NGC 3221 & Companions (Gary Imm)

Celestial hemisphere: Northern · Constellation: Leo (Leo) · Contains: NGC 3221 · PGC 1649904 · PGC 1651518 · PGC 213687 · PGC 213688 · PGC 30366

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NGC 3221 & Companions

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NGC 3221 & Companions

This object is an obscure edge-on spiral galaxy located 180 million light years away in the constellation of Leo at a declination of +22 degrees. This 12.7 magnitude galaxy spans almost 3 arc-minutes in our apparent view, which corresponds to an actual diameter of 150,000 light years. The galaxy disk looks disturbed and I like the asymmetric dust lane just to the right of the core.

This is not a popular galaxy. So why did I image it? A 2018 paper ("Tidal streams around galaxies in the SDSS DR7 archive" by Miskolczi, Bomans, and Dettmar) uses this galaxy as an example of faint tidal star streams, which I love to examine.

The companion galaxies to NGC 3221 visible in this image are LEDA 213687 (50,000 light year diameter) to the upper right, LEDA 213688 (30,000 ly diameter) to the upper left, and LEDA 30366 (30,000 ly diameter) to the left. According to their redshift values, the 3 small galaxies and NGC 3221 are all the same distance away from us.

Looking closely, especially in the inverted Astrobin view, you can see faint star streams connecting these companion galaxies to NGC 3221. But the streams are very faint and it is hard to see their complete extent. I hope to add to the integration time in the future in order to enhance the view of these interesting star streams.

Cloudy Nights
Unique or Unusal Deep Sky Targets
Schmidt-Cassegrain Telescope (SCT) Imagers
Texas Astronomy
Images from the EdgeHD Series
ZWO ASI1600MM/QHY163M

Astrobin Debuts (670 DSOs)
Edge-on Galaxies
Edge-on Galaxy Dust Band

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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.

Submitted The date and time when you submitted this image for IOTD/TP consideration.	...
Views by Submitters (available since September 19th, 2023) Every image is assigned to 50% of available Submitters. In the event that at least 80% of them don't view the image before its time in the IOTD/TP process expires, it's assigned to the other 50% of Submitters and the process begins anew.
Promotions by Submitters When 3 distinct Submitters promote the image, it moves on to the next stage of the process: evaluation for Top Pick status. This requirement, in addition to anonymization of images and distribution to only a subset of them, prevents biases and ensures that the best images are selected.
Promotions by Reviewers When 3 distinct Reviewers promote the image, it moves on to the next stage of the process: evaluation for IOTD status.
Early dismissal Staff members have a lot of images to inspect on a daily basis, and they can dismiss images if they believe they don't meet the requirements for IOTD/TP selection. If an image is dismissed 5 times, it's removed from the process. This streamlines the process and ensures that any bias present in promotions could be overruled by other staff members.

Status	Advanced success
Started	...
Astrometry.net job	3348126
PixInsight job	1CC7ZAXFW9LF71F7FDVCDICM4CLV1RRQ
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	10h22m20s.360
RA (top/left)	10h22m56s.146
RA (top/right)	10h22m40s.220
RA (bottom/right)	10h21m43s.842
RA (bottom/left)	10h21m59s.999

Dec (center)	+21°34′03″.42
Dec (top/left)	+21°26′42″.80
Dec (top/right)	+21°44′11″.71
Dec (bottom/right)	+21°41′24″.69
Dec (bottom/left)	+21°23′55″.58

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NGC 3221 & Companions

NGC 3221 & Companions

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NGC 3221 & Companions

NGC 3221 & Companions

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