Institutional Repository of Optical Astronomy Research Laboratory
| Properties and asteroseismological analysis of a new ZZ ceti discovered by TMTS | |
Guo, Jincheng1; Chen, Yanhui2; Wang, Xiaofeng1,3,4; Lin, Jie3,4; Xi, Gaobo3,4; Mo, Jun3,4; Filippenko, Alexei, V5; Brink, Thomas5; Ma, Xiao-Yu6; Zong, Weikai6; Yang, Yong7,8; Zhao, Jingkun7,8; Zeng, Xiangyun9; Chen, Zhihao3,4; Esamdin, Ali10 ; Guo, Fangzhou3,4; Iskandar, Abdusamatjan10; Jiang, Xiaojun; Li, Wenxiong11; Liu, Cheng1; Shi, Jianrong8; Song, Xuan; Wang, Letian10; Xiang, Danfeng3,4; Yan, Shengyu3,4; Zhang, Jicheng; Yang, Yonghui2,12
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| 2023-05-23 | |
| Source Publication | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
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| ISSN | 0035-8711 |
| Volume | 523Issue:1Pages:1591-1600 |
| Contribution Rank | 9 |
| Abstract | Tsinghua University-Ma Huateng Telescope for Survey (TMTS) aims to discover rapidly evolving transients by monitoring the northern sky. The TMTS catalogue is cross-matched with the white dwarf (WD) catalogue of Gaia EDR3, and light curves of more than a thousand WD candidates are obtained so far. Among them, the WD TMTS J23450729+5813146 is one interesting common source. Based on the light curves from the TMTS and follow-up photometric observations, periods of 967.113, 973.734, 881.525, 843.458, 806.916, and 678.273 s are identified. In addition, the TESS observations suggest a 3.39-h period but this can be attributed to the rotation of a comoving M dwarf located within 3 arcsec. The spectroscopic observation indicates that this WD is DA type with T-eff = 11 778 +/- 617 K, log g = 8.38 +/- 0.31, mass = 0.84 +/- 0.20 M-circle dot, and age = 0.704 +/- 0.377 Gyr. Asteroseismological analysis reveals a global best-fitting solution of T-eff = 12 110 +/- 10 K and mass = 0.760 +/- 0.005 M-circle dot, consistent with the spectral fitting results, and oxygen and carbon abundances in the core centre are 0.73 and 0.27, respectively. The distance derived from the intrinsic luminosity given by asteroseismology is 93 parsec, which is in agreement with the distance of 98 parsec from Gaia DR3. Additionally, kinematic study shows that this WD is likely a thick-disc star. The mass of its zero-age main sequence is estimated to be 3.08 M-circle dot and has a main sequence plus cooling age of roughly 900 Myr. |
| Keyword | stars: individual: TMTS J23450729+5813146 stars: oscillations stars: variables: general white dwarfs |
| DOI | 10.1093/mnras/stad1545 |
| Indexed By | SCI |
| Language | 英语 |
| WOS Keyword | DWARF COOLING SEQUENCE ; WHITE-DWARFS ; HYDROGEN-RICH ; STARS ; EVOLUTIONARY ; LAMOST ; CONSTRAINTS ; CATALOG ; MODE ; HALO |
| Funding Project | National Natural Science Foundation of China (NSFC)[12203006] ; National Natural Science Foundation of China (NSFC)[12033003] ; National Natural Science Foundation of China (NSFC)[12288102] ; National Natural Science Foundation of China (NSFC)[U1938113] ; National Natural Science Foundation of China (NSFC)[11773035] ; National Natural Science Foundation of China (NSFC)[12090044] ; National Natural Science Foundation of China (NSFC)[11833002] ; National Natural Science Foundation of China (NSFC)[11633002] ; Ma Huateng Foundation ; Scholar Program of Beijing Academy of Science and Technology[DZ:BS202002] ; Tencent Xplorer Prize ; CSST projects[CMS-CSST-2021-B03] ; Innovation Project of Beijing Academy of Science and Technology[11000023T000002062763-23CB059] ; Innovation Project of Beijing Academy of Science and Technology[11000022T000000443055] |
| WOS Research Area | Astronomy & Astrophysics |
| WOS Subject | Astronomy & Astrophysics |
| WOS ID | WOS:000999521900002 |
| Publisher | OXFORD UNIV PRESS |
| Funding Organization | National Natural Science Foundation of China (NSFC) ; Ma Huateng Foundation ; Scholar Program of Beijing Academy of Science and Technology ; Tencent Xplorer Prize ; CSST projects ; Innovation Project of Beijing Academy of Science and Technology |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.xao.ac.cn/handle/45760611-7/5500 |
| Collection | 光学天文与技术应用研究室 |
| Corresponding Author | Guo, Jincheng; Chen, Yanhui; Wang, Xiaofeng |
| Affiliation | 1.Be?ing Planetarium, Dept Sci Res, Xizhimenwai St, Be?ing 100044, Peoples R China 2.Chuxiong Normal Univ, Inst Astrophys, Chuxiong 675000, Peoples R China 3.Tsinghua Univ, Phys Dept, Be?ing 100084, Peoples R China 4.Tsinghua Univ, Tsinghua Ctr Astrophys, Be?ing 100084, Peoples R China 5.Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA 6.Be?ing Normal Univ, Dept Astron, Be?ing 100875, Peoples R China 7.Chinese Acad Sci, Key Lab Opt Astron, Natl Astron Observ, Be?ing 100012, Peoples R China 8.Univ Chinese Acad Sci, Be?ing 100049, Peoples R China 9.China Three Gorges Univ, Ctr Astron & Space Sci, Yichang 443000, Peoples R China 10.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China 11.Tel Aviv Univ, Sch Phys & Astron, IL-69978 Tel Aviv, Israel 12.Kunming Univ Sci & Technol, Fac Sci, Kunming 650093, Peoples R China |
| Recommended Citation GB/T 7714 | Guo, Jincheng,Chen, Yanhui,Wang, Xiaofeng,et al. Properties and asteroseismological analysis of a new ZZ ceti discovered by TMTS[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2023,523(1):1591-1600. |
| APA | Guo, Jincheng.,Chen, Yanhui.,Wang, Xiaofeng.,Lin, Jie.,Xi, Gaobo.,...&Yang, Yonghui.(2023).Properties and asteroseismological analysis of a new ZZ ceti discovered by TMTS.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,523(1),1591-1600. |
| MLA | Guo, Jincheng,et al."Properties and asteroseismological analysis of a new ZZ ceti discovered by TMTS".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 523.1(2023):1591-1600. |
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| Guo-2023-Properties （1546KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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