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astro-ph.GA2026
Mass Distribution of M31 from its Rotation Curve up to 167 kpc
Hao Wu, Yang Huang, Huawei Zhang +2
The mass distribution of the Andromeda galaxy (M31) is fundamental for understanding its dark matter content, assembly history, and dynamical role within the Local Group. However,…
astro-ph.GA2024
The LAMOST Spectroscopic Survey of Supergiants in M31 and M33
Hao Wu, Yang Huang, Huawei Zhang +3
We present systematic identifications of supergiants of M31/M33 based on massive LAMOST spectroscopic survey. Radial velocities of nearly 5000 photometrically selected M31/M33 supe…