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LAMOST J171013+532646: A detached short-period noneclipsing hot subdwarf plus white dwarf binary

文献类型：期刊论文

作者Yang, Mingkuan1,2,4; Yuan, Hailong4; Bai, Zhongrui4; Li ZW(李振威)2,5; He, Yuji1,4; Huang, Xin1,4; Dong, Yiqiao4; Wang, Mengxin4; Chen XF(陈雪飞)2,5; Wang, Junfeng3
刊名ASTRONOMY & ASTROPHYSICS
出版日期2025-01-29
卷号693
关键词binaries: general subdwarfs white dwarfs
ISSN号0004-6361
DOI10.1051/0004-6361/202451415
产权排序第2完成单位
文献子类Article
英文摘要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.
学科主题天文学 ; 恒星与银河系
URL标识查看原文
出版地17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A, FRANCE
WOS关键词B-STARS ; DATA RELEASE ; CONVECTIVE BOUNDARIES ; LIGHT CURVES ; MODULES ; MESA ; GAIA ; DISCOVERY ; COMPANION ; EVOLUTION
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]
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:001410150100006
出版者EDP SCIENCES S A
资助机构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]
版本出版稿
源URL[http://ir.ynao.ac.cn/handle/114a53/28057]  
专题云南天文台_大样本恒星演化研究组
作者单位1.School of Astronomy and Space Science, University of Chinese Academy of Sciences, Beijing 100049, China;
2.International Centre of Supernovae, Yunnan Key Laboratory, Kunming 650216, People’s Republic of China;
3.Department of Astronomy, Xiamen University, Xiamen Fujian 361005, China,
4.Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100101, China;
5.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011, 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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