553 citations · 5.8k across the 128 of their papers we have counts for
8 papers · 1 filter
The velocity distribution in the solar neighbourhood from the LAMOST pilot survey
Qiran Xia, Chao Liu, Yan Xu +5
We use about 15,000 F/G nearby dwarf stars selected from the LAMOST pilot survey to map the U-V velocity distribution in the solar neighbourhood. An extreme deconvolution algorithm…
Asteroseismic based estimation of the surface gravity for the LAMOST giant stars
Chao Liu, Min Fang, Yue Wu +7
Asteroseismology is one of the most accurate approaches to estimate the surface gravity of a star. However, most of the data from the current spectroscopic surveys do not have aste…
Fixing the Reference Frame for PPMXL Proper Motions Using Extragalactic Sources
Kathleen Grabowski, Jeffrey L. Carlin, Heidi Jo Newberg +14
We quantify and correct systematic errors in PPMXL proper motions using extragalactic sources from the first two LAMOST data releases and the Veron-Cetty & Veron Catalog of Quasars…
A Bayesian Method for the Extinction
Hai-Jun Tian, Chao Liu, Jing-Yao Hu +2
We propose a Bayesian method to measure the total Galactic extinction parameters, and . Validation tests based on the simulated data indicate that the method can achieve…
The binarity of Milky Way F,G,K stars as a function of effective temperature and metallicity
Shuang Gao, Chao Liu, Xiaobin Zhang +3
We estimate the fraction of F,G,K stars with close binary companions by analysing multi-epoch stellar spectra from SDSS and LAMOST for radial velocity (RV) variations. We employ a…
The Nearest High-Velocity Stars Revealed by LAMOST Data Release 1
Jing Zhong, Li Chen, Chao Liu +14
We report the discovery of 28 candidate high-velocity stars (HVSs) at heliocentric distances of less than 3 kpc, based on the Large Sky Area Multi-Object Fiber Spectroscopic Telesc…
The K giant stars from the LAMOST survey data I: identification, metallicity, and distance
Chao Liu, Li-Cai Deng, Jeffrey L. Carlin +10
We present a support vector machine classifier to identify the K giant stars from the LAMOST survey directly using their spectral line features. The completeness of the identificat…
The First Hypervelocity Star from the LAMOST Survey
Zheng Zheng, Jeffrey L. Carlin, Timothy C. Beers +10
We report the first hypervelocity star (HVS) discovered from the LAMOST spectroscopic survey. It is a B-type star with a heliocentric radial velocity about 620 km/s, which projects…