Mike,
you are starting to pick up some of the
strangeness of the companion galaxy NGC 1097A.
Have you seen this image of it, taken by the VLT and VIMOS
(this is a cutout from ESO Public Image No. eso0438d)
Nice angular resolution on this one!
Arguably,
this little galaxy is a lot weirder than its big friend NGC 1097.
Bad Galaxy Man's puzzlers of the day;
What type of galaxy is this?
What Hubble type is it?
What is its structure?
What is its orientation in the sky?
It seems highly probable that while NGC 1097 seems to have some unusual outer arm structures due to a likely interaction with NGC 1097A, the big galaxy is modifying the little galaxy in a very major way.
Best Regards,
Robert
P.S.
I think that the origin of those structures in the Olsen-Sidonio deep field of Centaurus A should be modelled by some of the "pros".