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The 2nd Shanghai Assembly on Cosmology and Structure Formation

October 30, 2023 to November 3, 2023
TD Lee Library
Asia/Shanghai timezone

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Session

Galaxy: dynamics & archaeology

Oct 30, 2023, 3:40 PM
Conference Hall (TD Lee Library)

Conference Hall

TD Lee Library

901 Jianchuan Road, Minhang District, Shanghai, 200240

Conveners

Galaxy: dynamics & archaeology

  • Alessandro Sonnenfeld

Presentation materials

There are no materials yet.

  1. 1. Spurious heating of stellar motions by dark matter particles in cosmological hydrodynamical simulations
    Aaron Ludlow (ICRAR-UWA)
    10/30/23, 3:40 PM
    Galaxy Simulation
    Talk

    Simulated galaxies and their dark matter (DM) halos are resolved by fewer particles than there are stars and DM particles in real galaxies and, as a result, are subject to spurious evolution due to gravitational scattering. I will present results from a suite of idealized simulations designed to study the effect of spurious collisional heating on the kinematics and morphologies of simulated...

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  2. 3. Uncover galaxies’ merger history through the chemo-dynamical structures
    Ling Zhu (Shanghai Astronomical observatory)
    10/30/23, 4:05 PM
    Galaxy Structure
    Talk

    Deriving galaxies’ past merger history is challenging, albeit possible with their 3D internal chemical-dynamical structures illustrated by the MW with resolved single stars. Modern IFU spectrographs offer the ability to map the spatial distribution of the motions, ages, and chemical abundances of stars for many nearby galaxies. But the information is still blended along the line-of-sight. To...

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  3. 47. Quantifying the stellar ages of dynamically-separated bulges and disks of CALIFA spiral galaxies
    Yunpeng Jin
    10/30/23, 4:25 PM
    Galaxy Formation
    Talk

    We employ a recently-developed population-orbit superposition technique to simultaneously fit the stellar kinematic and age maps of 82 CALIFA spiral galaxies, and obtain the ages of stars in different dynamical structures. We first evaluate the capabilities of this method on CALIFA-like mock data created from the Auriga simulations. The recovered mean ages of dynamically cold, warm and hot...

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  4. 60. Constraining dark matter content of galaxies by combining IFU stellar kinematics and integrated HI spectrum
    yu lei (SHAO)
    10/30/23, 4:40 PM
    Galaxy Structure
    Talk

    Dark matter content within a few Re of galaxies can provide important test of hydrodynamical cosmological simulations, but we are still lacking of reliable measurements of dark matter content in a large number of galaxies across the Hubble types. IFU surveys have provide stellar kinematics for thousands of nearby galaxies, but they usually only cover the inner 1-2Re of galaxies. To strongly...

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