Rich cluster [M ~ 10 15 M sun ] Large groups (Small clusters) [M ~ 10 13 - 10 14 M sun ] Environmental effects on neutral and molecular hydrogen of galaxies.
![Rich cluster [M ~ 10 15 M sun ] Large groups (Small clusters) [M ~ 10 13 - 10 14 M sun ] Environmental effects on neutral and molecular hydrogen of galaxies.](https://static.fdocuments.net/doc/330x215/56649d315503460f94a0a1da/rich-cluster-m-10-15-m-sun-large-groups-small-clusters-m-10-13-.jpg)
