Arp 179 (Gary Imm)

Celestial hemisphere: Southern · Constellation: Eridanus (Eri)

Arp 179

This Astrobin Debut Object, also known as LEDA 11432, is a small faint disturbed galaxy located 200 million light years away in the constellation of Eridanus at a declination of -5 degrees. This magnitude 17 galaxy spans 45 arc-seconds in our apparent view, which corresponds to a diameter of 50,000 light years.

In his Arp catalog, Dr. Arp classified this object into the category of Galaxies with Narrow Filaments.

This appears to me to be a small spiral galaxy with a long tidal plume. What created the plume? No disturbance candidates are anywhere to be seen. The small galaxy to the left is much further away at about 1 billion light years.

Perhaps this object had a past merger with a small dwarf galaxy and we are seeing the remnants of that.

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Description: Comparison to Original Arp Image

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The “AstroBin Image of the Day and Top Picks”, or IOTD/TP, is a long-running system to promote beautiful, interesting, peculiar, or otherwise amazing astrophotographs, with a focus on technical excellence. Learn more.

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Status	Advanced success
Started	...
Astrometry.net job	5021337
PixInsight job	7UWT7OTP8OZA6HEH70RONVZ0K4MQOFPZ
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	03h02m00s.488
RA (top/left)	03h01m36s.770
RA (top/right)	03h02m23s.285
RA (bottom/right)	03h02m24s.184
RA (bottom/left)	03h01m37s.693

Dec (center)	-04°41′26″.69
Dec (top/left)	-04°45′23″.25
Dec (top/right)	-04°45′43″.17
Dec (bottom/right)	-04°37′29″.37
Dec (bottom/left)	-04°37′10″.33

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Arp 179

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