260 citations · 3.1k across the 84 of their papers we have counts for
85 papers
Discovery of the shell structure via break radii in the outer halo of the Milky Way
Dashuang Ye, Cuihua Du, Jianrong Shi +1
Based on the \textit{Gaia} DR3 RR Lyrae catalog, we use two methods to fit the density profiles with an improved broken power law, and find that there are two break radii coincidin…
Value-added catalog of M-giant stars in LAMOST DR9
Jing Li, Lin Long, Jing Zhong +9
In this work, we update the catalog of M-giant stars from the low-resolution spectra of the Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) Data Release 9. There…
Minute-cadence Observations of the LAMOST Fields with the TMTS: III. Statistic Study of the Flare Stars from the First Two Years
Qichun Liu, Jie Lin, Xiaofeng Wang +22
Tsinghua University-Ma Huateng Telescopes for Survey (TMTS) aims to detect fast-evolving transients in the Universe, which has led to the discovery of thousands of short-period var…
An X-Ray-dim "Isolated'' Neutron Star in a Binary?
Jie Lin, Chunqian Li, Weiyang Wang +13
We report the discovery of a dark companion to 2MASS J15274848+3536572 with an orbital period of 6.14 hr. Combining the radial velocity from LAMOST observations and modelling of th…
60 candidate high-velocity stars originating from the Sagittarius dwarf spheroidal galaxy in Gaia EDR3
Hefan Li, Cuihua Du, Jun Ma +3
Using proper motions from Gaia Early Data Release 3 (Gaia EDR 3) and radial velocities from several surveys, we identify 60 candidate high-velocity stars with total velocity greate…
Four-hundred Very Metal-Poor Stars Studied with LAMOST and Subaru. II. Elemental abundances
Haining Li, Wako Aoki, Tadafumi Matsuno +9
We present homogeneous abundance analysis of over 20 elements for 385 very metal-poor (VMP) stars based on the LAMOST survey and follow-up observations with the Subaru Telescope. I…
Four-hundred Very Metal-poor Stars studied with LAMOST and Subaru. I. Survey Design, Follow-up Program, and Binary Frequency
Wako Aoki, Haining Li, Tadafumi Matsuno +11
The chemical abundances of very metal-poor stars provide important constraints on the nucleosynthesis of the first generation of stars and early chemical evolution of the Galaxy. W…
Broadening and redward asymmetry of H line profiles observed by LAMOST during a stellar flare on an M-type star
Yuchuan Wu, Hechao Chen, Hui Tian +6
Stellar flares are characterized by sudden enhancement of electromagnetic radiation in stellar atmospheres. So far much of our understanding of stellar flares comes from photometri…
A catalogue of 323 cataclysmic variables from LAMOST DR6
Yongkang Sun, Zhenghao Cheng, Shuo Ye +17
In this work, we present a catalog of cataclysmic variables (CVs) identified from the Sixth Data Release (DR6) of the Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAM…
The Milky Way Revealed by Variable Stars I: Sample Selection of RR Lyrae stars, and Evidence for the Merger History
I. Ablimit, G. Zhao, U. Teklimakan +2
In order to study the Milky Way, RR Lyrae (RRL) variable stars identified by Gaia, ASAS-SN and ZTF sky survey projects have been analyzed as tracers in this work. Photometric and s…
Minute-cadence Observations of the LAMOST Fields with the TMTS: I. Methodology of Detecting Short-period Variables and Results from the first-year Survey
Jie Lin, Xiaofeng Wang, Jun Mo +18
Tsinghua University-Ma Huateng Telescopes for Survey (TMTS), located at Xinglong Station of NAOC, has a field of view upto 18 deg^2. The TMTS has started to monitor the LAMOST sky…
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…
Double-, triple-line spectroscopic candidates in the LAMOST Medium-Resolution Spectroscopic Survey
Chun-qian Li, Jian-rong Shi, Hong-liang Yan +3
The LAMOST Medium-Resolution Spectroscopic Survey (LAMOST-MRS) provides an unprecedented opportunity for detecting multi-line spectroscopic systems. Based on the method of Cross-Co…
Lithium Evolution of Giant Stars Observed by LAMOST and Kepler
Jinghua Zhang, Jian-Rong Shi, Hong-Liang Yan +8
Mapping lithium evolution for evolved stars will provide restrictions and constraints on the fundamental stellar interior physical processes, which further shed light on our unders…
LAMOST Medium-Resolution Spectral Survey of Galactic Nebulae (LAMOST-MRS-N): Subtraction of Geocoronal Halpha Emission
Wei Zhang, Hong Wu, Chaojian Wu +10
We introduce a method of subtracting geocoronal Halpha emissions from the spectra of LAMOST medium-resolution spectral survey of Galactic nebulae (LAMOST-MRS-N). The flux ratios of…
Stellar labels for hot stars from low-resolution spectra - I. the HotPayne method and results for 330,000 stars from LAMOST DR6
Maosheng Xiang, Hans-Walter Rix, Yuan-Sen Ting +9
We set out to determine stellar labels from low-resolution survey spectra of hot, OBA stars with effective temperature (Teff) higher than 7500K. This fills a gap in the scientific…
The Lithium Abundances from the Large Sky Area Multi-object Fiber Spectroscopic Telescope Medium-resolution Survey. I. The Method
Qi Gao, Jian-Rong Shi, Hong-Liang Yan +9
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…
Mapping the Galactic Disk with the LAMOST and Gaia Red Clump Sample VII: the Stellar Disk Structure Revealed by the Mono-abundance Populations
Zheng Yu, Ji Li, Bingqiu Chen +7
Using a sample of 96,201 primary red clump (RC) stars selected from the LAMOST and Gaia surveys, we investigate the stellar structure of the Galactic disk. The sample stars show tw…
Element abundance analysis of the metal-rich stellar halo and high-velocitythick disk in the galaxy
Haifan Zhu, Cuihua Du, Yepeng Yan +3
Based on the second Gaia data release (DR2) and APOGEE (DR16) spectroscopic surveys, wedefined two kinds of star sample: high-velocity thick disk (HVTD) with and metal-…
Beyond spectroscopy. I. Metallicities, distances, and age estimates for over twenty million stars from SMSS DR2 and Gaia EDR3
Yang Huang, Timothy C. Beers, Christian Wolf +8
Accurate determinations of stellar parameters and distances for large complete samples of stars are keys for conducting detailed studies of the formation and evolution of our Galax…
Contribution of collapsars, supernovae, and neutron star mergers to the evolution of r-process elements in the Galaxy
Yuta Yamazaki, Toshitaka Kajino, Grant J. Mathews +3
We study the evolution of rapid neutron-capture process (r-process) isotopes in the Galaxy. We analyze relative contributions from core collapse supernovae (CCSNe), neutron star me…
HCT/HESP study of two carbon stars from the LAMOST survey
J. Shejeelammal, Aruna Goswami, Jianrong Shi
Carbon stars, enhanced in carbon and neutron-capture elements, provide wealth of information about the nucleosynthesis history of the Galaxy. In this work, we present the first eve…
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…
Two substructures in the nearby stellar halo found in Gaia and RAVE
Hefan Li, Cuihua Du, Yanbin Yang +4
We use the second Gaia data release (Gaia DR2), combined with RAVE spectroscopic surveys, to identify the substructures in the nearby stellar halo. We select 3,845 halo stars kinem…