R China 4.Swiss Fed Inst Technol, Inst Astron, CH-8093 Zurich, Switzerland
推荐引用方式 GB/T 7714	Justham, Stephen,Peng, Eric W.,Schawinski, Kevin. GLOBULAR CLUSTER FORMATION EFFICIENCIES FROM BLACK HOLE X-RAY BINARY FEEDBACK[J]. ASTROPHYSICAL JOURNAL LETTERS,2015,809(1).
APA	Justham, Stephen,Peng, Eric W.,&Schawinski, Kevin.(2015).GLOBULAR CLUSTER FORMATION EFFICIENCIES FROM BLACK HOLE X-RAY BINARY FEEDBACK.ASTROPHYSICAL JOURNAL LETTERS,809(1).
MLA	Justham, Stephen,et al."GLOBULAR CLUSTER FORMATION EFFICIENCIES FROM BLACK HOLE X-RAY BINARY FEEDBACK".ASTROPHYSICAL JOURNAL LETTERS 809.1(2015).