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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: halo occupation

Nov 1, 2023, 10:35 AM
Conference Hall (TD Lee Library)

Conference Hall

TD Lee Library

901 Jianchuan Road, Minhang District, Shanghai, 200240

Conveners

Galaxy: halo occupation

  • Hong Guo (Shanghai Astronomical Observatory)

Presentation materials

There are no materials yet.

  1. 34. CSST large scale structure analysis pipeline: constructing ideal mock galaxy redshift surveys
    Xiaohu Yang (SJTU)
    11/1/23, 10:35 AM
    Galaxy-Halo connection
    Talk

    We set out to construct a set of ideal mock galaxy redshift surveys (MGRSs) for the future Chinese Space-station Survey Telescope (CSST) observation, where subsequent survey selection effects can be added and evaluated.

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  2. 9. The Conditional Colour-Magnitude Distribution
    Haojie Xu (SHAO)
    11/1/23, 11:00 AM
    Galaxy-Halo connection
    Talk

    The Conditional Colour-Magnitude Distribution (CCMD) is a comprehensive model of the colour-magnitude-halo mass distribution of present day galaxies. It reproduces well the observed galaxy abundance and clustering of galaxies defined by arbitrary luminosity and colour cuts. We present a comprehensive comparison of the galaxy colour--magnitude--halo mass relation from the CCMD galaxy mocks and...

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  3. 58. Galaxy-(sub)halo relation in the eye of machine learning
    Xiaoju Xu (SJTU)
    11/1/23, 11:20 AM
    Galaxy-Halo connection
    Talk

    Machine learning techniques are widely implemented to predict galaxy properties based on halo or subhalo properties in semi-analytic models (SAM) and hydrodynamic simulations. The multivariate relation between galaxies and their (sub)halos can be efficiently captured and reproduced. I will present our results on predicting galaxy properties based on different galaxy formation models....

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  4. 45. A Galaxy Group Finder Based on Machine Learning
    JUNTAO MA (NAOC)
    11/1/23, 11:40 AM
    Galaxy-Halo connection
    Talk

    Galaxy groups and clusters represent systems of galaxies residing within the same dark matter halos. This inherent connection to dark matter halos positions galaxy groups as a direct avenue for addressing pivotal questions in astrophysics, such as the role of the environment in galaxy formation and evolution, as well as the cosmic density field. Various group-finding methodologies have been...

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