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School of Physics and Astronomy @ SJTU || Department of Astronomy @ SJTU || The TDLI || Shanghai Astronomical Observatory


Research interests of the galaxy formation research group

Halo occupation models:

  • Connection between the galaxies and the dark matter halos.

  • Mock catalogues based on Conditional Luminosity Function (CLF) model.

  • Constrain cosmological parameters using halo occupation model.

  • Properties of the satellite galaxies.

Galaxy Groups and Clusters:

  • Searching galaxy groups with a halo-based group finder.

  • Searching galaxy clusters from photometric redshift surveys.

  • Probe the halo-halo (group-group) bias from the observations.

  • Measuring the halo occupations directly from the observations.

Cosmological weak lensing:

  • Estimate the shear field, the lensing power spectrum.

  • Probe the mass-light relation using numerical simulations/halo occupation model.

  • To infer the mass-light relation from the galaxy-galaxy lensing signal.

  • To infer the mass-light relation from the group-galaxy lensing signal.

Galaxy Formation and Evolution:

  • Semi-analytical models.

  • Numerical simulations.

  • Understanding the galaxy formation and evolution using halo occupation models.

Large-Scale Structure of the Universe:

  • Clustering properties of galaxies in large redshift surveys (i.e. 2dFGRS and SDSS).

  • Traditional analysis:

    • 2PCF, 3PCF, power spectrum, bispectrum, etc.

  • Discrete Wavelet Transform (DWT) analysis:

    • power spectrum, velocity field, redshift distortion, scale-scale correlation.

N-body and Gas Simulations:

  • N-body simulations of structure formation.

  • Gas simulations... to probe the properties of IGM



Department of Astronomy, SJTU
Address: Dongchuan Rd.800, Shanghai, P.R.China 200240
Email: xyang@sjtu.edu.cn