Environmental Dependence of Star Formation and Galaxy Colors around A2029 后印本

摘要: Environmental processes drive galaxy evolution, with the impact varying significantly across different stellar masses. We present a comprehensive environmental analysis of the galaxies within a 10∘ × 10∘ field around A2029, utilizing high-density spectroscopic data from the DESI and SDSS surveys. We investigate the quenched fraction (fQ) and red fraction (fred) as functions of local surface density ( ) across three stellar mass intervals (low-mass: ; medium-mass: ; high-mass: ( ). Our results show that, for galaxies of all masses, both star formation activity and galaxy color are strongly correlated with the local density. Although the environmental dependence of both the quenched and red fractions is somewhat weaker in low-mass galaxies than in their high-mass counterparts, the variations remain significant. This suggests that galaxy colors, even for low-mass systems, can serve as effective tracers of large-scale structure.