Properties and asteroseismological analysis of a new ZZ ceti discovered by TMTS
文献类型：期刊论文
| 作者 | Guo, Jincheng12; Chen, Yanhui11; Wang, Xiaofeng9,10,12; Lin, Jie9,10; Xi, Gaobo9,10; Mo, Jun9,10; Filippenko, Alexei, V8; Brink, Thomas8; Ma, Xiao-Yu7; Zong, Weikai7 |
| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
 |
| 出版日期 | 2023-05-23 |
| 卷号 | 523期号:1页码:1591-1600 |
| ISSN号 | 0035-8711 |
| 关键词 | stars: individual: TMTS J23450729+5813146 stars: oscillations stars: variables: general white dwarfs |
| DOI | 10.1093/mnras/stad1545 |
| 通讯作者 | Guo, Jincheng(jcguo@bjp.org.cn) ; Chen, Yanhui(yanhuichen1987@126.com) ; Wang, Xiaofeng(wang_xf@mail.tsinghua.edu.cn) |
| 英文摘要 | 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. |
| WOS关键词 | DWARF COOLING SEQUENCE ; WHITE-DWARFS ; HYDROGEN-RICH ; STARS ; EVOLUTIONARY ; LAMOST ; CONSTRAINTS ; CATALOG ; MODE ; HALO |
| 资助项目 | 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研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| 出版者 | OXFORD UNIV PRESS |
| WOS记录号 | WOS:000999521900002 |
| 资助机构 | 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 |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/5499]  |
| 专题 | 研究单元未命名 |
| 通讯作者 | Guo, Jincheng; Chen, Yanhui; Wang, Xiaofeng |
| 作者单位 | 1.Kunming Univ Sci & Technol, Fac Sci, Kunming 650093, Peoples R China 2.Tel Aviv Univ, Sch Phys & Astron, IL-69978 Tel Aviv, Israel 3.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China 4.China Three Gorges Univ, Ctr Astron & Space Sci, Yichang 443000, Peoples R China 5.Univ Chinese Acad Sci, Be?ing 100049, Peoples R China 6.Chinese Acad Sci, Key Lab Opt Astron, Natl Astron Observ, Be?ing 100012, Peoples R China 7.Be?ing Normal Univ, Dept Astron, Be?ing 100875, Peoples R China 8.Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA 9.Tsinghua Univ, Tsinghua Ctr Astrophys, Be?ing 100084, Peoples R China 10.Tsinghua Univ, Phys Dept, Be?ing 100084, Peoples R China |
| 推荐引用方式 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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来源：新疆天文台
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