The evolution of hot Jupiters revealed by the age distribution of their host stars.

Autor: Di-Chang Chen, Ji-Wei Xie, Ji-Lin Zhou, Subo Dong, Jia-Yi Yang, Wei Zhu, Chao Liu, Yang Huang, Mao-Sheng Xiang, Hai-Feng Wang, Zheng Zheng, A-Li Luo, Jing-Hua Zhang, Zi Zhu

Publikováno v: Proceedings of the National Academy of Sciences of the United States of America; 11/7/2023, Vol. 120 Issue 45, p1-32, 39p

Planets Across Space and Time (PAST). II: Catalog and Analyses of the LAMOST-Gaia-Kepler Stellar Kinematic Properties

Autor: Weikai Zong, Jia-Yi Yang, H. F. Wang, Yang Huang, A-Li Luo, Mao-Sheng Xiang, Subo Dong, Zheng Zheng, Ji-Lin Zhou, Chao Liu, Jinghua Zhang, Ji-Wei Xie, Di-Chang Chen

Publikováno v: The Astronomical Journal
The Astronomical Journal, American Astronomical Society, 2021, 162 (3), pp.100. ⟨10.3847/1538-3881/ac0f08⟩

The Kepler telescope has discovered over 4,000 planets (candidates) by searching ? 200,000 stars over a wide range of distance (order of kpc) in our Galaxy. Characterizing the kinematic properties (e.g., Galactic component membership and kinematic ag

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3771fedcbdc49ea810f54abc8e988d9c
http://arxiv.org/abs/2107.10704

LAMOST Time-Domain Survey: First Results of four $K$2 plates

Autor: Song Wang, Hao-Tong Zhang, Zhong-Rui Bai, Hai-Long Yuan, Mao-Sheng Xiang, Bo Zhang, Wen Hou, Fang Zuo, Bing Du, Tan-Da Li, Fan Yang, Kai-Ming Cui, Yi-Lun Wang, Jiao Li, Mikhail Kovalev, Chun-Qian Li, Hao Tian, Wei-Kai Zong, Heng-Geng Han, Chao Liu, A-Li Luo, Jian-Rong Shi, Jian-Ning Fu, Shao-Lan Bi, Zhan-Wen Han, Ji-Feng Liu

Publikováno v: Wang, S, Zhang, H T, Bai, Z R, Yuan, H L, Xiang, M S, Zhang, B, Hou, W, Zuo, F, Du, B, Li, T D, Yang, F, Cui, K M, Wang, Y L, Li, J, Kovalev, M, Li, C Q, Tian, H, Zong, W K, Han, H G, Liu, C, Luo, A L, Shi, J R, Fu, J N, Bi, S L, Han, Z W & Liu, J F 2021, ' LAMOST Time-Domain survey : first results of four K2 plates ', Research in Astronomy and Astrophysics, vol. 21, no. 11, 292 . https://doi.org/10.1088/1674-4527/21/11/292

From Oct. 2019 to Apr. 2020, LAMOST performs a time-domain spectroscopic survey of four $K$2 plates with both low- and med-resolution observations. The low-resolution spectroscopic survey gains 282 exposures ($\approx$46.6 hours) over 25 nights, yiel

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f27eefb7f35dc19a030d7b01c56d0e23

Estimating stellar atmospheric parameters, absolute magnitudes and elemental abundances from the LAMOST spectra with Kernel-based principal component analysis

Autor: Wei Zhang, Zhi-Ying Huo, Jianrong Shi, Xiaowei Liu, Juanjuan Ren, Yang Huang, Yong-Heng Zhao, Yue-Fei Wang, Jiali Wang, Bingqiu Chen, A-Li Luo, Yong-Hui Hou, Chun Wang, Mao-Sheng Xiang, Yong Zhang, Hua-Wei Zhang, Jing Li, Jian Zhang, Haibo Yuan

Publikováno v: Monthly Notices of the Royal Astronomical Society. 464:3657-3678

Accurate determination of stellar atmospheric parameters and elemental abundances is crucial for Galactic archeology via large-scale spectroscopic surveys. In this paper, we estimate stellar atmospheric parameters -- effective temperature T_{\rm eff}

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c7fe42e43e97a176dff793f2579c1dd9
https://doi.org/10.1093/mnras/stw2523

The evolution of stellar metallicity gradients of the Milky Way disk from LSS-GAC main sequence turn-off stars: a two-phase disk formation history?

Autor: Xiaowei Liu, Mao-Sheng Xiang, Juanjuan Ren, Bingqiu Chen, Chun Wang, Zhi-Ying Huo, Yang Huang, Alberto Rebassa-Mansergas, Ning-Chen Sun, Haibo Yuan, Hua-Wei Zhang

Publikováno v: Research in Astronomy and Astrophysics. 15:1209-1239

Accurate measurements of stellar metallicity gradients in the radial and vertical directions of the disk and their temporal variations provide important constraints on the formation and evolution of the Milky Way disk. We use 297 042 main sequence tu

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8606ab85d3a8e7e44a7999d7c2d2348e
https://doi.org/10.1088/1674-4527/15/8/009