Login

The 2nd Shanghai Assembly on Cosmology and Structure Formation

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

Contact

Session

Galaxy: gas

Nov 2, 2023, 9:00 AM
Conference Hall (TD Lee Library)

Conference Hall

TD Lee Library

901 Jianchuan Road, Minhang District, Shanghai, 200240

Conveners

Galaxy: gas

  • Cheng Li (Tsinghua University)

Presentation materials

There are no materials yet.

  1. 66. Deep HI survey in M31 halo region with FAST
    Jie Wang
    11/2/23, 9:00 AM
    Galaxy Structure
  2. 4. On the origin of red but HI-rich galaxies in the local universe
    Xiao Li (Tsinghua University)
    11/2/23, 9:25 AM
    Galaxy Formation
    Talk

    Generally, most of the red galaxies in the local universe are observed to be quenched and have little cold gas, suggesting that the depletion/removal of cold gas is a necessary condition for galaxy quenching. However, current HI surveys are too shallow to detect the HI gas of red galaxies. In this work, we construct a new HI estimator based on the scaling relations of HI gas mass with a...

    Go to contribution page
  3. 48. FAST-MeerKAT synergy: evolution of HI gas in galaxies, IGM and CGM
    Hengxing Pan (University of Oxford)
    11/2/23, 9:40 AM
    Galaxy Structure
    Talk

    The neutral hydrogen (HI) in galaxies, intergalactic (IGM) and circumgalactic (CGM) mediums can trace the matter flow from large-scale structures to galaxies, and plays important roles in the process of galaxy formation and evolution. In this talk, I will present our efforts to detect the IGM and CGM using HI emission line with the world's largest single-dish radio telescope-FAST combined with...

    Go to contribution page
  4. 16. HI content of massive red spiral galaxies observed by FAST
    Lan Wang (NAOC)
    11/2/23, 9:55 AM
    Galaxy Formation
    Talk

    A sample of 279 massive red spirals was selected optically by Guo et al., among which 166 galaxies have been observed by the ALFALFA survey. In this work, we observe HI content of the rest 113 massive red spiral galaxies using the Five-hundred- meter Aperture Spherical radio Telescope (FAST). 75 of the 113 galaxies have HI detection with a signal-to-noise ratio (S/N) greater than 4.7. Compared...

    Go to contribution page
  5. 63. Baryonic Tully-Fisher relation at low mass end
    Huijie Hu (NAOC)
    11/2/23, 10:10 AM
    Galaxy Structure
    Talk

    The baryonic Tully-Fisher relation (BTFR), which connects the baryonic mass of galaxies with their circular velocities, has been validated across a wide range of galaxies, from dwarf galaxies to massive galaxies. In conflict with observations, modern simulations predict a break-point at 10^9M_sun, below which BTFR bends down toward low masses. This discrepancy is one of the small scale...

    Go to contribution page
Building timetable...