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A Highly Magnetic Ultramassive White Dwarf with a 23 minute Rotation Period

文献类型：期刊论文

作者Guo, Jincheng6; Wang, Xiaofeng5; Liu, Qichun5; Filippenko, Alexei V.9; Brink, Thomas G.9; Zhao, Jingkun7,8; Zhang, WeiKang9; Yang, Yi5; Lin, Jie4,10; Peng, Haowei5
刊名ASTROPHYSICAL JOURNAL
出版日期2026-02-20
卷号998期号:2页码:8
ISSN号0004-637X
DOI10.3847/1538-4357/ae3a7a
产权排序第8完成单位
通讯作者Wang, Xiaofeng(wang_xf@mail.tsinghua.edu.cn)
文献子类Article
英文摘要We present a physical characterization of Tsinghua University-Ma Huateng Telescope for Survey (TMTS) J00063798+3104160 (J0006), a rapidly rotating, ultramassive white dwarf (WD) identified in high-cadence light curves from the TMTS. A coherent 23 minute periodicity is detected in TMTS, Transiting Exoplanet Survey Satellite, and Zwicky Transient Facility photometry. A time series of low-resolution spectra with the Keck-I 10 m telescope reveals broad, shallow hydrogen absorption features indicative of an extreme magnetic field and shows no evidence for radial-velocity variations. Atmospheric modeling yields a magnetic field strength of similar to 250 MG, while Gaia astrometry and photometry imply a mass of 1.06 +/- 0.01 M circle dot. A significant infrared excess is detected in the Wide-field Infrared Survey Explorer W1 band and is well fitted by a 550 K blackbody, likely arising from residual material of a merger. We interpret the 23 minute photometric modulation as the rotation period of an isolated, massive WD formed likely through the merger of a double WD binary. With one of the shortest rotation periods known among candidate merger remnants and with constraints from a deep Einstein Probe X-ray nondetection, J0006 provides a rare and important observational window into the poorly explored intermediate stages of postmerger evolution.
学科主题天文学 ; 恒星与银河系
URL标识查看原文
出版地No.2 The Distillery, Glassfields, Avon Street, Bristol, ENGLAND
WOS关键词100 PC SAMPLE ; S ROTATION ; FIELDS ; PERFORMANCE ; EVOLUTION ; STARS
资助项目MOST divided by National Natural Science Foundation of China (NSFC)[12288102]; MOST divided by National Natural Science Foundation of China (NSFC)[12203006]; MOST divided by National Natural Science Foundation of China (NSFC)[12033003]; MOST divided by National Natural Science Foundation of China (NSFC)[12273055]; MOST divided by National Natural Science Foundation of China (NSFC)[12503027]; MOST divided by National Natural Science Foundation of China (NSFC)[and 12422305]
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:001692816300001
出版者IOP Publishing Ltd
资助机构MOST divided by National Natural Science Foundation of China (NSFC)[12288102, 12203006, 12033003, 12273055, 12503027, and 12422305]
版本出版稿
源URL[http://ir.ynao.ac.cn/handle/114a53/28927]  
专题云南天文台_大样本恒星演化研究组
通讯作者Wang, Xiaofeng
作者单位1.CSST Science Center for the Guangdong-Hong Kong-Macau Greater Bay Area, Zhuhai 519082, People’s Republic of China;
2.Samarkand State University, 15, University Boulevard, 140104, Samarkand, Uzbekistan;
3.School of Physics and Astronomy, Sun Yat-sen University, Zhuhai 519082, People’s Republic of China;
4.CAS Key laboratory for Research in Galaxies and Cosmology, Department of Astronomy, University of Science and Technology of China, Hefei, 230026, People’s Republic of China;
5.Physics Department, Tsinghua University, Beijing 100084, People’s Republic of China; wang_xf@mail.tsinghua.edu.cn;
6.Department of Scientific Research, Beijing Planetarium, Xizhimenwai Road, Beijing 100044, People’s Republic of China; Andrewbooksatnaoc@gmail.com;
7.School of Astronomy and Space Science, University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China;
8.Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100101, People’s Republic of China;
9.Department of Astronomy, University of California, Berkeley, CA 94720-3411, USA;
10.School of Astronomy and Space Sciences, University of Science and Technology of China, Hefei 230026, People’s Republic of China;
推荐引用方式
GB/T 7714		 Guo, Jincheng,Wang, Xiaofeng,Liu, Qichun,et al. A Highly Magnetic Ultramassive White Dwarf with a 23 minute Rotation Period[J]. ASTROPHYSICAL JOURNAL,2026,998(2):8.
APA Guo, Jincheng.,Wang, Xiaofeng.,Liu, Qichun.,Filippenko, Alexei V..,Brink, Thomas G..,...&Zhang, Jicheng.(2026).A Highly Magnetic Ultramassive White Dwarf with a 23 minute Rotation Period.ASTROPHYSICAL JOURNAL,998(2),8.
MLA Guo, Jincheng,et al."A Highly Magnetic Ultramassive White Dwarf with a 23 minute Rotation Period".ASTROPHYSICAL JOURNAL 998.2(2026):8.

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