YNAO OpenIR  > 大样本恒星演化研究组
Hot Subdwarf Stars as the Donors of Type Ia Supernova Progenitors
Wang B(王博)1,2; Han ZW(韩占文)1,2
会议录名称Astronomical Society of the Pacific (ASP) Conference Series - 6th Meeting on Hot Subdwarf Stars and Related Objects
2014-04
卷号481
页码233-236
会议录编者/会议主办者VanGrootel, V; Green, EM; Fontaine, G; Charpinet, S
产权排序第1完成单位
收录类别CPCI
会议名称6th Meeting on Hot Subdwarf Stars and Related Objects
会议日期2013-05-19
会议地点Steward Observatory, University of Arizona, Tucson, Arizona, USA
会议赞助商Steward Observ; Univ Arizona Fdn
摘要

Type Ia supernovae (SNe Ia) play an important role in astrophysics and are crucial for the studies of stellar evolution, galaxy evolution and cosmology. They are generally thought to be thermonuclear explosions of accreting carbon-oxygen white dwarfs (CO WDs) in close binaries, however, the nature of the mass donor star is still unclear. It has recently been proposed that one sub-class of SNe Ia is sufficiently both distinct and common to be classified separately from the bulk of SNe Ia, with a suggested class name of “type Iax supernovae” (SN Iax), after SN 2002cx. We show that the population properties of this class can be understood if the events originate from helium double-detonation sub-Chandrasekhar mass explosions, in which a CO WD accumulates a helium layer from a non-degenerate hot subdwarf star. We have incorporated detailed binary evolution calculations for the progenitor systems into a binary population synthesis model to obtain birthrates and delay times for such events. The predicted Galactic event rate is in good agreement with the measured rates of SNe Iax. In addition, predicted delay times are consistent with the fact that SNe Iax have so far only been discovered in late-type galaxies. Based on the CO WD mass at explosion, we also estimate the distribution of resulting SN brightness, which can reproduce the empirical diversity of SNe Iax.

资助项目NSFC[11033008, 11103072] ; CAS[KJCX2-YW-T24] ; CAS (Western Light Youth Project)
项目资助者NSFC ; CAS ; CAS (Western Light Youth Project)
语种英语
学科领域天文学 ; 天体物理学 ; 恒星与银河系
学科门类理学 ; 理学::天文学
文章类型Proceedings Paper
出版者Astronomical Society of the Pacific
出版地San Francisco
ISBN号978-1-58381-846-6
URL查看原文
归档日期2014-09-01
WOS记录号WOS:000398425600032
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]Stellar Evolution ; White-dwarfs ; Delay Times ; Mass ; Channel ; Binary ; Models
引用统计
文献类型会议论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/9650
专题大样本恒星演化研究组
中国科学院天体结构与演化重点实验室
通讯作者Wang B(王博)
作者单位1.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011, China
2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650011, China
推荐引用方式
GB/T 7714
Wang B,Han ZW. Hot Subdwarf Stars as the Donors of Type Ia Supernova Progenitors[C]//VanGrootel, V; Green, EM; Fontaine, G; Charpinet, S. San Francisco:Astronomical Society of the Pacific,2014:233-236.
条目包含的文件
文件名称/大小 文献类型 版本类型 开放类型 使用许可
Hot Subdwarf Stars a(215KB)会议论文 开放获取CC BY-NC-SA浏览 请求全文
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Wang B(王博)]的文章
[Han ZW(韩占文)]的文章
百度学术
百度学术中相似的文章
[Wang B(王博)]的文章
[Han ZW(韩占文)]的文章
必应学术
必应学术中相似的文章
[Wang B(王博)]的文章
[Han ZW(韩占文)]的文章
相关权益政策
暂无数据
收藏/分享
文件名: Hot Subdwarf Stars as the Donors of Type Ia Supernova Progenitors.pdf
格式: Adobe PDF
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。