Celestial hemisphere:  Northern  ·  Constellation: Leo (Leo)  ·  Contains:  NGC 3185  ·  NGC 3187  ·  NGC 3189  ·  NGC 3190  ·  NGC 3193  ·  PGC 1652657  ·  PGC 1654235  ·  PGC 1657031  ·  PGC 1659211  ·  PGC 1664603  ·  PGC 2806871  ·  PGC 30008  ·  PGC 86788
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Hickson 44 Compact Galaxy Group,  Arp 316, Mau_Bard
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Hickson 44 Compact Galaxy Group, Arp 316

Revision title: V2

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Hickson 44 Compact Galaxy Group,  Arp 316, Mau_Bard
Powered byPixInsight

Hickson 44 Compact Galaxy Group, Arp 316

Revision title: V2

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Description

The Canadian astronomer Paul Hickson and has identified a hundred compact groups of galaxies, that are very nice objects to be observed in the sky.

The one portrayed here is Hickson 44 in Leo, about 80-110 Mly distant, according to 2019 distance measurements, reported in Simbad DB.

The two spiral galaxies in the center of the image are edge-on NGC 3190 with its distinctive, warped dust lanes, and S-shaped NGC 3187. Along with the bright elliptical, NGC 3193 at the bottom right, they are also known as Arp 316.
The spiral on the upper left side is NGC 3185, the 4th member of the Hickson group.

Like other galaxies in Hickson groups, these show signs of distortion and enhanced star formation, evidence of a gravitational tug of war that will eventually result in galaxy mergers on a cosmic timescale.

NGC 3190 is about 75,000 light-years across.

The sky background of this field is impressive, as it is punctuated by a multitude of galaxyes that are several hundred million light years away, and here are visible as little blurred dots.

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