Companion stars of type Ia supernovae and hypervelocity stars

doi:10.1051/0004-6361/200913326

YNAO OpenIR > 大样本恒星演化研究组

	Companion stars of type Ia supernovae and hypervelocity stars
	Wang B(王博)1,2 ; Han ZW(韩占文)1 ; Wang, B (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Observ, Kunming 650011, Peoples R China.
发表期刊	ASTRONOMY & ASTROPHYSICS
	2009-12
卷号	508 期号:2 页码:L27-L30
DOI	10.1051/0004-6361/200913326
产权排序	第1完成单位
收录类别	SCI ; EI
关键词	Binaries: General Supernovae: General Stars: Evolution White Dwards
摘要	Context. Recent investigations of the white dwarf (WD) + He star channel of Type Ia supernovae (SNe Ia) imply that this channel can produce SNe Ia with short delay times. The companion stars in this channel would survive and potentially be identifiable. Aims. In this Letter, we study the properties of the companion stars of this channel at the moment of SN explosion, which can be verified by future observations. Methods. According to SN Ia production regions of the WD + He star channel and three formation channels of WD + He star systems, we performed a detailed binary population synthesis study to obtain the properties of the surviving companions. Results. We obtained the distributions of many properties of the companion stars of this channel at the moment of SN explosion. We find that the surviving companion stars have a high spatial velocity (> 400 km s(-1)) after SN explosion, which could be an alternative origin for hypervelocity stars (HVSs), especially for HVSs such as US 708.
项目资助者	National Natural Science Foundation of China [10821061] ; National Basic Research Program of China [2007CB815406] ; Yunnan Natural Science Foundation [08YJ041001]
语种	英语
学科领域	Astronomy & Astrophysics
文章类型	Article
ISSN	0004-6361
URL	查看原文
归档日期	2009-12-14
WOS记录号	WOS:000273296700002
WOS研究方向	Astronomy & Astrophysics
WOS类目	Astronomy & Astrophysics
关键词[WOS]	SINGLE-DEGENERATE CHANNEL ; SUBDWARF-B-STARS ; WHITE-DWARF ; BLACK-HOLE ; SYMBIOTIC CHANNEL ; BINARY-SYSTEMS ; DELAY TIMES ; PROGENITORS ; EVOLUTION ; MASS
引用统计	被引频次：80[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ynao.ac.cn/handle/114a53/4464
专题	大样本恒星演化研究组
通讯作者	Wang, B (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Observ, Kunming 650011, Peoples R China.
作者单位	1.National Astronomical Observatories/Yunnan Observatory, the Chinese Academy of Sciences, Kunming 650011, PR China 2.Graduate University of the Chinese Academy of Sciences, Beijing 100049, PR China
第一作者单位	中国科学院云南天文台
推荐引用方式 GB/T 7714	Wang B,Han ZW,Wang, B . Companion stars of type Ia supernovae and hypervelocity stars[J]. ASTRONOMY & ASTROPHYSICS,2009,508(2):L27-L30.
APA	Wang B,Han ZW,&Wang, B .(2009).Companion stars of type Ia supernovae and hypervelocity stars.ASTRONOMY & ASTROPHYSICS,508(2),L27-L30.
MLA	Wang B,et al."Companion stars of type Ia supernovae and hypervelocity stars".ASTRONOMY & ASTROPHYSICS 508.2(2009):L27-L30.

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