Institutional Repository of Optical Astronomy Research Laboratory
| Two dynamically discovered compact object candidate binary systems from LAMOST low-resolution survey | |
Qi, Senyu1; Gu, Wei-Min1; Zhang, Zhi-Xiang1; Yi, Tuan2; Liu, Jin-Zhong3 ; Zheng, Ling-Lin1
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| 2024-07-09 | |
| Source Publication | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
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| ISSN | 0035-8711 |
| Volume | 532Issue:2Pages:1718-1728 |
| Contribution Rank | 3 |
| Abstract | We report two binary systems, LAMOST J035540 + 381550 (hereafter J035540) and LAMOST J035916 + 400732 (hereafter J035916), identified through the Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) low-resolution survey (LRS). Each of these two systems contains an M-type star orbiting with a invisible compact object candidate. Follow-up spectroscopic observations of Palomar 200-in. telescope (P200) enhance radial velocity measurements. We use radial velocities from LAMOST and P200, as well as light curves from Zwicky Transient Facility (ZTF) to constrain orbital parameters. The masses of the visible M-type stars are estimated by fitting the MIST isochrones and spectral energy distributions. The mass functions for the unseen companions are: 0.22 +/- 0.01 M-circle dot for J035540 and 0.16 +/- 0.01 M(circle dot)for J035916. With the orbital and stellar parameters derived above and assuming the orbital inclination is 90 degrees (edge-on), we find that the minimum masses of the invisible companions exceeds that of the visible stars. The single-lined feature and the dynamical evidence suggest the presence of compact objects. J035540's ZTF light curve, modelled with phoebe, yields a compact object mass of 0.70(-0.05)(+0.12)M(circle dot). For J035916, ellipsoidal modulation analysis constrains the light-curve amplitude, yielding a compact object mass range of 0.57-0.90M(circle dot). The mass estimates indicate that both are likely white dwarfs. These findings underscore the efficiency of optical time-domain surveys and dynamical methods in identifying faint, massive white dwarfs, along with other compact objects in binaries. |
| Keyword | techniques: photometric techniques: radial velocities binaries: close binaries: spectroscopic white dwarfs |
| DOI | 10.1093/mnras/stae1590 |
| Indexed By | SCI |
| Language | 英语 |
| WOS Keyword | MAIN-SEQUENCE BINARIES ; BLACK-HOLE CANDIDATES ; FINAL MASS RELATION ; TIME-DOMAIN SURVEY ; WHITE-DWARF ; PATHWAYS SURVEY ; NEUTRON-STAR ; MODEL ATMOSPHERES ; DATA RELEASE ; SPECTROSCOPIC BINARIES |
| Funding Project | National Key R&D Program of China[2023YFA1607901] ; National Key R&D Program of China[2021YFA1600401] ; National Natural Science Foundation of China[11925301] ; National Natural Science Foundation of China[12033006] ; National Natural Science Foundation of China[12221003] ; National Natural Science Foundation of China[12263003] ; China National Postdoctoral Program for Innovation Talents[BX20230020] ; Tianshan Talent Training Program[2023TSYCCX0101] ; China Manned Space Project ; Telescope Access Program (TAP)[CTAP2023-B0098] |
| WOS Research Area | Astronomy & Astrophysics |
| WOS Subject | Astronomy & Astrophysics |
| WOS ID | WOS:001265567200002 |
| Publisher | OXFORD UNIV PRESS |
| Funding Organization | National Key R&D Program of China ; National Natural Science Foundation of China ; China National Postdoctoral Program for Innovation Talents ; Tianshan Talent Training Program ; China Manned Space Project ; Telescope Access Program (TAP) |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.xao.ac.cn/handle/45760611-7/6856 |
| Collection | 光学天文与技术应用研究室_变星研究团组 |
| Corresponding Author | Gu, Wei-Min |
| Affiliation | 1.Xiamen Univ, Dept Astron, Xiamen 361005, Fujian, Peoples R China 2.Peking Univ, Sch Phys, Dept Astron, Beijing 100871, Peoples R China 3.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Xinjiang, Peoples R China |
| Recommended Citation GB/T 7714 | Qi, Senyu,Gu, Wei-Min,Zhang, Zhi-Xiang,et al. Two dynamically discovered compact object candidate binary systems from LAMOST low-resolution survey[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2024,532(2):1718-1728. |
| APA | Qi, Senyu,Gu, Wei-Min,Zhang, Zhi-Xiang,Yi, Tuan,Liu, Jin-Zhong,&Zheng, Ling-Lin.(2024).Two dynamically discovered compact object candidate binary systems from LAMOST low-resolution survey.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,532(2),1718-1728. |
| MLA | Qi, Senyu,et al."Two dynamically discovered compact object candidate binary systems from LAMOST low-resolution survey".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 532.2(2024):1718-1728. |
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| Qi-2024-Two dynamica（2812KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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