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Helium Star Donor Channel to Type Ia Supernovae and Their Surviving Companion Stars
Wang B(王博)1,2; Han ZW(韩占文)1,2
Source PublicationIAU Symposium Proceedings Series - BINARY PATHS TO TYPE IA SUPERNOVAE EXPLOSIONS
2013
Volume281
Pages205-208
DOI10.1017/S1743921312015037
Author of SourceDi Stefano, R; Orio, M; Moe, M
Contribution Rank第1完成单位
Indexed ByCPCI
Conference Name281st Symposium of the International-Astronomical-Union
Conference Date2011-07-04
Conference PlacePadova, ITALY
Conference SponsorINAF; City Padova; Univ Padova, Dept Astronomy; INAF Padova Observ; ANEMOS
KeywordBinaries: Close Supernovae: General Stars: Evolution White Dwarfs
Abstract

Employing Eggleton's stellar evolution code and assuming optically thick winds, we systematically studied the He star donor channel of Type Ia supernovae (SNe Ia), in which a carbon-oxygen white dwarf (WD) accretes material from a He main-sequence star or a He subgiant to increase its mass to the Chandrasekhar mass. We mapped out the initial parameters for producing SNe Ia in the orbital period secondary mass plane for various WD masses from this channel. Based on a detailed binary population synthesis approach, we find that this channel can produce SNe Ia with short delay times (similar to 100 Myr) implied by recent observations. We derived many properties of the surviving companions of this channel after SN explosion, which can be tested by future observations. We also find that the surviving companions from the SN explosion scenario have a high spatial velocity (>400 km/s), which could be an alternative origin for hypervelocity stars (HVSs), especially for HVSs such as US 708.

Funding ProjectNatural Science Foundation of China[10821061] ; Natural Science Foundation of China[11033008] ; Natural Science Foundation of China[2007CB815406] ; Natural Science Foundation of China[2009CB824800]
Funding OrganizationNatural Science Foundation of China
Language英语
Subject Area天文学 ; 天体物理学 ; 恒星与银河系
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeProceedings Paper
PublisherCAMBRIDGE UNIV PRESS
Publication PlaceTHE PITT BUILDING, TRUMPINGTON ST, CAMBRIDGE CB2 1RP, CAMBS, ENGLAND
ISBN978-1-107-01981-2
ISSN1743-9213
URL查看原文
Archive Date2013-03-11
WOS IDWOS:000316706100049
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordLong Delay Times ; White-dwarf ; Progenitors ; Model ; Evolution ; Populations ; Binaries ; Systems
Citation statistics
Document Type会议论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/257
Collection大样本恒星演化研究组
Corresponding AuthorWang B(王博)
Affiliation1.National Astronomical Observatories/Yunnan Observatory, CAS, Kunming, 650011, China
2.Key Laboratory for the Structure and Evolution of Celestial Objects, CAS, Kunming, 650011, China
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Corresponding Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Wang B,Han ZW. Helium Star Donor Channel to Type Ia Supernovae and Their Surviving Companion Stars[C]//Di Stefano, R; Orio, M; Moe, M. THE PITT BUILDING, TRUMPINGTON ST, CAMBRIDGE CB2 1RP, CAMBS, ENGLAND:CAMBRIDGE UNIV PRESS,2013:205-208.
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