Zobrazeno 1 - 10
of 15 827
pro vyhledávání: '"Xiang Dong An"'
Publikováno v:
The Astrophysical Journal Supplement Series 2024
$\beta$ 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 w
Externí odkaz:
http://arxiv.org/abs/2412.03917
Publikováno v:
The Astrophysical Journal Supplement Series 2023
This paper reports the discovery of new slowly pulsating B-type stars. Based on the photometric, spectral, and astrometric data of TESS, LAMOST, and Gaia surveys, we have found 286 new slowly pulsating B-type stars (SPB stars) and 21 candidates. Amon
Externí odkaz:
http://arxiv.org/abs/2412.03855
Publikováno v:
The Astrophysical Journal Supplement Series 2023
The O- and B-type (OB-type) pulsating stars are important objects to study the structure and evolution of massive stars through asteroseismology. A large amount of data from various sky surveys provide an unprecedented opportunity to search for and s
Externí odkaz:
http://arxiv.org/abs/2412.03821
We present detailed evolutionary simulations of wide binary systems with high-mass ($8-20\,M_{\odot}$) donor stars and a $1.4\,M_{\odot}$ neutron star. Mass transfer in such binaries is dynamically unstable and common envelope (CE) evolution is follo
Externí odkaz:
http://arxiv.org/abs/2412.01776
Pulsating stars in eclipsing binaries are very important to understand stellar interior structures through astroseismology because their absolute parameters such as the masses and radii can be determined in high precision based on photometric and spe
Externí odkaz:
http://arxiv.org/abs/2411.18854
Autor:
Lin, Wen-Xu, Qian, Sheng-Bang, Zhu, Li-Ying, Liao, Wen-Ping, Li, Fu-Xing, Shi, Xiang-Dong, Li, Lin-Jia, Zhao, Er-Gang
Asteroseismology has emerged as a powerful tool to unravel the intricate relationships between evolved stars and their planetary systems. In this study, we leverage this technique to investigate the evolutionary stages of five exoplanet host stars, e
Externí odkaz:
http://arxiv.org/abs/2411.14703
Autor:
Deng, Zhu-Ling, Li, Xiang-Dong
While there are over a dozen known neutron star (NS) symbiotic X-ray binaries (SyXBs) in the Galaxy, none SyXBs containing a black hole (BH) have been detected. We address this problem by incorporating binary population synthesis and the accretion pr
Externí odkaz:
http://arxiv.org/abs/2411.07548
We introduce the Langevin deformation for the R\'enyi entropy on the $L^2$-Wasserstein space over $\mathbb{R}^n$ or a Riemannian manifold, which interpolates between the porous medium equation and the Benamou-Brenier geodesic flow on the $L^2$-Wasser
Externí odkaz:
http://arxiv.org/abs/2410.20369
The discrepancies between observations and theoretical predictions of cataclysmic variables (CVs) suggest that there exists unknown angular momentum loss mechanism(s) besides magnetic braking and gravitational radiation. Mass loss due to nova eruptio
Externí odkaz:
http://arxiv.org/abs/2410.15254
A function from $\Bbb F_{2^n}$ to $\Bbb F_{2^n}$ is said to be {\em $k$th order sum-free} if the sum of its values over each $k$-dimensional $\Bbb F_2$-affine subspace of $\Bbb F_{2^n}$ is nonzero. This notion was recently introduced by C. Carlet as,
Externí odkaz:
http://arxiv.org/abs/2410.10426