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Hot subdwarfs from the surviving companions of the white dwarf plus main-sequence channel of Type Ia supernovae
Meng XC(孟祥存)1,2,3; Luo, Yang-Ping4
发表期刊MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
2021-11
卷号507期号:3页码:4603-4617
DOI10.1093/mnras/stab2369
产权排序第1完成单位
收录类别SCI ; EI
关键词stars: chemically peculiar stars: kinematics and dynamics subdwarfs supernovae: general
摘要

Some surviving companions of Type Ia supernovae (SNe Ia) from the white dwarf + main-sequence (WD+MS) channel may evolve to hot subdwarfs. In this paper, we perform stellar evolution calculations for the surviving companions of close WD+MS systems in the spin-up/spin-down model and the canonical non-rotating model. This enables us to map out the initial parameter spaces in the orbital period-secondary-mass plane in which the surviving companions can evolve to hot subdwarfs. Based on these results, we carry out a series of binary population synthesis calculations to obtain the Galactic birth rate of hot subdwarfs from the WD+MS channel, which is 2.3-6x10(-4)yr(-1) for the spin-up/spin-down model and 0.7-3x10(-4)yr(-1) for the canonical non-rotating model. We also show the distributions of some integral properties of the hot subdwarfs, for example the mass and space velocity, for different models. In addition, by comparing our results with observations of intermediate helium-rich (iHe-rich) hot subdwarfs, we find that the hot subdwarfs from the WD+MS channel may explain some observational features of the iHe-rich hot subdwarfs, especially those from the spin-up/spin-down model. Although we expect that the SN Ia channel will contribute only a small fraction of the iHe-rich hot subdwarf population, some of these may help to explain cases with unusual kinematics.

资助项目Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC)[11973080] ; Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC)[11733008] ; Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC)[U173111] ; China Manned Space Project[CMSCSST-2021-B07] ; Yunnan Ten Thousand Talents Plan - Young & Elite Talents Project ; CAS 'Light of West China' Program
项目资助者Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC)[11973080, 11733008, U173111] ; China Manned Space Project[CMSCSST-2021-B07] ; Yunnan Ten Thousand Talents Plan - Young & Elite Talents Project ; CAS 'Light of West China' Program
语种英语
学科领域天文学 ; 恒星与银河系 ; 恒星物理学 ; 恒星形成与演化
学科门类理学 ; 理学::天文学
文章类型Article
出版者OXFORD UNIV PRESS
出版地GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
ISSN0035-8711
URL查看原文
WOS记录号WOS:000708848000096
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]LARGE-AMPLITUDE PULSATORS ; SINGLE-DEGENERATE CHANNEL ; BLUE HOOK STARS ; COMMON-ENVELOPE ; GAIA DR2 ; B-STARS ; RICH SUBDWARFS ; MASS ; PROGENITORS ; EVOLUTION
EI入藏号20221712014469
EI主题词White dwarfs
EI分类号657.2 Extraterrestrial Physics and Stellar Phenomena - 931.1 Mechanics
引用统计
被引频次:10[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
版本出版稿
条目标识符http://ir.ynao.ac.cn/handle/114a53/24629
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Meng XC(孟祥存)
作者单位1.Yunnan Observatories, Chinese Academy of Sciences, 650216 Kunming, China;
2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, 650216 Kunming, China;
3.Center for Astronomical Mega-Science, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing 100012, China;
4.Department of Astronomy, China West Normal University, Nanchong 637002, China
第一作者单位中国科学院云南天文台
通讯作者单位中国科学院云南天文台
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GB/T 7714
Meng XC,Luo, Yang-Ping. Hot subdwarfs from the surviving companions of the white dwarf plus main-sequence channel of Type Ia supernovae[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2021,507(3):4603-4617.
APA Meng XC,&Luo, Yang-Ping.(2021).Hot subdwarfs from the surviving companions of the white dwarf plus main-sequence channel of Type Ia supernovae.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,507(3),4603-4617.
MLA Meng XC,et al."Hot subdwarfs from the surviving companions of the white dwarf plus main-sequence channel of Type Ia supernovae".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 507.3(2021):4603-4617.
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