Dynamical-to-baryonic mass ratio
Arp 105N and Arp 105S don't seem to have enough 'crunchy' (or dark) matter.
Technical definition
A measure of the amount of unseen, non-luminous matter in a galaxy compared to its total mass.
Arp 105N and Arp 105S don't seem to have enough 'crunchy' (or dark) matter.
A measure of the amount of unseen, non-luminous matter in a galaxy compared to its total mass.