This
Astrobin Debut Object, also known as NGC 7393, is a barred spiral galaxy located 120 million light years away in the constellation of Aquarius at a declination of -6 degrees. This galaxy spans 1.8 arc-minutes in our apparent view, which corresponds to a diameter of 80,000 light years.
In his
Arp catalog, Dr. Arp classified this object into the category of Spiral Galaxies with Detached Segments.
The disk structure is interesting, particularly the arm structure, or more precisely the lack thereof. The barred core is ringed on the bottom half by a portion of a fairly standard looking inner ring. But the top half of this “ring” looks to be a series of blue star clusters, reddish Ha regions, and dust bands. The outer disk is very faint with no arm structure at all.
The odd disk structure here suggests that it has been disturbed by another galaxy. I don’t see any nearby companion candidates. Perhaps the 2 blue regions to the upper left of the core are actually companion dwarf galaxies.
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