| Orbital parameters for an ELM white dwarf with a white dwarf companion: LAMOST J033847.06+413424.2 | |
Yuan, Hailong1; Li ZW(李振威)2 ; Bai, Zhongrui1; Dong, Yiqiao1; Cheng, Yao3; Chen XF(陈雪飞)2; Zhang, Zhixiang3; Wang, Mengxin1; Yang, Mingkuan1; Huang, Xin1; He, Yuji1; Zhang, Liyun4; Wang, Junfeng3; Zhao, Yongheng1; Chu, Yaoquan5; Zhang, Haotong1
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| 发表期刊 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
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| 2023-10-20 | |
| 卷号 | 526期号:4页码:5471-5482 |
| DOI | 10.1093/mnras/stad3100 |
| 产权排序 | 第2完成单位 |
| 收录类别 | SCI ; EI |
| 关键词 | binaries (including multiple): close binaries: general binaries: spectroscopic white dwarfs |
| 摘要 | Double white dwarf systems are of great astrophysical importance in the field of gravitational wave and Type Ia supernova. While the binary fraction of CO core white dwarf is about a few per cents, the extremely low mass white dwarfs are all thought to be within binary systems. In this work, we report the orbital solution of a double degenerate system: J033847.06+413424.24, an extremely low mass He core white dwarf orbiting a CO core white dwarf. With LAMOST and P200, time domain spectroscopic observations have been made and spectral atmosphere parameters are estimated to be T-eff similar to 22 500 K and log g similar to 5.6 dex. Combining Gaia parallax, 3D extinction, and evolution tracks, we estimate a radius of similar to 0.12 R-circle dot and a mass of similar to 0.22 M-circle dot. With the 37 single exposure spectra, the radial velocities are measured and the orbital parameters are estimated to be P = 0.1253132(1) d, K1 = 289 +/- 4 km s(-1) and V-sys = -41 +/- 3 km s(-1). The radial velocity based system ephemeris is also provided. The light curves from several photometric surveys show no orbital modulation. The orbital solution suggests that the invisible companion has a minimum mass of about 0.60 M-circle dot and is similar to 0.79 M-circle dot for an inclination of 60.0 degrees, indicating most probably a CO core white dwarf. The system is expected to merge in about 1 Gyr. With present period and distance (similar to 596 pc) it cannot irradiate strong enough gravitational wave for LISA. More double degenerate systems are expected to be discovered and parametrized as the LAMOST survey goes on. |
| 资助项目 | National Development and Reform Commission; National Natural Science Foundation of China[12273056]; National Natural Science Foundation of China[12090041]; National Natural Science Foundation of China[11933004]; National Natural Science Foundation of China[11873066]; National Natural Science Foundation of China[11733008]; National Natural Science Foundation of China[12103086]; National Natural Science Foundation of China[12090040/12090043]; National Key R&D Program of China[2019YFA0405002]; National Key R&D Program of China[2022YFA1603002]; National Key R&D Program of China[2021YFA1600403]; Youth Innovation Promotion Association of the CAS[2020060]; National Science Fund for Distinguished Young Scholars[12125303]; Yunnan Fundamental Research Projects[202101AU070276]; China Manned Space Project[CMS-CSST-2021-A10] |
| 项目资助者 | National Development and Reform Commission ; National Natural Science Foundation of China[12273056, 12090041, 11933004, 11873066, 11733008, 12103086, 12090040/12090043] ; National Key R&D Program of China[2019YFA0405002, 2022YFA1603002, 2021YFA1600403] ; Youth Innovation Promotion Association of the CAS[2020060] ; National Science Fund for Distinguished Young Scholars[12125303] ; Yunnan Fundamental Research Projects[202101AU070276] ; China Manned Space Project[CMS-CSST-2021-A10] |
| 语种 | 英语 |
| 学科领域 | 天文学 |
| 文章类型 | Article |
| 出版者 | OXFORD UNIV PRESS |
| 出版地 | GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND |
| ISSN | 0035-8711 |
| URL | 查看原文 |
| WOS记录号 | WOS:001092001800009 |
| WOS研究方向 | Astronomy & Astrophysics |
| WOS类目 | Astronomy & Astrophysics |
| 关键词[WOS] | EXTREMELY LOW-MASS ; HOT SUBDWARF STARS ; DATA RELEASE ; GAIA DR2 ; LIGHT CURVES ; B-STARS ; BINARY ; CATALOG ; EVOLUTION ; DISCOVERY |
| EI入藏号 | 20234715092521 |
| EI主题词 | White dwarfs |
| EI分类号 | 657.2 Extraterrestrial Physics and Stellar Phenomena - 741.1 Light/Optics - 931.5 Gravitation, Relativity and String Theory |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 版本 | 出版稿 |
| 条目标识符 | http://ir.ynao.ac.cn/handle/114a53/26528 |
| 专题 | 大样本恒星演化研究组 |
| 作者单位 | 1.Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100101, China; 2.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011, China; 3.Department of Astronomy, Xiamen University, Xiamen 361005, China; 4.Department of Physics and Astronomy, Guizhou University, Guiyang 550025, China; 5.Department of Astronomy, University of Science and Technology of China, Hefei 230026, China |
| 推荐引用方式 GB/T 7714 | Yuan, Hailong,Li ZW,Bai, Zhongrui,et al. Orbital parameters for an ELM white dwarf with a white dwarf companion: LAMOST J033847.06+413424.2[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2023,526(4):5471-5482. |
| APA | Yuan, Hailong.,李振威.,Bai, Zhongrui.,Dong, Yiqiao.,Cheng, Yao.,...&Zhang, Haotong.(2023).Orbital parameters for an ELM white dwarf with a white dwarf companion: LAMOST J033847.06+413424.2.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,526(4),5471-5482. |
| MLA | Yuan, Hailong,et al."Orbital parameters for an ELM white dwarf with a white dwarf companion: LAMOST J033847.06+413424.2".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 526.4(2023):5471-5482. |
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| Orbital parameters f（4371KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | 浏览 请求全文 | |
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