303 citations · 1.2k across the 30 of their papers we have counts for
30 papers
Correlation between the two-armed spiral in the -- plane and moving groups
Yan Xu, Chao Liu, Chengdong Li +5
We use a cross-matched sample of 3.7 million stars from Gaia DR3 and LAMOST DR7 to investigate the velocity substructures in the Milky Way disk. The median radial velocity as…
Detailed Mapping of the Galactic Disk Structure in the Solar Neighborhood through LAMOST K Dwarfs
Xi-Can Tang, Hao Tian, Jing Li +4
The Galactic disk is one of the main components of the Milky Way, which contributes most of the luminosity. Its structure is essential for understanding the formation and evolution…
On the identification of N-rich metal-poor field stars with future China space station telescope
Jiajun Zhang, Baitian Tang, Jiang Chang +6
During the long term evolution of globular clusters (GCs), a part of member stars are lost to the field. The recently found nitrogen-rich (N-rich) metal-poor field stars are promis…
Exploring asymmetric substructures of the outer disk based on the conjugate angle of the radial action
Y. Xu, C. Liu, Z. Li +5
We use the conjugate angle of radial action (), the best representation of the orbital phase, to explore the "mid-plane, north branch, south branch" and "Monoceros area" disk…
The first comprehensive Milky Way stellar mock catalogue for the Chinese Space Station Telescope Survey Camera
Yang Chen, Xiaoting Fu, Chao Liu +9
The Chinese Space Station Telescope (CSST) is a cutting-edge two-meter astronomical space telescope currently under construction. Its primary Survey Camera (SC) is designed to cond…
Evolved Massive Stars at Low-metallicity V. Mass-Loss Rate of Red Supergiant Stars in the Small Magellanic Cloud
Ming Yang, Alceste Z. Bonanos, Biwei Jiang +17
We assemble the most complete and clean red supergiant (RSG) sample (2,121 targets) so far in the Small Magellanic Cloud (SMC) with 53 different bands of data to study the MLR of R…
Atmospheric parameters and kinematic information for the M giants stars from LAMOST DR9
Dan Qiu, Hao Tian, Jing Li +5
A catalog of more than 43,000 M giant stars has been selected by Li et al. from the ninth data release of LAMOST. Using the data-driven method SLAM, we obtain the stellar parameter…
Stellar Initial Mass Function Varies with Metallicities and Time
Jiadong Li, Chao Liu, Zhi-Yu Zhang +4
Most structural and evolutionary properties of galaxies strongly rely on the stellar initial mass function (IMF), namely the distribution of the stellar mass formed in each episode…
LAMOST medium-resolution spectroscopic survey of binarity and exotic star (LAMOST-MRS-B): Observation strategy and target selection
Jiao Li, Jiang-Dan Li, Yan-Jun Guo +15
LAMOST-MRS-B is one of the sub-surveys of LAMOST medium-resolution (R~7500) spectroscopic survey. It aims at studying the statistical properties (e.g., binary fraction, orbital per…
Is the core-cusp problem a matter of perspective: Jeans Anisotropic Modeling against numerical simulations
Wenting Wang, Ling Zhu, Zhaozhou Li +14
Mock member stars for 28 dwarf galaxies are constructed from the cosmological Auriga simulation, which reflect the dynamical status of realistic stellar tracers. The axis-symmetric…
Searching Extra-tidal Features around the Globular Cluster Whiting 1
Jundan Nie, Hao Tian, Jing Li +14
Whiting 1 is a faint and young globular cluster in the halo of the Milky Way, and was suggested to have originated in the Sagittarius spherical dwarf galaxy (Sgr dSph). In this pap…
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…
Search for the metal-weak thick disk from the LAMOST DR5
T. -S. Yan, J. -R. Shi, H. Tian +2
Based on the data release of the Large Sky Area Multi-Object Fiber Spectroscopic Telescope survey (LAMOST DR5) and the \emph{Gaia} Early Data Release 3 (\emph{Gaia} EDR3), we const…
LAMOST Time-Domain Survey: First Results of four 2 plates
Song Wang, Haotong Zhang, Zhongrui Bai +23
From Oct. 2019 to Apr. 2020, LAMOST performs a time-domain spectroscopic survey of four 2 plates with both low- and med-resolution observations. The low-resolution spectroscopic…
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…
The old moving groups in the field of Taurus
Jiaming Liu, Min Fang, Hao Tian +3
In this work, we present a systematic search for stellar groups in the Taurus field by applying DBSCAN algorithm to the data from Gaia DR2. We find 22 groups, consisting of 8 young…
The Flare and Warp of the Young Stellar Disk traced with LAMOST DR5 OB-type stars
Yang Yu, Hai-Feng Wang, Wen-Yuan Cui +9
We present analysis of the spatial density structure for the outer disk from 814 \,kpc with the LAMOST DR5 13534 OB-type stars and observe similar flaring on north and south sid…
Stellar parametrization of LAMOST M dwarf stars
Jiadong Li, Chao Liu, Bo Zhang +3
M dwarf stars are the most common stars in the Galaxy, dominating the population of the Galaxy by numbers at faint magnitudes. Precise and accurate stellar parameters for M dwarfs…
Exploring the Galactic Anticenter substructure with LAMOST & Gaia DR2
Jing Li, Xiang-Xiang Xue, Chao Liu +12
We characterize the kinematic and chemical properties of 589 Galactic Anticenter Substructure Stars (GASS) with K-/M- giants in Integrals-of-Motion space. These stars likely includ…
Phase II of the LAMOST-Kepler/K2 survey. I. Time series of medium-resolution spectroscopic observations
Weikai Zong, Jian-Ning Fu, Peter De Cat +20
Phase \RNum{2} of the LAMOST-{\sl Kepler/K}2 survey (LK-MRS), initiated in 2018, aims at collecting medium-resolution spectra (; hereafter MRS) for more than s…
On the radial velocity calibrations in the LAMOST Medium-Resolution Spectroscopic Survey of Nebulae
Juan-Juan Ren, Hong Wu, Chao-Jian Wu +12
Accurate radial velocity determinations of optical emission lines (i.e. [NII]6548,6584, H, and [SII]6717,6731) are very important for investigating the kinematics and dy…
Differential rotation of the halo traced by the K-giant stars
Hao Tian, Chao Liu, Yougang Wang +4
We use K-giant stars selected from the LAMOST DR5 to study the variation of the rotational velocity of the galactic halo at different space positions. Modelling the rotational velo…
The Zwicky Transient Facility Catalog of Periodic Variable Stars
Xiaodian Chen, Shu Wang, Licai Deng +3
The number of known periodic variables has grown rapidly in recent years. Thanks to its large field of view and faint limiting magnitude, the Zwicky Transient Facility (ZTF) offers…
Tracing Kinematic and Chemical Properties of Sagittarius Stream by K-Giants, M-Giants, and BHB stars
Chengqun Yang, Xiang-Xiang Xue, Jing Li +12
We characterize the kinematic and chemical properties of 3,000 Sagittarius (Sgr) stream stars, including K-giants, M-giants, and BHBs, select from SEGUE-2, LAMOST, and SDSS s…