Is the X-ray pulsating companion of HD 49798 a possible type Ia supernova progenitor?
文献类型：期刊论文
| 作者 | Liu DD(刘栋栋)1,2,3 ; Zhou, WH3,4,5; Wu CY(吴程远)1,2,3; Wang B(王博)1,2
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| 刊名 | RESEARCH IN ASTRONOMY AND ASTROPHYSICS
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| 出版日期 | 2015-11 |
| 卷号 | 15期号:11页码:1813-1822 |
| ISSN号 | 1674-4527 |
| 关键词 | binaries: close stars: individual stars: evolution supernovae: general white dwarfs |
| 通讯作者 | Liu, DD (reprint author), Chinese Acad Sci, Yunnan Observ, Kunming 650216, Peoples R China. |
| 产权排序 | 第一完成单位 |
| 英文摘要 | HD 49798 (a hydrogen depleted subdwarf 06 star) with its massive white dwarf (WD) companion has been suggested to be a progenitor candidate of a type Ia supernova (SN Ia). However, it is still uncertain whether the companion of HD 49798 is a carbon-oxygen (CO) WD or an oxygen-neon (ONe) WD. A CO WD will explode as an SN Ia when its mass grows and approaches the Chandrasekhar limit, but the outcome of an accreting ONe WD is likely to be a neutron star. We generated a series of Monte Carlo calculations that incorperate binary population synthesis to simulate the formation of ONe WD + He star systems. We found that there is almost no orbital period as large as HD 49798 with its WD companion in these ONe WD + He star systems based on our simulations, which means that the companion of HD 49798 might not be an ONe WD. We suggest that the companion of HD 49798 is most likely a CO WD, which can be expected to increase its mass to the Chandrasekhar limit by accreting He-rich material from HD 49798. Thus, HD 49798 and its companion may produce an SN Ia as a result of its future evolution. |
| 学科主题 | Astronomy & Astrophysics |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | WHITE-DWARF BINARIES ; SINGLE-DEGENERATE CHANNEL ; MASS-RATIO DISTRIBUTION ; O-TYPE SUBDWARF ; HELIUM NOVA ; POPULATION SYNTHESIS ; SPECTROSCOPIC BINARIES ; STELLAR EVOLUTION ; SN PROGENITORS ; DELAY TIMES |
| 收录类别 | SCI |
| 原文出处 | http://iopscience.iop.org/article/10.1088/1674-4527/15/11/004/meta |
| 语种 | 英语 |
| WOS记录号 | WOS:000365467400004 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/4585]  |
| 专题 | 云南天文台_大样本恒星演化研究组 云南天文台_中国科学院天体结构与演化重点实验室 |
| 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.National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China 5.Yunnan Minzu University, Kunming 650031, China |
| 推荐引用方式 GB/T 7714 | Liu DD,Zhou, WH,Wu CY,et al. Is the X-ray pulsating companion of HD 49798 a possible type Ia supernova progenitor?[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2015,15(11):1813-1822. |
| APA | Liu DD,Zhou, WH,Wu CY,&Wang B.(2015).Is the X-ray pulsating companion of HD 49798 a possible type Ia supernova progenitor?.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,15(11),1813-1822. |
| MLA | Liu DD,et al."Is the X-ray pulsating companion of HD 49798 a possible type Ia supernova progenitor?".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 15.11(2015):1813-1822. |
入库方式： OAI收割
来源：云南天文台
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