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题名:
The surviving companions in type Ia supernova remnants
作者: Chen LQ(陈俐鲭)1,2,3; Meng XC(孟祥存)1,2,4; Han ZW(韩占文)1,2,4
刊名: RESEARCH IN ASTRONOMY AND ASTROPHYSICS
出版日期: 2017-08-01
卷号: 17, 期号:8
DOI: 10.1088/1674-4527/17/8/83
学科分类: 天文学
产权排序: 第1完成单位
收录类别: SCI
通讯作者: Chen, Li-Qing(Chinese Acad Sci, Yunnan Observ, Kunming 650216, Yunnan, Peoples R China)
关键词: stars: evolution ; binaries: symbiotic ; supernovae: individual (SN 1604, SN 1006)
英文摘要: The single-degenerate (SD) model is one of the most popular progenitor models of type Ia supernovae (SNe Ia), in which the companion star can survive after an SN Ia explosion and show peculiar properties. Therefore, searching for the surviving companion in type la supernova remnants (SNRs) is a potential method to verify the SD model. In the SN 1604 remnant (Kepler's SNR), although Chandra X-ray observation suggests that the progenitor is most likely a WD+AGB system, the surviving companion has not been found. One possible reason is rapid rotation of the white dwarf (WD), causing explosion of the WD to be delayed for a spin-down timescale, and then the companion evolved into a WD before the supernova explosion, so the companion is too dim to be detected. We aim to verify this possible explanation by carrying out binary evolution calculations. In this paper, we use Eggleton's stellar evolution code to calculate the evolution of binaries consisting of a WD+red giant (RG). We assume that the rapidly rotating WD can continuously increase its mass when its mass exceeds the Chandrasekhar mass limit (M-ch = 1.378 M-circle dot) until the mass-transfer rate decreases to be lower than a critical value. Eventually, we obtain the masses of a WD in the range 1.378 M-circle dot to 2.707 M-circle dot. We also show that if the spin-down time is less than 10(6) yr, the companion star will be very bright and easily observed; but if the spin-down time is as long as similar to 10(7) yr, the luminosities of the surviving companion would be lower than the detection limit. Our simulation provides guidance in hunting for the surviving companion stars in SNRs, and the fact that no surviving companion has been found in Kepler's SNR may not be definite evidence disfavoring the SD origin of Kepler's SN.
项目资助者: NSFC(11522327, 11473036, 11521303, 11390374) ; CAS "Light of West China" Program, CAS(KJZD-EW-M06-01) ; Science and Technology Innovation Talent Program of Yunnan Province(2013HA005)
语种: 英语
原文出处: 查看原文
ISSN号: 1674-4527
文章类型: Article
WOS标题词: Science & Technology ; Physical Sciences
研究领域[WOS]: Astronomy & Astrophysics
类目[WOS]: Astronomy & Astrophysics
关键词[WOS]: SINGLE-DEGENERATE CHANNEL ; ACCRETING WHITE-DWARFS ; STELLAR EVOLUTION ; LOW-MASS ; PROGENITORS ; BINARY ; STARS ; SYSTEMS ; OPACITIES ; MODELS
WOS记录号: WOS:000416068900007
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ynao.ac.cn/handle/114a53/12071
Appears in Collections:大样本恒星演化研究组_期刊论文
中国科学院天体结构与演化重点实验室_期刊论文

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作者单位: 1.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, China
2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650216, China
3.University of Chinese Academy of Sciences, Beijing 100049, China
4.Center for Astronomical Mega-Science, Chinese Academy of Sciences, Beijing 100012, China

Recommended Citation:
Chen LQ,Meng XC,Han ZW. The surviving companions in type Ia supernova remnants[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2017,17(8).
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