2007

Galaxy Groups in the SDSS DR4: I. The Catalogue and Basic Properties

Yang, Xiaohu, Mo, H. J., Bosch, Frank C. van den et al.

Understand

We use a modified version of the halo-based group finder developed by Yang et al.

  • to select galaxy groups from the Sloan Digital Sky Survey (SDSS DR4).
  • In the first step, a combination of two methods is used to identify the centers of potential groups and to estimate their characteristic luminosity.
  • Using an iterative approach, the adaptive group finder then uses the average mass-to-light ratios of groups, obtained from the previous iteration, to assign a tentative mass to each group.

Reading the bibliography…