Zobrazeno 1 - 10
of 11
pro vyhledávání: '"Chun-qian Li"'
Autor:
Xiao-Jin Xie, Jianrong Shi, Hong-Liang Yan, Tian-Yi Chen, Carlos Allende Prieto, Timothy C. Beers, Shuai Liu, Chun-Qian Li, Ming-Yi Ding, Yao-Jia Tang, Ruizhi Zhang, Renjing Xie
Publikováno v:
The Astrophysical Journal Letters, Vol 970, Iss 2, p L30 (2024)
Highly r -process-enhanced (RPE) stars are rare and usually metal poor ([Fe/H] < −1.0), and they mainly populate the Milky Way halo and dwarf galaxies. This study presents the discovery of a relatively bright ( V = 12.72), highly RPE ( r -II) star
Externí odkaz:
https://doaj.org/article/9142c84e25a9493dbcf3460632d832fe
Publikováno v:
The Astrophysical Journal Supplement Series, Vol 273, Iss 2, p 18 (2024)
The Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) has obtained more than 23 million spectra, opening an unprecedented opportunity to study stellar physics, as well as the formation and evolution of our Milky Way. In order to obta
Externí odkaz:
https://doaj.org/article/3d201a0e48914ee1874d974d90fdf2aa
Autor:
Jinghua Zhang, Maosheng Xiang, Jie Yu, Jian Ge, Ji-Wei Xie, Hui Zhang, Yaguang Li, You Wu, Chun-Qian Li, Shaolan Bi, Hong-Liang Yan, Jian-Rong Shi
Publikováno v:
The Astrophysical Journal Supplement Series, Vol 272, Iss 2, p 40 (2024)
Accurately characterizing the intrinsic stellar photometric noise induced by stellar astrophysics, such as stellar activity, granulation, and oscillations, is of crucial importance for detecting transiting exoplanets. In this study, we investigate th
Externí odkaz:
https://doaj.org/article/55b90e67d8ae4c0cae7179854b8c5bbd
Autor:
Ming-Yi Ding, Jian-Rong Shi, Hong-liang Yan, Chun-Qian Li, Qi Gao, Tian-Yi Chen, Jing-Hua Zhang, Shuai Liu, Xiao-Jin Xie, Yao-Jia Tang, Ze-Ming Zhou, Jiang-Tao Wang
Publikováno v:
The Astrophysical Journal Supplement Series, Vol 271, Iss 2, p 58 (2024)
Lithium is a fragile but crucial chemical element in the Universe, and exhibits interesting and complex behaviors. Thanks to the mass of spectroscopic data from the Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) medium-resolution
Externí odkaz:
https://doaj.org/article/30dd4730a5414a5fb1ddd4a225f146c5
Autor:
Tuan Yi, Wei-Min Gu, Zhi-Xiang Zhang, Ling-Lin Zheng, Mouyuan Sun, Junfeng Wang, Zhongrui Bai, Pei Wang, Jianfeng Wu, Yu Bai, Song Wang, Haotong Zhang, Yize Dong, Yong Shao, Xiang-Dong Li, Jia Zhang, Yang Huang, Fan Yang, Qingzheng Yu, Hui-Jun Mu, Jin-Bo Fu, Senyu Qi, Jing Guo, Xuan Fang, Chuanjie Zheng, Chun-Qian Li, Jian-Rong Shi, Huanyang Chen, Jifeng Liu
Optical time-domain surveys can unveil and characterize exciting but less-explored non-accreting and/or non-beaming neutron stars (NS) in binaries. Here we report the discovery of such a NS candidate using the LAMOST spectroscopic survey. The candida
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::77e8adb9248eeca209f7bc405323a3fd
http://arxiv.org/abs/2209.12141
http://arxiv.org/abs/2209.12141
Autor:
Ling-Lin Zheng, Wei-Min Gu, Mouyuan Sun, Zhi-Xiang Zhang, Tuan Yi, Jianfeng Wu, Junfeng Wang, Jin-Bo Fu, Sen-Yu Qi, Fan Yang, Song Wang, Liang Wang, Zhong-Rui Bai, Haotong Zhang, Chun-Qian Li, Jian-Rong Shi, Weikai Zong, Yu Bai, Jifeng Liu
We report a single-lined white dwarf-main sequence binary system, LAMOST J172900.17+652952.8, which is discovered by LAMOST's medium resolution time-domain surveys. The radial velocity semi-amplitude and orbital period of the optical visible star are
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8c7f8b6dce746572641cd477f32e8463
Based on high resolution, high signal-to-noise (S/N) ratio spectra from Keck/HIRES, we have determined abundances of 20 elements for 18 Ba candidates. The parameter space of these stars are in the range of 4880 $\leq$ $\rm{T_{eff}}$ $\leq$ 6050 K, 2.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e48d1f5ad6968dca8f8d0470ec390725
http://arxiv.org/abs/2108.08969
http://arxiv.org/abs/2108.08969
Publikováno v:
Research in Astronomy and Astrophysics. 22:075014
We present the results of photometric and spectroscopic analyses for the triple-lined system KIC 6525196, an eclipsing binary accompanied by a third star. By modeling the Kepler light curves and radial velocities from LAMOST and HIDES observations, a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::31a123e3d4a78c45340535e7ccf5c00f
https://doi.org/10.1088/1674-4527/ac712f
https://doi.org/10.1088/1674-4527/ac712f
Autor:
Xiao-Jin Xie, Jian-Rong Shi, Tian-Lu Chen, Hong-Liang Yan, Tian-Yi Chen, Kai-Ke Pan, Chun-Qian Li, Shuai Liu, Qi Gao, Tai-Sheng Yan, Ming-Yi Ding
Publikováno v:
Research in Astronomy and Astrophysics. 22:075005
We report the discovery of two r-process-enhanced stars with [Fe/H] > −0.6 dex selected from the Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) survey. Three candidate stars have been selected from the LAMOST medium-resolution (
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1057899aece18df57bc6e3caf21a0b4b
https://doi.org/10.1088/1674-4527/ac6f4d
https://doi.org/10.1088/1674-4527/ac6f4d
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