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pro vyhledávání: '"Fang, Xiangsong"'
By using the LAMOST time-domain survey data, we study stellar activities based on the $\rm{H_{\alpha}}$ lines for about 2000 stars in four $K$2 plates. Two indices, $R_{\rm{H\alpha}}^{'}$ and $R_{\rm{H\alpha}}^{+}$, are computed from LAMOST spectra,
Externí odkaz:
http://arxiv.org/abs/2210.16830
Autor:
Liang, Xilong, Zhao, Jingkun, Chen, Yuqin, Fang, Xiangsong, Ye, Xianhao, Zhang, Jiajun, Kong, Xiaoming, Zhao, Gang
We present a new moving group clustered in kinematics, spatial position and elemental abundances. Its spatial position is around the center of the Local Arm of the Milky Way. A convergent point method was taken to select candidate member stars.\textb
Externí odkaz:
http://arxiv.org/abs/2003.05592
Autor:
Zhang, Jiajun, Zhao, Jingkun, Oswalt, Terry D., Fang, Xiangsong, Zhao, Gang, Liang, Xilong, Ye, Xianhao, Zhong, Jing
We identify member stars of more than 90 open clusters in the LAMOST survey. With the method of Fang et al.(2018), the chromospheric activity (CA) indices logR'CaK for 1091 member stars in 82 open clusters and logR'H{\alpha} for 1118 member stars in
Externí odkaz:
http://arxiv.org/abs/1909.13520
Autor:
Luo, ChangQing, Zhang, XiaoBin., Wang, Kun, Liu, Chao, Fang, Xiangsong, Zhang, Chunguang, Deng, Licai, Nie, Jundan, Fox-Machado, Lester, Luo, Yangping, Niu, Hubiao
We present long-term, multi-color photometric monitoring and spectroscopic observations of the short-period M-type eclipsing binary BX Tri. Six flare events were recorded in 4 years from 2014 to 2017. Three of them were detected on one night within a
Externí odkaz:
http://arxiv.org/abs/1901.06106
Publikováno v:
In New Astronomy April 2017 52:29-34
Akademický článek
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