Zobrazeno 1 - 10
of 239
pro vyhledávání: '"Németh, Peter"'
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:
Amaral, Larissa Antunes, Munday, James, Vučković, Maja, Pelisoli, Ingrid, Németh, Péter, Zorotovic, Monica, Marsh, T. R., Littlefair, S. P., Dhillon, V. S., Brown, Alex J.
Approximately 150 low-mass white dwarfs, with masses below 0.4Msun, have been discovered. The majority of these low-mass WDs are observed in binary systems as they cannot be formed through single-star evolution within the Hubble time. In this study,
Externí odkaz:
http://arxiv.org/abs/2402.10159
Autor:
Uzundag, Murat, Krzesinski, Jurek, Pelisoli, Ingrid, Nemeth, Peter, Silvotti, Roberto, Dawson, Maja Vuckovic Harry, Geier, Stephan
Hot subdwarf B (sdB) stars are evolved, subluminous, helium-burning stars, most likely formed when red-giant stars lose their hydrogen envelope via interactions with close companions. They play an important role in our understanding of binary evoluti
Externí odkaz:
http://arxiv.org/abs/2401.17707
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:
Arias, Julieta P. Sánchez, Németh, Péter, de Almeida, Elisson S. G., Diaz, Matias A. Ruiz, Kraus, Michaela, Haucke, Maximiliano
We aim to combine asteroseismology, spectroscopy, and evolutionary models to establish a comprehensive picture of the evolution of Galactic blue supergiant stars (BSG). To start such an investigation, we selected three BSG candidates for our analysis
Externí odkaz:
http://arxiv.org/abs/2308.12745
Masses for 664 single-lined hot subdwarf stars identified in LAMOST were calculated by comparing synthetic fluxes from spectral energy distribution (SED) with observed fluxes from virtual observatory service. Three groups of hot subdwarf stars were s
Externí odkaz:
http://arxiv.org/abs/2306.15342
Publikováno v:
Galaxies, 2023, volume 11, issue 2, 55
The Kepler and TESS space missions significantly expanded our knowledge of what types of stars display flaring activity by recording a vast amount of super-flares from solar-like stars, as well as detecting flares from hotter stars of A-F spectral ty
Externí odkaz:
http://arxiv.org/abs/2304.14627
Autor:
Lin, Jie, Wang, Xiaofeng, Mo, Jun, Xi, Gaobo, Filippenko, Alexei V., Yan, Shengyu, Brink, Thomas G., Yang, Yi, Wu, Chengyuan, Németh, Péter, Li, Gaici, Guo, Fangzhou, Guo, Jincheng, Cai, Yongzhi, Xiong, Heran, Zheng, WeiKang, Liu, Qichun, Zhang, Jicheng, Jiang, Xiaojun, Chen, Liyang, Xia, Qiqi, Peng, Haowei, Chen, Zhihao, Li, Wenxiong, Lin, Weili, Xiang, Danfeng, Ma, Xiaoran, Liu, Jialian
Over the past few years, wide-field time-domain surveys like ZTF and OGLE have led to discoveries of various types of interesting short-period stellar variables, such as ultracompact eclipsing binary white dwarfs, rapidly rotating magnetised white dw
Externí odkaz:
http://arxiv.org/abs/2303.18050
Autor:
Sanjayan, Sachu, Baran, Andrzej S, Nemeth, Peter, Kinemuchi, Karen, Ostrowski, Jakub, Sahoo, Sumanta Kumar
Publikováno v:
2022AcA....72...77S
We present the list of variable stars we found in the Kepler superstamp data covering approximately 9 arcminutes from the central region of NGC 6791. We classified the variable stars based on the variability type and we established their cluster memb
Externí odkaz:
http://arxiv.org/abs/2303.07422
Autor:
Guzik, Joyce A., Baran, Andrzej S., Sanjayan, Sachu, Németh, Péter, Hedlund, Anne M., Jackiewicz, Jason, Dauelsberg, Lori R.
NGC 6819 is an open cluster of age 2.4 Gyr that was in the NASA Kepler spacecraft field of view from 2009 to 2013. The central part of the cluster was observed in a 200 x 200 pixel `superstamp' during these four years in 30-minute cadence photometry,
Externí odkaz:
http://arxiv.org/abs/2303.01581