Rick, that's a nice pair, good detail in both of them.

Stefan

"Rick Johnson" schrieb im Newsbeitrag
ster.com...
Arp 89, KPG 168, is classed by Arp almost the same as Arp 58 except for
one word. He has it under spiral galaxy with large, high surface
brightness companion. And the companion is indeed, much larger than
we've seen in arp 52 and 58. The main galaxy is also cataloged as NGC
2648 with the companion being CGCG 060-036. The KPG designation though
is for both galaxies and stand for "Karachentsev Isolated Pairs of
Galaxies Catalogue". These two sure are isolated. Nothing but faint
distant galaxies with little available data are in my 1" per pixel
image. The main galaxy is classed as a Sb spiral. Usually you'd see
such a galaxy as having rather blue arms. In this case it is rather
uniformly the reddish yellow color of most S0 galaxies. One paper
even remarked on its completely flat color profile. Until I read that I
was wondering about my processing, I just couldn't eke out any blue in
the arms no matter what I did.

The companion, classed as Sc however looks like a typical interacting
spiral with nice vivid blue arms indicating new star formation is going
on there. It also shows some tidal distortion with blue stars ripped
from its arms. The main galaxy seems immune to the interaction with no
new stars and no distortions. Odd. Both are about 107 million light
years away so are likely really interacting. They are found in the
constellation of Lynx.

Arp's photo of this pair with the 200" telescope is at:
http://nedwww.ipac.caltech.edu/level...big_arp89.jpeg

14" LX200R @ f/10, L=4x10' RGB=2x10' all binned 2x2, STL-11000XM,
Paramount ME

Rick
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Correct domain name is arvig and it is net not com. Prefix is correct.
Third character is a zero rather than a capital "Oh".