Search Results - Shi Shao

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    A North–South Metallicity Asymmetry in the Outer Galactic Disk—Evidence for the Pericentric Passage of the Sagittarius Dwarf Galaxy

    A North–South Metallicity Asymmetry in the Outer Galactic Disk—Evidence for the Pericentric Passage of the Sagittarius Dwarf Galaxy by Chun Wang, Yang Huang, Timothy C. Beers, Payel Das, Haibo Yuan, Lizhi Xie, Shi Shao

    Published 2025-01-01

    We present maps of the mean metallicity distributions on the Galactocentric R – Z plane at different azimuthal angles using red clump stars selected from the LAMOST and APOGEE surveys. In the inner disk ( R  < 11 kpc), the metallicity distribution is symmetric between the upper and lower disk. Ho...

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

    The Shape and Mass of the Galactic Dark Matter Halo from the Axisymmetric Jeans Model by Lan Zhang, Xiang-Xiang Xue, Ling Zhu, Ruizhi Zhang, Chengqun Yang, Shi Shao, Jiang Chang, Feilu Wang, Hao Tian, Gang Zhao, Chao Liu

    Published 2025-01-01

    We explore the density profile, shape, and virial mass of the Milky Way’s dark matter halo, using K giants (KGs) from the Large Sky Area Multi-Object Fiber Spectroscopic Telescope and Sloan Digital Sky Survey (SDSS)/SEGUE as well as blue horizontal branch stars (BHBs) from SDSS. Incorporating Gaia D...

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