Zobrazeno 1 - 10
of 18
pro vyhledávání: '"Jiangdan Li"'
Autor:
Zhenwei Li, Yangyang Zhang, Hailiang Chen, Hongwei Ge, Dengkai Jiang, Jiangdan Li, Xuefei Chen, Zhanwen Han
Publikováno v:
The Astrophysical Journal, Vol 964, Iss 1, p 22 (2024)
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 _env < 0.02 M
Externí odkaz:
https://doaj.org/article/bd8d833b21a94b58b816069331824033
Autor:
Qiyuan Cheng, Jianping Xiong, Xu Ding, Kaifan Ji, Jiao Li, Chao Liu, Jiangdan Li, Jingxiao Luo, Xin Lyu, Zhanwen Han, Xuefei Chen
Publikováno v:
The Astronomical Journal, Vol 167, Iss 4, p 148 (2024)
Low-mass-ratio ( q ) contact binary systems are progenitors of stellar mergers such as blue stragglers or fast-rotating FK Com stars. In this study, we present the first light curve analysis of two newly identified low mass-ratio contact binary syste
Externí odkaz:
https://doaj.org/article/381ef076657c4a78ab2ab96fa74917cf
Publikováno v:
The Astrophysical Journal, Vol 958, Iss 1, p 14 (2023)
Hierarchical triple-star systems consists of three components organized into an inner binary ( M _1 , M _2 ) and a more distant outer tertiary ( M _3 ) star. The LAMOST Medium-Resolution Spectroscopic Survey has offered a great sample for the study o
Externí odkaz:
https://doaj.org/article/956750e455d44056a96b7e63fa1c2511
Autor:
Jiangdan Li, Christopher A Onken, Christian Wolf, Péter Németh, Mike Bessell, Zhenwei Li, Xiaobin Zhang, Jiao Li, Luqian Wang, Lifang Li, Yangping Luo, Hailiang Chen, Kaifan Ji, Xuefei Chen, Zhanwen Han
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 515:3370-3382
Binaries consisting of a hot subdwarf star and an accreting white dwarf (WD) are sources of gravitational wave radiation at low frequencies and possible progenitors of type Ia supernovae if the WD mass is large enough. Here, we report the discovery o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::15963dc8d6d7ec7813b2a49143d4d44a
https://doi.org/10.1093/mnras/stac1768
https://doi.org/10.1093/mnras/stac1768
Autor:
Jiangdan Li, Jiao Li, Chao Liu, Chunqian Li, Yanjun Guo, Luqian Wang, Xuefei Chen, Lifeng Xing, Yonghui Hou, Zhanwen Han
Binary evolution leads to the formation of important objects crucial to the development of astrophysics, but the statistical properties of binary populations are still poorly understood. The LAMOST-MRS has provided a large sample of stars to study th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::73d0de319ee3afa686e46eb61b154a6d
http://arxiv.org/abs/2205.11734
http://arxiv.org/abs/2205.11734
We present a study of the spectroscopic binary TYC 2990-127-1 from the LAMOST survey. We use full-spectrum fitting to derive radial velocities and spectral parameters. The high mass ratio indicates that the system underwent mass transfer in the past.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6237f8ceffd7cccc101e23dbe8b8ed9b
http://arxiv.org/abs/2204.10680
http://arxiv.org/abs/2204.10680
Autor:
Yanjun Guo (郭彦君), Bo Zhang, Chao Liu, Jiao Li, Jiangdan Li, Luqian Wang, Zhicun Liu, Yong-Hui Hou, Zhanwen Han, Xuefei Chen
Massive stars play key roles in many astrophysical processes. Deriving the atmospheric parameters of massive stars is important to understanding their physical properties, and thus the atmospheric parameters are key inputs to trace the evolution of m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8b2e158ee4f6e192c0448195e3b1cb3f
http://arxiv.org/abs/2110.06246
http://arxiv.org/abs/2110.06246
Autor:
Luqian Wang, He-ran Xiong, Jian-Ping Xiong, Xuefei Chen, Yong-Hui Hou, Zhanwen Han, Chao Liu, Feng Luo, Yanjun Guo, Jiangdan Li, Jiao Li
Massive binaries play significant roles in many fields. Identifying massive stars, particularly massive binaries, is of great importance. In this paper, by adopting the technique of measuring the equivalent widths of several spectral lines, we identi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d9b6c665020f49c3e8c2decd47e94611
Autor:
Jiangdan Li
Publikováno v:
Journal of Physics A: Mathematical and Theoretical. 54:155002
This paper proposes escape exponent to characterize localization or escape of moving particles, which will determine the diffusion process. So the diffusion process can also be described by the evolution of the distribution density of escape exponent
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c67fb652980d05752be494e62686ea79
https://doi.org/10.1088/1751-8121/abe887
https://doi.org/10.1088/1751-8121/abe887
Autor:
Jiangdan Li, Suying Zhang
Publikováno v:
Physics Letters A. 375:1710-1715
We prove that the 2D Hamiltonian system is unstable if its potential satisfies ∂2V∂r2>0 and some segments of equal-potential curves concave toward the origin in the physically accessible region for a given E. And we present a new indicator of cha
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::905f9ab048193979d487e70a732b456b
https://doi.org/10.1016/j.physleta.2011.03.024
https://doi.org/10.1016/j.physleta.2011.03.024