activity
20242026
most citedAn Actinide-boost Star Discovered in the Gaia-Sausage-Enceladus

5 citations · 7 across the 5 of their papers we have counts for

collaborators

8 papers

astro-ph.GA2026

HR-GO II: chemical abundances of low- retrograde dynamically-tagged-groups: Revealing Thamnos as a very metal-poor substructure

Renjing Xie, Zhen Yuan, Haining Li +12

Milky Way halo substructures identified in dynamical space are known to suffer from contamination from the Milky Way in-situ stars, which makes their accreted origins uncertain. We…

astro-ph.GA2025

A 3D Chemodynamical Census of Inner-Galaxy Metal-poor Giants to [Fe/H]~-3.5

Shenglan Sun, Yang Huang, Fangzhou Jiang +8

The earliest assembly of the Milky Way remains poorly understood, yet the spatial, chemical, and kinematic properties of its most metal-poor stars provide a unique fossil record of…

astro-ph.GA2025

Chasing the formation history of the Galactic metal-poor disc

Xiaokun Hou, Ruizhi Zhang, Haining Li +1

In our previous work, we identified metal-poor stars ([Fe/H] -1.0) from the LAMOST Survey. This work estimates their chemical abundances and explores the origin a…

astro-ph.GA2025

The Rotating Bulge and Halo in the Milky Way: Evidence of Angular Momentum Transferred from the Decelerating Bar

Zhuohan Li, Chengdong Li, Gang Zhao +2

Recent observations indicate that both the Milky Way bulge and inner halo exhibit angular momentum, although the origin and evolution of this prograde signature remain ambiguous. O…

astro-ph.GA20252 cited

Main-sequence Turnoff Stars as Probes of the Ancient Galactic Relic: Chemo-dynamical Analysis of a Pilot Sample

Renjing Xie, Haining Li, Ruizhi Zhang +5

The main-sequence turnoff (MSTO) stars well preserve the chemical properties where they were born, making them ideal tracers for studying the stellar population. We perform a detai…

astro-ph.GA2025

The Shape and Mass of the Galactic Dark Matter Halo from the Axisymmetric Jeans Model

Lan Zhang, Xiang-Xiang Xue, Ling Zhu +8

We explore the density profile, shape, and virial mass of the Milky Way's dark matter halo using K giants (KG) from LAMOST and SDSS/SEGUE, as well as blue horizontal branch (BHB) s…