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Arp 17, Gary Imm

Arp 17

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Arp 17, Gary Imm

Arp 17

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Description

This Astrobin Debut Object object, also known as UGC 3972, is a distorted spiral galaxy located 240 million light years away in the constellation of Camelopardalis at a declination of +74 degrees. It spans 1 arc-minute in our apparent view, which corresponds to a diameter of 70,000 light years. This galaxy was classified by Dr. Arp into the category of Spiral Galaxies – Detached Segments. I think for Dr. Arp that category was the equivalent of throwing in the towel. I wish he would have been brutally honest and just had a category called Spiral Galaxies - Your Guess is as Good as Mine!

This is a tough one to understand. The two bright areas are classified as 2 different galaxies – PGC 21685 (magnitude 16.0) on the top and PGC 21693 (magnitude (14.6) in the center. These 2 bright areas are connected by bending star streams. But it is hard to visualize what is happening here. I believe that the center bright area is the core of the main object we are seeing. But the bright area above doesn't look like another galaxy core to me - it is much more blue than white, and there is so little signal above, left or right of it. A set of star clusters makes more sense to me, but that still doesn't look quite right.

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