86 citations · 322 across the 11 of their papers we have counts for
11 papers
Chemical Tagging N-rich Field Stars with High-resolution Spectroscopy
Jincheng Yu, Baitian Tang, J. G. Fernandez-Trincado +3
We measure chemical abundances for over 20 elements of 15 N-rich field stars with high resolution () optical spectra. We find that Na, Mg, Al, Si, and Ca abundances o…
Multiple populations in low mass globular clusters: Palomar 13
Baitian Tang, Yue Wang, Ruoyun Huang +7
Since the discovery of chemically peculiar stars in globular clusters in the last century, the study of multiple populations has become increasingly important, given that chemical…
Modelling unresolved binaries of open clusters in color-magnitude diagram. I. method and application of NGC3532
Lu Li, Zhengyi Shao, Zhao-Zhou Li +3
The binary properties of open clusters place crucial constraints on star formation theory and clusters' dynamical evolution. We develop a comprehensive approach that models the col…
LAMOST Medium-Resolution Spectroscopic Survey (LAMOST-MRS): Scientific goals and survey plan
Chao Liu, Jianning Fu, Jianrong Shi +38
Since September 2018, LAMOST starts a new 5-year medium-resolution spectroscopic survey (MRS) using bright/gray nights. We present the scientific goals of LAMOST-MRS and propose a…
On the Chemical and Kinematic Consistency Between N-rich Metal-poor Field Stars and Enriched Populations in Globular Clusters
Baitian Tang, J. G. Fernandez-Trincado, Chao Liu +5
Interesting chemically peculiar field stars may reflect their stellar evolution history and their possible origin in a different environment from where they are found now, which is…
Stellar Population Properties of Ultracompact Dwarfs in M87: a Mass-metallicity Correlation Connecting Low-metallicity Globular Clusters and Compact Ellipticals
Hong-Xin Zhang, Thomas H. Puzia, Eric W. Peng +12
We derive stellar population parameters for a representative sample of ultracompact dwarfs (UCDs) and a large sample of massive globular clusters (GCs) with stellar masses $\gtrsim…
The age-velocity dispersion relation of the Galactic discs from LAMOST-Gaia data
Jincheng Yu, Chao Liu
We present the age-velocity dispersion relation (AVR) in three dimensions in the solar neighbourhood using 3,564 commonly observed sub-giant/red-giant branch stars selected from LA…
Simulations of Fractal Star Cluster Formation: I. New Insights for Measuring Mass Segregation of Star Clusters with SubStructure
Jincheng Yu, Thomas H. Puzia, Congping Lin +1
We compare the existent methods including the minimum spanning tree based method and the local stellar density based method, in measuring mass segregation of star clusters. We find…
The selection of LEGUE disk targets for LAMOST's pilot survey
Li Chen, Jinliang Hou, Jincheng Yu +18
We describe the target selection algorithm for the low latitude disk portion of the LAMOST Pilot Survey, which aims to test systems in preparation for the LAMOST spectroscopic surv…
A Test for Radial Mixing Using Local Star Samples
Jincheng Yu, J. A. Sellwood, Carlton Pryor +2
We use samples of local main-sequence stars to show that the radial gradient of [Fe/H] in the thin disk of the Milky Way decreases with mean effective stellar temperature. Many of…
Rapid dynamical mass segregation and properties of fractal star clusters
Jincheng Yu, Richard de Grijs, Li Chen
We investigate the evolution of young star clusters using N-body simulations. We confirm that subvirial and fractal-structured clusters will dynamically mass segregate on a short t…