16 citations · 29 across the 12 of their papers we have counts for
6 papers · 1 filter
Comparison of bar formation mechanisms I: does a tidally-induced bar rotate slower than an internally-induced bar?
Yirui Zheng, Juntai Shen
Galactic bars can form via the internal bar instability or external tidal perturbations by other galaxies. We systematically compare the properties of bars formed through the two m…
Dynamical Origin of the Vertical Metallicity Gradient of the Milky Way Bulge
Bin-Hui Chen, Juntai Shen, Zhong Liu
A vertical metallicity gradient in the Milky Way bulge is well-established. Yet, its origin has not been fully understood under the Galactic secular evolution scenario. We construc…
The Milky Way bar potential constrained by the kinematics of SiO maser stars in BAaDE Survey
Tian-Ye Xia, Juntai Shen, Zhi Li +5
We introduce a novel method that utilizes the longitude-velocity (l-v) envelope to constrain the Milky Way (MW) bar potential. Previous work (Habing 2016) used the l-v diagram to e…
A slightly oblate dark matter halo revealed by a retrograde precessing Galactic disk warp
Yang Huang, Qikang Feng, Tigran Khachaturyants +7
The shape of the dark matter (DM) halo is key to understanding the hierarchical formation of the Galaxy. Despite extensive efforts in recent decades, however, its shape remains a m…
Deciphering the Kinematic Substructure of Local Dark Matter with LAMOST K Giants
Hai Zhu, Rui Guo, Juntai Shen +5
Numerical simulations indicate that correlations exist between the velocity distributions of stars and dark matter (DM). We study the local DM velocity distribution based on these…
Insight into the Galactic Bulge Chemodynamical Properties from Gaia DR3
Xiaojie Liao, Zhaoyu Li, Iulia Simion +4
We explore the chemodynamical properties of the Galaxy in the azimuthal velocity and metallicity [Fe/H] space using red giant stars from Gaia Data Release 3. The row-normaliz…