13 papers
Investigation of projected rotational velocities of Be-type stars in LAMOST DR7
Zhicun Liu, Jiao Li, Jiaming Liu +3
Stellar rotation plays a key role in the transfer of angular momentum, and a large sample of Be-type stars with reliable projected rotational velocities is crucial for understandin…
The Origins of Neutron-capture Elements In Globular Cluster M22
Muhammad Zeshan Ashraf, Wenyuan Cui, Hongjie Li
The chemical abundances of metal-poor stars in globular clusters provide important constraints on their evolutionary scenarios. Using both main r-process and weak r-process pattern…
Identification of OB associations using the LAMOST-Gaia OB star sample
Zhicun Liu, Xiao-Long Wang, Wenyuan Cui +7
OB associations, as an intermediate stage between Galactic clusters and field stars, play an important role in understanding the star formation process, early stellar evolution, an…
Revisiting the Li abundances of Stars with and without Detected Planets from the High Resolution Spectroscopy
Jinxiao Qin, Hong-Liang Yan, Wenyuan Cui +12
Whether the presence of planets affects the lithium (Li) abundance of their host stars is still an open question. To investigate the difference of the Li abundance between planet-h…
The Mini-SiTian Array: A Pathfinder for the SiTian Project
Yang Huang, Jifeng Liu, Hong Wu +5
The Mini-SiTian Array serves as a pathfinder for the SiTian project, which aims to survey the entire sky in bands every 30 minutes, reaching a limiting magnitude of 21. This…
The Blue Horizontal-Branch Stars From the LAMOST Survey: Atmospheric Parameters
Jie Ju, Bo Zhang, Wenyuan Cui +4
Blue horizontal-branch (BHB) stars are crucial for studying the structure of the Galactic halo. Accurate atmospheric parameters of BHB stars are essential for investigating the for…
The Value-added Catalog of OB Stars in LAMOST DR7
Zhicun Liu, Wenyuan Cui, Jiajia Gu +4
In this work, we update the catalog of OB stars based on the Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) data release 7 and modified the OB stars selection c…
Chemical abundances of 20 barium stars from the OHP spectra
Guochao Yang, Jingkun Zhao, Yanchun Liang +7
Based on the high resolution and high signal-to-noise spectra, we derived the chemical abundances of 20 elements for 20 barium (Ba-) stars. For the first time, the detailed abundan…
Identification and distance measurement of dust clouds at high latitude by a clustering hierarchical algorithm
Mingxu Sun, Biwei Jiang, Helong Guo +1
We present a catalog of dust clouds at high Galactic latitude based on the Planck 857 GHz dust emission data. Using a clustering hierarchical algorithm, 315 dust cloud at high Gala…
Discovery of a new IW And-type dwarf nova with both tilted disk and tidal instability
Yongkang Sun, Xin Li, Qige Ao +6
IW And-type dwarf novae are anomalous Z Cam stars featured with outbursts happening during standstill states, which are not expected in the standard disk instability model. The phy…
Identification of Carbon Stars from LAMOST DR7
Linlin Li, Kecheng Zhang, Wenyuan Cui +6
Carbon stars are excellent kinematic tracers of galaxies and play important roles in understanding the evolution of the Galaxy. Therefore, it is worthwhile to search for them in a…
The measurement of masses of OB-type stars from LAMOST DR5
Zhenyan Huo, Zhicun Liu, Wenyuan Cui +5
The measurements of masses and luminosities of massive stars play an important role in understanding the formation and evolution of their host galaxies. In this work, we present th…
Identification of Blue Horizontal-Branch Stars From LAMOST DR5
Jie Ju, Wenyuan Cui, Zhenyan Huo +6
We construct a new catalog of the blue horizontal-branch (BHB) stars from the Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) DR5 dataset, which contains 5355+81…