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astro-ph.GA2024
Compositions of the Hercules-Aquila Cloud and Virgo Over-density
Dashuang Ye, Cuihua Du, Mingji Deng +4
Based on a sample of K giant from Large sky Area Multi-Object fiber Spectroscopic Telescope (LAMOST) Data Release 8 and a sample of RR Lyrae (RRL) from \textit{Gaia} Data Release 3…
astro-ph.GA2024
The origin of High-velocity stars considering the impact of the Large Magellanic Cloud
Jiwei Liao, Cuihua Du, Mingji Deng +5
Utilizing astrometric parameters sourced from \textit{Gaia} Data Release 3 and radial velocities obtained from various spectroscopic surveys, we identify 519 high-velocity stars (H…
astro-ph.GA2023
Dynamical substructures of local metal-poor halo
Dashuang Ye, Cuihua Du, Jianrong Shi +1
Based on 4,\,098 very metal-poor (VMP) stars with 6D phase-space and chemical information from \textit{Gaia} DR3 and LAMOST DR9 as tracers, we apply an unsupervised machine learnin…