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The nature of red dwarf galaxies
Yu Wang, Xiaohu Yang, H. J. Mo +5
Using dark matter halos traced by galaxy groups selected from the Sloan Digital Sky Survey Data Release 4, we find that about 1/4 of the faint galaxies ($\rmag >-17.05$, hereafter…
Environmental Effects on Satellite Galaxies: The Link Between Concentration, Size and Colour Profile
Simone M. Weinmann, Guinevere Kauffmann, Frank C. van den Bosch +5
Using the SDSS DR4 group catalogue of Yang et al. (2007), we investigate sizes, concentrations, colour gradients and surface brightness profiles of central and satellite galaxies.…
Satellite Ecology: The Dearth of Environment Dependence
Frank C. van den Bosch, Anna Pasquali, Xiaohu Yang +4
Using the Sloan Digital Sky Survey (SDSS) galaxy group catalogue of Yang et al. (2007), we study the average colour and average concentration of satellite galaxies as function of (…
The clustering of SDSS galaxy groups: mass and color dependence
Yu Wang, Xiaohu Yang, H. J. Mo +3
We use a sample of galaxy groups selected from the SDSS DR 4 with an adaptive halo-based group finder to probe how the clustering strength of groups depends on their masses and col…
The Importance of Satellite Quenching for the Build-Up of the Red Sequence of Present Day Galaxies
Frank C. van den Bosch, Daniel Aquino, Xiaohu Yang +5
In the current paradigm, red sequence galaxies are believed to have formed as blue disk galaxies that subsequently had their star formation quenched. Since red-sequence galaxies ty…
Dependence of the Local Reionization History on Halo Mass and Environment: Did Virgo Reionize the Local Group?
Simone M. Weinmann, Andrea V. Maccio', Ilian T. Iliev +2
The reionization of the Universe has profound effects on the way galaxies form and on their observed properties at later times. Of particular importance is the relative timing of t…