Arp 271 (2019) (Gary Imm)

Celestial hemisphere: Southern · Constellation: Virgo (Vir) · Contains: NGC 5426 · NGC 5427

Arp 271 (2019)

This small object is a pair of interacting spiral galaxies located 100 million light years away in the constellation of Virgo. Inclined spiral galaxy NGC 5426 is on the left, and face-on spiral galaxy NGC 5427 is on the right. Both galaxies are about 3 arc-minutes in apparent diameter and are about the same size as our Milky Way, at 100,000 light years in diameter. The galaxies are amazingly similar in their structure.

Unlike some other Arp galaxies, it is obvious that this galaxies are interacting with each other. The interaction is creating numerous star producing areas, visible as blue star clusters and pink Ha regions in the spiral arms of both galaxies. These colors contrast well with the yellowish galaxy cores. NGC 5427 (right) has visible Vorontsov-Velyaminov rows in its arms, another sign of interaction.

My favorite part of the image is the large star stream which connects both galaxies. Interestingly, the Cambridge Galaxy Atlas says that "since the disc planes of the two galaxies are almost perpendicular to each other, no tidal tails extending out of the galactic planes can form despite the close approach". It is always fun to learn something new, and that was new to me.

Many other tiny but colorful faint galaxies are visible throughout the background.

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Status	Advanced success
Started	...
Astrometry.net job	2742553
PixInsight job	M8CR1QFWYCX0YCIFQ43GUWZ6HJ85ZUK4
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	14h03m25s.493
RA (top/left)	14h04m04s.401
RA (top/right)	14h04m10s.778
RA (bottom/right)	14h02m46s.557
RA (bottom/left)	14h02m40s.950

Dec (center)	-06°02′56″.69
Dec (top/left)	-06°17′38″.30
Dec (top/right)	-05°49′27″.50
Dec (bottom/right)	-05°48′16″.80
Dec (bottom/left)	-06°16′27″.40

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Arp 271 (2019)

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