Zobrazeno 1 - 10
of 124
pro vyhledávání: '"ZONG, Weikai"'
As mixed with real pulsations, the reflection of super-Nyquist frequencies (SNFs) pose a threat to asteroseismic properties. Although SNFs have been studied in several pulsating stars, a systematic survey remains scarcely explored. Here we propose a
Externí odkaz:
http://arxiv.org/abs/2411.12481
Autor:
Liu, Genghao, Tang, Baitian, Ren, Liangliang, Li, Chengyuan, Cheng, Sihao, Zong, Weikai, Fu, Jianning, Ma, Bo, Xu, Cheng, Hu, Yiming
Publikováno v:
A&A 690, A29 (2024)
Close white dwarf binaries (CWDBs) are considered to be progenitors of several exotic astronomical phenomena (e.g., type Ia supernovae, cataclysmic variables). These violent events are broadly used in studies of general relativity and cosmology. Howe
Externí odkaz:
http://arxiv.org/abs/2408.03038
Autor:
Su, Wenchao, Charpinet, Stéphane, Latour, Marilyn, Zong, Weikai, Green, Elizabeth M, Li, Gang
We present the detailed analysis of a new hybrid (p- and g-mode) sdB pulsator, TIC441725813 (TYC 4427-1021-1), discovered and monitored by TESS over 670 days. The TESS light curves available for this star were analysed using prewhitening techniques t
Externí odkaz:
http://arxiv.org/abs/2407.17887
Accurate determination of the stellar atmospheric parameters of RR Lyrae stars (RRLs) requires short individual exposures of the spectra to mitigate pulsation effects. We present improved template matching methods to determine the stellar atmospheric
Externí odkaz:
http://arxiv.org/abs/2404.15411
Autor:
Zong, Peng, Fu, Jian-Ning, Su, Jie, Hu, Xueying, Zhang, Bo, Wang, Jiaxin, Liu, Gao-Chao, Meng, Gang, Catanzaro, Gianni, Frasca, Antonio, Wang, Haotian, Zong, Weikai
We conduct an asteroseismological analysis on the non-Blazhko ab-type RR Lyrae star EPIC 248846335 employing the Radial Stellar Pulsations (RSP) module of the Modules for Experiments in Stellar Astrophysics (MESA) based on the set of stellar paramete
Externí odkaz:
http://arxiv.org/abs/2403.14214
Autor:
Xing, Keyu, Zong, Weikai, Silvotti, Roberto, Fu, Jian-Ning, Charpinet, Stéphane, Cang, Tianqi, Hermes, J. J., Ma, Xiao-Yu, Wang, Haotian, Wang, Xuan, Wu, Tao, Wang, Jiaxin
Stellar flares are critical phenomena on stellar surfaces, which are closely tied to stellar magnetism. While extensively studied in main-sequence (MS) stars, their occurrence in evolved compact stars, specifically hot subdwarfs and white dwarfs (WDs
Externí odkaz:
http://arxiv.org/abs/2402.16018
Autor:
Guo, Jincheng, Chen, Yanhui, Yang, Yonghui, Wang, Xiaofeng, Lin, Jie, Ma, Xiao-Yu, Xi, Gaobo, Mo, Jun, Filippenko, Alexei V., Brink, Thomas G., Zong, Weikai, Yan, Huahui, Zhao, Jingkun, Zeng, Xiangyun, Chen, Zhihao, Esamdin, Ali, Guo, Fangzhou, Iskandar, Abdusamatjan, Jiang, Xiaojun, Li, Wenxiong, Liu, Cheng, Shi, Jianrong, Song, Xuan, Wang, Letian, Xiang, Danfeng, Yan, Shengyu, Zhang, Jicheng
The Tsinghua University-Ma Huateng Telescope for Survey (TMTS) has been constantly monitoring the northern sky since 2020 in search of rapidly variable stars. To find variable white dwarfs (WDs), the TMTS catalog is cross-matched with the WD catalog
Externí odkaz:
http://arxiv.org/abs/2401.14692
Autor:
Yang, Jia-Yi, Chen, Di-Chang, Xie, Ji-Wei, Zhou, Ji-Lin, Dong, Subo, Zhu, Zi, Zheng, Zheng, Liu, Chao, Zong, Weikai, Luo, Ali
One of the fundamental questions in astronomy is how planetary systems form and evolve. Measuring the planetary occurrence and architecture as a function of time directly addresses this question. In the fourth paper of the Planets Across Space and Ti
Externí odkaz:
http://arxiv.org/abs/2310.20113
Publikováno v:
A&A 680, A11 (2023)
K2 photometry is suitable for the exploitation of mode variability on short timescales in hot B subdwarf stars, which is important to constrain nonlinear quantities addressed by the stellar theory of high-order perturbation in the future. We analyze
Externí odkaz:
http://arxiv.org/abs/2309.11532
Autor:
Guo, Jincheng, Chen, Yanhui, Wang, Xiaofeng, Lin, Jie, Xi, Gaobo, Mo, Jun, Filippenko, Alexei V., Brink, Thomas, Ma, Xiao-Yu, Zong, Weikai, Yang, Yong, Zhao, Jingkun, Zeng, Xiangyun, Chen, Zhihao, Esamdin, Ali, Guo, Fangzhou, Iskandar, Abdusamatjan, Jiang, Xiaojun, Li, Wenxiong, Liu, Cheng, Shi, Jianrong, Song, Xuan, Wang, Letian, Xiang, Danfeng, Yan, Shengyu, Zhang, Jicheng, Yang, Yonghui
Tsinghua university-Ma Huateng Telescope for Survey (TMTS) aims to discover rapidly evolving transients by monitoring the northern sky. The TMTS catalog is cross-matched with the white dwarf (WD) catalog of Gaia EDR3, and light curves of more than a
Externí odkaz:
http://arxiv.org/abs/2305.11585