431 citations · 1.8k across the 33 of their papers we have counts for
17 papers · 1 filter
GD-1: the relic of an old metal-poor globular cluster
Guang-Wei Li, Brian Yanny, Yue Wu
Combining data from Gaia DR2, SDSS DR14 and LAMOST DR6, we update the fit to model of the properties of the stellar stream GD-1 and find that it has an age of Gyr, [Fe/H]…
Time stamps of vertical phase mixing in the Galactic disk from LAMOST-Gaia stars
Hai-Jun Tian, Chao Liu, Yue Wu +2
The perturbation mechanism of the Galactic disk has puzzled us for a long time. The imprints from perturbations provide important diagnostics on the disk formation and evolution. H…
The Large Sky Area Multi-Object Fibre Spectroscopic Telescope (LAMOST) Quasar Survey: Quasar Properties from Data Release Two and Three
X. Y. Dong, Xue-Bing Wu, Y. L. Ai +19
This is the second installment for the Large Sky Area Multi-Object Fibre Spectroscopic Telescope (LAMOST) Quasar Survey, which includes quasars observed from September 2013 to June…
Red Clump stars from LAMOST II: the outer disc of the Milky Way
Jun-chen Wan, Chao Liu, Li-cai Deng +1
We present stellar density maps of the Galactic outer disc with red clump stars from the LAMOST data. These samples are separated into younger (mean age ~ 2.7 Gyr) and older (mean…
Candidate members of the Pal 5, GD-1, Cetus Polar, and Orphan tidal stellar halo streams from Sdss DR9, Lamost DR3 and APOGEE catalogues
Guang-Wei Li, Brian Yanny, Hao-Tong Zhang +8
We present candidate members of the Pal 5, GD-1, Cetus Polar, and Orphan tidal stellar streams found in LAMOST DR3, SDSS DR9 and APOGEE catalogs. In LAMOST DR3, we find 20, 4, 24 h…
LAMOST Spectroscopic Survey of the Galactic Anticentre (LSS-GAC): the second release of value-added catalogues
Maosheng Xiang, Xiaowei Liu, Haibo Yuan +29
We present the second release of value-added catalogues of the LAMOST Spectroscopic Survey of the Galactic Anticentre (LSS-GAC DR2). The catalogues present values of radial velocit…
The peculiar velocities in the Galactic outer disk--hints of the elliptical disk and the perturbation of the spiral structures
Hai-Jun Tian, Chao Liu, Jun-Chen Wan +7
We present the peculiar in-plane velocities derived from the LAMOST red clump stars. From the variations of the in-plane velocity with the Galactocentric radius for the young and o…
Determining the local dark matter density with LAMOST data
Qiran Xia, Chao Liu, Shude Mao +7
Measurement of the local dark matter density plays an important role in both Galactic dynamics and dark matter direct detection experiments. However, the estimated values from prev…
The K giant stars from the LAMOST survey data II: the Hercules stream in radial migration
Chao Liu, Xiao-Yan Chen, Jun Yin +11
We estimate the age for the individual stars located at the lower part of the red giant branch from the LAMOST DR2 K giant sample. Taking into account the selection effects and the…
The stellar kinematics in the solar neighborhood from LAMOST data
Hai-Jun Tian, Chao Liu, Jeffrey L. Carlin +6
We use about 200,000 FGK type main-sequence stars from the LAMOST DR1 data to map the local stellar kinematics. With the velocity de-projection technique, we are able to derive the…
19 low mass hyper-velocity star candidates from the first data release of LAMOST survey
Yin-bi Li, A-Li Luo, Gang Zhao +12
Hyper-velocity stars are believed to be ejected out from the Galactic center through dynamical interactions between (binary) stars and the central massive black hole(s). In this pa…
The first symbiotic stars from the LAMOST survey
Jiao Li, Joanna Mikołajewska, Xue-Fei Chen +8
Symbiotic stars are interacting binary systems with the longest orbital periods. They are typically formed by a white dwarf, a red giant and a nebula. These objects are natural ast…
Red Clump Stars from the LAMOST data I: identification and distance
Junchen Wan, Chao Liu, Licai Deng +5
We present a sample of about 120,000 red clump candidates selected from the LAMOST DR2 catalog based on the empirical distribution model in the effective temperature vs. surface gr…
Estimation of distances to stars with stellar parameters from LAMOST
Jeffrey L. Carlin, Chao Liu, Heidi Jo Newberg +15
We present a method to estimate distances to stars with spectroscopically derived stellar parameters. The technique is a Bayesian approach with likelihood estimated via comparison…
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 LAMOST Survey of Background Quasars in the Vicinity of the Andromeda and Triangulum Galaxies -- II. Results from the Commissioning Observations and the Pilot Surveys
Zhi-Ying Huo, Xiao-Wei Liu, Mao-Sheng Xiang +68
We present new quasars discovered in the vicinity of the Andromeda and Triangulum galaxies with the LAMOST during the 2010 and 2011 observational seasons. Quasar candidates are sel…
A resonant feature near the Perseus arm revealed by red clump stars
Chao Liu, Xiangxiang Xue, Min Fang +4
We investigate the extinction together with the radial velocity dispersion and distribution of red clump stars in the anti-center direction using spectra obtained with Hectospec on…