105 citations · 465 across the 15 of their papers we have counts for
15 papers
The Kinematic and Chemical Properties of the Close-in Planet Host Star 8 UMi
Huiling Chen, Yang Huang, Wei Zhu +11
A recent study by Hon et al. reported that a close-in planet around the red clump star, 8 UMi, should have been engulfed during the expansion phase of its parent star's evolution.…
Precise Masses, Ages of ~1.0 million RGB and RC stars observed by the LAMOST
Chun Wang, Yang Huang, Yutao Zhou +1
We construct a catalogue of stellar masses and ages for 696,680 red giant branch (RGB) stars, 180,436 primary red clump (RC) stars, and 120,907 secondary RC stars selected from the…
The Study of Circumgalactic Medium with Quasar Pairs
Zhi-Fu Chen, Huan-Chang Qin, Jin-Ting Cai +4
We have collected 10025 foreground-background quasar pairs with projected distances kpc from the large quasar catalog of the SDSS DR16Q. We investigate the properties of…
Li-rich Giants in LAMOST Survey. III. The statistical analysis of Li-rich giants
Yutao Zhou, Chun Wang, Hongliang Yan +5
The puzzle of Li-rich giant is still unsolved, contradicting the prediction of the standard stellar models. Although the exact evolutionary stages play a key role in the knowledge…
The Spectroscopic Binaries from LAMOST Medium-Resolution Survey (MRS). I. Searching for Double-lined Spectroscopic Binaries (SB2s) with Convolutional Neural Network
Bo Zhang, Ying-Jie Jing, Fan Yang +13
We developed a convolutional neural network (CNN) model to distinguish the double-lined spectroscopic binaries (SB2s) from others based on single exposure medium-resolution spectra…
Self-consistent Stellar Radial Velocities from LAMOST Medium-Resolution Survey (MRS) DR7
Bo Zhang, Jiao Li, Fan Yang +12
Radial velocity (RV) is among the most fundamental physical quantities obtainable from stellar spectra and is rather important in the analysis of time-domain phenomena. The LAMOST…
LAMOST/HRS Spectroscopic Analysis of Two New Li-rich Giants
Zeming Zhou, Jianrong Shi, Hongliang Yan +9
Two Li-rich candidates, TYC 1338-1410-1 and TYC 2825-596-1, were observed with the new high-resolution echelle spectrograph, LAMOST/HRS. Based on the high-resolution and high-signa…
Most Lithium-rich Low-mass Evolved Stars Revealed as Red Clump stars by Asteroseismology and Spectroscopy
Hong-Liang Yan, Yu-Tao Zhou, Xianfei Zhang +19
Lithium has confused scientists for decades at almost each scale of the universe. Lithium-rich giants are peculiar stars with lithium abundances over model prediction. A large frac…
KIC 12268220: A Scuti Pulsating Star and an Active Protohelium White Dwarf in an Eclipsing Binary System
Kaiming Cui, Zhao Guo, Qing Gao +4
We present a photometric, spectroscopic, asteroseismic, and evolutionary analysis of the Algol-type eclipsing binary KIC 12268220. We find the O'Connell effect and anticorrelated e…
Lithium-rich Giants in LAMOST Survey. I. The Catalog
Qi Gao, Jian-Rong Shi, Hong-Liang Yan +5
Standard stellar evolution model predicts a severe depletion of lithium (Li) abundance during the first dredge up process (FDU). Yet a small fraction of giant stars are still found…
Correlation between the ionizing continuum and variable C iv broad absorption line in multi-epoch observations of SDSS J141007.74+541203.3
Hong-Yan Huang, Cai-Juan Pan, Wei-Jian Lu +9
Correlation between the variations of quasar absorption lines and the ionizing continuum have been recently confirmed in systematic studies. However, no convincing individual case…
High-resolution spectroscopic analysis of a large sample of Li-rich giants found by LAMOST
Yutao Zhou, Hongliang Yan, Jianrong Shi +6
The discovery of Li-rich giant has cast a new challenge for the standard stellar evolution models, and to resolve this issue, the number of this type object has been rapidly increa…
The nature of the Li enrichment in the most Li-rich giant star
Hong-Liang Yan, Jian-Rong Shi, Yu-Tao Zhou +13
About one percent of giants\upcite{Brown1989} are detected to have anomalously high lithium (Li) abundances in their atmospheres, conflicting directly with the prediction of the st…
Asteroseismology of the Double-Mode High-Amplitude Scuti Star VX Hydrae
Hui-Fang Xue, Jian-Ning Fu, L. Fox-Machado +11
Bi-site time-series photometric and high-resolution spectroscopic observations were made for the double-mode high-amplitude Scuti star VX\ Hya. The fundamental frequency $f_{0}…
Rapidly variable Fe K line in NGC 4051
J. X. Wang, Y. Y. Zhou, H. G. Xu +1
We present a detailed analysis on the variability of the Fe K emission line in NGC 4051 using ASCA data. Through simple Gaussian line fits, we find not only obvious Fe K line varia…