http://arxiv.org/abs/2002.08400
We analyze a set of volume limited samples from the SDSS to study the dependence of galaxy colour on different environments of the cosmic web. We measure the local dimension of the galaxies to determine their embedding environments and find that the filaments host a higher fraction of red galaxies than the sheets at each luminosity. At a fixed luminosity, the fraction of red galaxies in filaments and sheets increases with the size of these structures. This suggests that the bigger structures have a larger baryon reservoir favouring higher accretion rate and larger stellar mass. At a fixed length scale, the fraction of red galaxies monotonically increases in all the environments with increasing luminosity. We also find that the average colour of the red and blue populations are systematically higher in the environments with smaller local dimension and increases monotonically in all the environments with luminosity. We observe that the bimodal nature of the galaxy colour distribution persists in all environments and all luminosities suggesting that the transformation from blue to red galaxy can occur in all environments.
B. Pandey and S. Sarkar
Fri, 21 Feb 20
36/67
Comments: 13 pages, 9 figures, 5 tables, Submitted to MNRAS
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