We utilize the HSC CAMIRA cluster catalog and the photo- z galaxy catalog constructed in the HSC wide field ( S16A ) , covering \sim 174 deg ^ { 2 } , to study the star formation activity of galaxies in different environments over 0.2 < z < 1.1 .
We probe galaxies down to i \sim 26 , corresponding to a stellar mass limit of log _ { 10 } ( M _ { * } /M _ { \odot } ) \sim 8.2 and \sim 8.6 for star-forming and quiescent populations , respectively , at z \sim 0.2 .
The existence of the red sequence for low stellar mass galaxies in clusters suggests that the environmental quenching persists to halt the star formation in the low-mass regime .
In addition , star-forming galaxies in groups or clusters are systematically biased toward lower values of specific star formation rate by 0.1 – 0.3 dex with respect to those in the field and the offsets shows no strong redshift evolution over our redshift range , implying a universal slow quenching mechanism acting in the dense environments since z \sim 1.1 .
Moreover , the environmental quenching dominates the mass quenching in low mass galaxies , and the quenching dominance reverses in high mass ones .
The transition mass is greater in clusters than in groups , indicating that the environmental quenching is more effective for massive galaxies in clusters compared to groups .