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pro vyhledávání: '"LI, Zhenwei"'
Double helium white dwarfs (He WDs) are one type of gravitational wave source and are greatly important in the studies of binary interaction, particularly in the common envelope (CE) ejection physics. Most double He WDs with mass ratios of q~1 are fo
Externí odkaz:
http://arxiv.org/abs/2410.14151
Autor:
Kovalev, Mikhail, Li, Zhenwei, Xiong, Jianping, Matekov, Azizbek, Bo, Zhang, Chen, Xuefei, Han, Zhanwen
We present a study of the detached eclipsing binary TV~Mon using spectra from the LAMOST medium-resolution survey and ASAS-SN, CoRoT photometry. We applied multiple-epochs spectral fitting to derive RV and spectral parameters. The analysis of eclipse
Externí odkaz:
http://arxiv.org/abs/2409.09902
Publikováno v:
The Astrophysical Journal, Volume 974, Issue 1, id.13, 13 pp. (2024) The Astrophysical Journal, Volume 974, Issue 1, id.13, 13 pp
Type Ia Supernovae (SNe Ia) discovered at redshift $z\lesssim2.5$ are presumed to be produced from Population (Pop) I/II stars. {In this work, we investigate the production of SNe Ia from Pop III binaries in the cosmological framework. We derive the
Externí odkaz:
http://arxiv.org/abs/2407.19357
Autor:
Luo, Changqing, Li, Jiao, Zheng, Chuanjie, Liu, Dongdong, Li, Zhenwei, Luo, Yangping, Nemeth, Peter, Zhang, Bo, Xiong, Jianping, Wang, Bo, Wang, Song, Bai, Yu, Li, Qingzheng, Wang, Pei, Han, Zhanwen, Liu, Jifeng, Huang, Yang, Chen, Xuefei, Liu, Chao
Although supernovae is a well-known endpoint of an accreting white dwarf, alternative theoretical possibilities has been discussing broadly, such as the accretion-induced collapse (AIC) event as the endpoint of oxygen-neon (ONe) white dwarfs, either
Externí odkaz:
http://arxiv.org/abs/2404.04835
Autor:
Li, Zhenwei, Chen, Xuefei
Publikováno v:
Results in Physics, 2024, Volume 59, article id. 107568
Gravitational Waves (GWs) provide a unique way to explore our Universe. The ongoing ground-based detectors, e.g., LIGO, Virgo, and KAGRA, and the upcoming next-generation detectors, e.g., Cosmic Explorer and Einstein Telescope, as well as the future
Externí odkaz:
http://arxiv.org/abs/2403.06358
Autor:
Li, Zhenwei, Zhang, Yangyang, Chen, Hailiang, Ge, Hongwei, Jiang, Dengkai, Li, Jiangdan, Chen, Xuefei, Han, Zhanwen
The hot subdwarf O/B stars (sdO/Bs) are known as extreme horizontal branch stars, which is of great importance in stellar evolution theory. The sdO/Bs are generally thought to have a helium-burning core and a thin hydrogen envelope $(M_{\rm env }<0.0
Externí odkaz:
http://arxiv.org/abs/2401.12429
Autor:
Lin, Jie, Wu, Chengyuan, Xiong, Heran, Wang, Xiaofeng, Nemeth, Peter, Han, Zhanwen, Li, Jiangdan, Elias-Rosa, Nancy, Salmaso, Irene, Filippenko, Alexei V., Brink, Thomas G., Yang, Yi, Chen, Xuefei, Yan, Shengyu, Zhang, Jujia, Guo, Sufen, Cai, Yongzhi, Mo, Jun, Xi, Gaobo, Liu, Jialian, Guo, Jincheng, Xia, Qiqi, Xiang, Danfeng, Li, Gaici, Li, Zhenwei, Zheng, WeiKang, Zhang, Jicheng, Liu, Qichun, Guo, Fangzhou, Chen, Liyang, Li, Wenxiong
Binary evolution theory predicts that the second common envelope (CE) ejection can produce low-mass (0.32-0.36 Msun) subdwarf B (sdB) stars inside ultrashort-orbital-period binary systems, as their helium cores are ignited under nondegenerate conditi
Externí odkaz:
http://arxiv.org/abs/2312.13612
Autor:
Ge, Hongwei, Tout, Christopher A, Webbink, Ronald F, Chen, Xuefei, Sarkar, Arnab, Li, Jiao, Li, Zhenwei, Zhang, Lifu, Han, Zhanwen
The common envelope evolution (CEE) is vital in forming short orbital period compact binaries. It covers many objects, such as double compact merging binaries, type Ia supernovae progenitors, binary pulsars, and X-ray binaries. Knowledge about the co
Externí odkaz:
http://arxiv.org/abs/2311.17304
Autor:
Yuan, Hailong, Li, Zhenwei, Bai, Zhongrui, Dong, Yiqiao, Cheng, Yao, Chen, Xuefei, Zhixiang, Zhang, Wang, Mengxin, Yang, Mingkuan, Huang, Xin, He, Yuji, Zhang, Liyun, Wang, Junfeng, Zhao, Yongheng, Chu, Yaoquan, Zhang, Haotong
Double white dwarf systems are of great astrophysical importance in the field of gravitational wave and Type Ia supernova. While the binary fraction of CO core white dwarf is about a few percents, the extremely low mass white dwarfs are all thought t
Externí odkaz:
http://arxiv.org/abs/2310.04108
Publikováno v:
A&A 669, A82 (2023)
Mass transfer stability is an essential issue in binary evolution. Ge et al. studied critical mass ratios for dynamically stable mass transfer by establishing adiabatic mass loss model and found that the donor stars on the giant branches tend to be m
Externí odkaz:
http://arxiv.org/abs/2211.01861