Arp 328 is in the Galaxy Chains class. Dr. Arp's Atlas note was "center
has semi-stellar component". Arp 328 is also Hickson Compact Group 72, and
the Hickson numbers are the best identification of the individual galaxies.
Only the galaxy at the SE end of the chain does not have a Hickson number and it
is in the VV catalog as 165g. The Hickson galaxies, starting at the N end,
are 72A, 72B, 72D, 72E, 72F (the semi-stellar component), and 72C. Note
that 72D obscures 72B where they overlap; more often, we see them blend.
|10-inch Newtonian, StarlightXpress MX716, 22 minutes|