LAMOST J171013+532646: A detached short-period noneclipsing hot subdwarf + white dwarf binary
pc \), with a Gaia G-band magnitude of 12.59. This renders it conducive for continuous observations. The spectral temperature is around 25164 K, in agreement with fitting results 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 (\(M_1 = odot \)) and the compact object (\(M_2 = odot \)); the compact object likely is a WD. Furthermore, MESA models suggest that the sdB, with a helium core mass of 0.431 odot \) and a hydrogen envelope mass of \(1.3 odot \), 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.
Authors
- Haotong Zhang (ORCID: https://orcid.org/0000-0002-6617-5300)
- Yao Cheng
- Hailong Yuan (ORCID: https://orcid.org/0000-0002-4554-5579)
- Zhongrui Bai (ORCID: https://orcid.org/0000-0003-3884-5693)
- Junfeng Wang (ORCID: https://orcid.org/0000-0003-4874-0369)
- Yuji He (ORCID: https://orcid.org/0009-0008-0146-118X)
- Mingkuan Yang
- Zhenwei Li (ORCID: https://orcid.org/0000-0002-1421-4427)
- Xuefei Chen (ORCID: https://orcid.org/0000-0001-5284-8001)
- Yiqiao Dong (ORCID: https://orcid.org/0000-0002-6312-4444)
- X. T. Huang (ORCID: https://orcid.org/0000-0003-1734-1664)
- Mengxin 梦欣 Wang 汪 (ORCID: https://orcid.org/0009-0009-6931-2276)
Institutions
- Xiamen University (CN)
- Chinese Academy of Sciences (CN)
- Yunnan Observatories (CN)
- National Astronomical Observatories (CN)
- University of Chinese Academy of Sciences (CN)
- Xiamen University of Technology (CN)
Publication Details
- Journal
- Astronomy and Astrophysics
- Published
- 2024-12-18
- DOI
- https://doi.org/10.1051/0004-6361/202451415
- Citations
- 3
- Primary Topic
- Stellar, planetary, and galactic studies
- Type
- article
- Field-Weighted Citation Impact
- 0.99