Zobrazeno 1 - 10
of 285
pro vyhledávání: '"Sheng-Bang Qian"'
Publikováno v:
The Astrophysical Journal Letters, Vol 971, Iss 2, p L50 (2024)
Determining the evolutionary stage of stars is crucial for understanding the evolution of exoplanetary systems. In this context, red giant branch (RGB) and red clump (RC) stars, which formed at stages in the later evolution of stars situated before a
Externí odkaz:
https://doaj.org/article/1d5f49639c144bc39f37f9476dcf2412
Autor:
Fu-Xing Li, Sheng-Bang Qian, Li-ying Zhu, Wen-Ping Liao, Er-gang Zhao, Min-Yu Li, Qi-Bin Sun, Lin-Feng Chang, Wen-Xu Lin
Publikováno v:
The Astrophysical Journal, Vol 976, Iss 2, p 158 (2024)
The massive semidetached binary with a long-term decreasing orbital period may involve a rapid mass-transfer phase in Case A, and thus, they are good astrophysical laboratories for investigating the evolution of massive binary stars. In this work, by
Externí odkaz:
https://doaj.org/article/54119f780f784c31bb4b74f37d0207fe
Publikováno v:
The Astrophysical Journal, Vol 976, Iss 1, p 107 (2024)
The IW And-type phenomenon in cataclysmic variables presents a significant challenge to the accretion disk instability model. Using photometric data from the All-Sky Automated Survey for Supernovae, the Zwicky Transient Facility, and the Transiting E
Externí odkaz:
https://doaj.org/article/596dd5c6783a44e3801ef2009afe9e8b
Publikováno v:
The Astrophysical Journal, Vol 975, Iss 2, p 249 (2024)
Eclipsing Algol-type systems containing a δ Scuti (hereafter δ Sct) star enable precise determination of physical parameters and the investigation of stellar internal structure and evolution. We present the absolute parameters of CZ Aquarius (herea
Externí odkaz:
https://doaj.org/article/124c3d3edae04518a41dad566cb9eef6
Autor:
Min-Yu Li, Sheng-Bang Qian, Ai-Ying Zhou, Li-Ying Zhu, Wen-Ping Liao, Er-Gang Zhao, Xiang-Dong Shi, Fu-Xing Li, Qi-Bin Sun
Publikováno v:
The Astrophysical Journal, Vol 974, Iss 2, p 278 (2024)
Heartbeat stars (HBSs) with tidally excited oscillations (TEOs) are ideal astrophysical laboratories for studying the internal properties of the systems. In this paper, five new HBSs exhibiting TEOs are discovered using TESS photometric data. The orb
Externí odkaz:
https://doaj.org/article/de5c8261c3f34223b93d2cd43a2c93ba
Publikováno v:
The Astrophysical Journal, Vol 974, Iss 1, p 132 (2024)
Tilted disk precession exists in different objects. Negative superhumps (NSHs) in cataclysmic variable stars are believed to arise from the interaction between the reverse precession of a tilted disk and the streams from the secondary star. Utilizing
Externí odkaz:
https://doaj.org/article/040d5bb943854e40beb46238abce0734
Publikováno v:
The Astrophysical Journal, Vol 974, Iss 1, p 130 (2024)
We present a photometric study of EX Dra, a dwarf nova that has been extensively observed by the Transiting Exoplanet Survey Satellite. The data reveal the occurrence of 20 complete outbursts, exhibiting several intriguing and rare characteristics. T
Externí odkaz:
https://doaj.org/article/c68e1b724b4d4de9ab21df17a3670c68
Publikováno v:
The Astronomical Journal, Vol 168, Iss 1, p 27 (2024)
Asteroseismology offers a profound window into stellar interiors and has emerged as a pivotal technique in exoplanetary research. This study harnesses the Transiting Exoplanet Survey Satellite observations to reveal, for the first time, the asterosei
Externí odkaz:
https://doaj.org/article/aa0a4b26059a40898f31865f5c15a78c
Autor:
Qi-Bin Sun, Sheng-Bang Qian, Li-Ying Zhu, Wen-Ping Liao, Er-Gang Zhao, Fu-Xing Li, Xiang-Dong Shi, Min-Yu Li
Publikováno v:
The Astrophysical Journal, Vol 966, Iss 1, p 83 (2024)
TV Col is a long-period eclipsing intermediate polar (IP) prototype star for the negative superhump (NSH) system. We investigate the eclipse minima, eclipse depth, and NSH amplitude based on TESS photometry. Using the same analytical method as for SD
Externí odkaz:
https://doaj.org/article/d7f0538c7065424daf47ad5952b20c29
Publikováno v:
The Astrophysical Journal Supplement Series, Vol 271, Iss 1, p 28 (2024)
β Cephei pulsating variable (BCEP) stars are the most massive pulsating variable stars in the main sequence, exhibiting both p - and g -mode pulsations. In this study, we identified 155 BCEP stars or candidates using data from TESS and Gaia, of whic
Externí odkaz:
https://doaj.org/article/30c336cdebdd4e2f94e6cf47e73bbe2e