Arp 143 (Gary Imm)

Celestial hemisphere: Northern · Constellation: Lynx (Lyn) · Contains: NGC 2444 · NGC 2445

Arp 143

This object is a pair of small interacting spiral galaxies located 180 million light years away in the constellation of Lynx. Both galaxies are about 75,000 light years in diameter and are less than 1 minute in apparent diameter. Both galaxies have significantly disturbed structures.

The top yellow galaxy is NGC 2444. This galaxy is described as an elliptical galaxy in a paper. Its looping star stream forms an almost continuous ring.

The strangely shaped bottom blue galaxy, NGC 2445, looks like it originally was a spiral galaxy. The galaxy has a bright yellow core which is centered in a small disk-like white inner region. Surrounding this region are five bright blue star forming regions which are roughly equally spaced around the nucleus. The contrast between the yellow core and the blue outer regions is appealing to me.

I don't believe I have ever since another galaxy with this type of triangular, pyramid-like shape. The blue star forming regions are incredibly intense in color and must reflect a tremendous amount of new star activity.

The pretty white grand spiral galaxy to the top right is PGC 21754. It is about the same distance away as Arp 143.

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Description: Comparison to Arp and Hubble Images

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Arp Catalog (Complete)
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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	5628662
PixInsight job	XJ74U3ILO2TQB33QLYTYD6O0WGNVKPXN
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	07h46m54s.464
RA (top/left)	07h47m51s.272
RA (top/right)	07h45m56s.203
RA (bottom/right)	07h45m57s.764
RA (bottom/left)	07h47m52s.432

Dec (center)	+39°01′16″.22
Dec (top/left)	+39°09′09″.69
Dec (top/right)	+39°08′45″.73
Dec (bottom/right)	+38°53′19″.27
Dec (bottom/left)	+38°53′44″.14

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