Arp 283 (Gary Imm)

Arp 283

This object is a pair of galaxies located 85 million light years away in the constellation of Lynx at a declination of +42 degrees. Each galaxy spans about 2.5 arc-minutes in our apparent view, which corresponds to a diameter of 60,000 light years.

This object was classified by Dr. Arp into the category of Double Galaxies – Infill and Attraction. The larger galaxy to the right is the 12.3 magnitude galaxy NGC 2798. Its partner is 14.3 magnitude galaxy NGC 2799.

I love the contrasting colors of these 2 galaxies. NGC 2798 has a severely curled upper arm and interesting detail in its dust lanes around the core. NGC 2799 gives us a fascinating arcing edge-on view, with interesting changes in brightness along the length of the galaxy. The galaxies appear to be faintly connected by star streams but it is hard to tell definitively.

Although these galaxies visually look to be at the same distance, the data shows that they are 5 million light years apart. This explains why we see some disturbance, perhaps from a past closer encounter, but both galaxy structures remain intact.

The galaxy at the bottom of the image, UGC 4904, is fascinating to me. It has a unique structure, severely disturbed with the appearance of a bar. Its blue color indicated recent star formation, likely as a result of the disturbance. This galaxy is in the same vicinity as the other 2, so perhaps some interaction occurred here in the past.

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Status	Advanced success
Started	...
Astrometry.net job	4185825
PixInsight job	4WDNZM323QZA5JXSEPOJEF9KRS11H2DI
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	09h17m26s.422
RA (top/left)	09h17m58s.900
RA (top/right)	09h16m43s.640
RA (bottom/right)	09h16m54s.959
RA (bottom/left)	09h18m09s.672

Dec (center)	+42°00′02″.91
Dec (top/left)	+42°07′19″.64
Dec (top/right)	+42°04′47″.99
Dec (bottom/right)	+41°52′44″.94
Dec (bottom/left)	+41°55′15″.96

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Arp 283

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