| LAMOST J171013+532646: A detached short-period noneclipsing hot subdwarf plus white dwarf binary | |
Yang, Mingkuan1,3,4; Yuan, Hailong1; Bai, Zhongrui1; Li ZW(李振威)2,4 ; He, Yuji1,3; Huang, Xin1,3; Dong, Yiqiao1; Wang, Mengxin1; Chen XF(陈雪飞)2,4; Wang, Junfeng5; Cheng, Yao5; Zhang, Haotong1
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| 发表期刊 | ASTRONOMY & ASTROPHYSICS
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| 2025-01-29 | |
| 卷号 | 693 |
| DOI | 10.1051/0004-6361/202451415 |
| 产权排序 | 第2完成单位 |
| 收录类别 | SCI ; EI |
| 关键词 | binaries: general subdwarfs white dwarfs |
| 摘要 | We present an analysis of LAMOST J171013.211+532646.04 (hereafter J1710), a binary system comprising a hot subdwarf B star (sdB) and a white dwarf (WD) companion. Multi-epoch spectroscopy revealed an orbital period of 109.20279 minutes, consistent with TESS and ZTF photometric data. This means that this is the sixth detached system known to harbor a WD companion with a period shorter than two hours. J1710 is remarkably close to Earth. It is situated at a distance of only 350.68(-4.21)(+4.20) pc, with a Gaia G-band magnitude of 12.59. This renders it conducive for continuous observations. The spectral temperature is around 25 164 K, in agreement with fitting results (25301(-743)(+839) K) based on a spectral energy distribution. The TESS light curve displays ellipsoidal variation and Doppler beaming without eclipsing features. Through fitting the TESS light curve using the Wilson-Devinney code, we determined the masses for the sdB (M-1= 0.44(-0.07)(+0.06) M-circle dot) and the compact object (M-2= 0.54(-0.07)(+0.10) M-circle dot); the compact object likely is a WD. Furthermore, MESA models suggest that the sdB, with a helium core mass of 0.431 M-circle dot and a hydrogen envelope mass of 1.3 x 10(-3) M-circle dot, is in the early helium main-sequence phase. The MESA binary evolution shows that the J1710 system is expected to evolve into a double WD system. This means that it is an important source of low-frequency gravitational waves. |
| 资助项目 | National Natural Science Foundation of China[11873066]; National Key R&D Program of China[2021YFA1600403/1]; National Key R&D Program of China[2021YFA1600400]; Youth Innovation Promotion Association of the CAS[20200060]; National Natural Science Foundation of China (NSFC)[12288102]; National Natural Science Foundation of China (NSFC)[12473034]; National Natural Science Foundation of China (NSFC)[12125303]; National Natural Science Foundation of China (NSFC)[12090040/3]; Yunnan Fundamental Research Projects[202401AT070139]; Yunnan Fundamental Research Projects[202201AU070234]; Yunnan Fundamental Research Projects[202101AU070276]; Natural Science Foundation of Yunnan Province[202201BC070003]; Natural Science Foundation of Yunnan Province[202001AW070007]; International Centre of Supernovae, Yunnan Key Laboratory[202302AN360001]; The Yunnan Revitalization Talent Support Program-Science and Technology Champion Project[202305AB350003]; China Manned Space Project; Guoshoujing Telescope (the Large Sky Area Multi-Object Fiber Spectroscopic Telescope LAMOST); National Development and Reform Commission; Chinese Academy of Sciences - TAP member institutes[CTAP2022-A0018] |
| 项目资助者 | National Natural Science Foundation of China[11873066] ; National Key R&D Program of China[2021YFA1600403/1, 2021YFA1600400] ; Youth Innovation Promotion Association of the CAS[20200060] ; National Natural Science Foundation of China (NSFC)[12288102, 12473034, 12125303, 12090040/3] ; Yunnan Fundamental Research Projects[202401AT070139, 202201AU070234, 202101AU070276] ; Natural Science Foundation of Yunnan Province[202201BC070003, 202001AW070007] ; International Centre of Supernovae, Yunnan Key Laboratory[202302AN360001] ; The Yunnan Revitalization Talent Support Program-Science and Technology Champion Project[202305AB350003] ; China Manned Space Project ; Guoshoujing Telescope (the Large Sky Area Multi-Object Fiber Spectroscopic Telescope LAMOST) ; National Development and Reform Commission ; Chinese Academy of Sciences - TAP member institutes[CTAP2022-A0018] |
| 语种 | 英语 |
| 学科领域 | 天文学 ; 恒星与银河系 |
| 文章类型 | Article |
| 出版者 | EDP SCIENCES S A |
| 出版地 | 17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A, FRANCE |
| ISSN | 0004-6361 |
| URL | 查看原文 |
| WOS记录号 | WOS:001410150100006 |
| WOS研究方向 | Astronomy & Astrophysics |
| WOS类目 | Astronomy & Astrophysics |
| 关键词[WOS] | B-STARS ; DATA RELEASE ; CONVECTIVE BOUNDARIES ; LIGHT CURVES ; MODULES ; MESA ; GAIA ; DISCOVERY ; COMPANION ; EVOLUTION |
| EI入藏号 | 20250617841933 |
| EI主题词 | White dwarfs |
| EI分类号 | 1301.1.3 - 1301.1.5 - 1302.1.2 - 301 - 744.5 Free Electron Lasers - 804 Chemical Products Generally |
| 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/114a53/28057 |
| 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.School of Astronomy and Space Science, University of Chinese Academy of Sciences, Beijing 100049, China; 4.International Centre of Supernovae, Yunnan Key Laboratory, Kunming 650216, People’s Republic of China; 5.Department of Astronomy, Xiamen University, Xiamen Fujian 361005, China, |
| 推荐引用方式 GB/T 7714 | Yang, Mingkuan,Yuan, Hailong,Bai, Zhongrui,et al. LAMOST J171013+532646: A detached short-period noneclipsing hot subdwarf plus white dwarf binary[J]. ASTRONOMY & ASTROPHYSICS,2025,693. |
| APA | Yang, Mingkuan.,Yuan, Hailong.,Bai, Zhongrui.,李振威.,He, Yuji.,...&Zhang, Haotong.(2025).LAMOST J171013+532646: A detached short-period noneclipsing hot subdwarf plus white dwarf binary.ASTRONOMY & ASTROPHYSICS,693. |
| MLA | Yang, Mingkuan,et al."LAMOST J171013+532646: A detached short-period noneclipsing hot subdwarf plus white dwarf binary".ASTRONOMY & ASTROPHYSICS 693(2025). |
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