Arp 136 (astroeyes)

Celestial hemisphere: Northern · Constellation: Boötes (Boo) · Contains: NGC 5820 · NGC 5821

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Arp 136

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Arp 136

Arp 136 is an S0 type galaxy in Bootes. It is an edge on galaxy and has a blue tidal plume on its eastern edge. It appears surrounded in a faint halo of blue stars as well. Halton Arp classed it under ‘Elliptical and elliptical-like galaxies with nearby fragments’ and Arp's comment on the galaxy is "Faint streamer off one end of E galaxy".

Arp 136 is also known as NGC 5820 and is located about 160 million light-years away based on its redshift.

It is paired with NGC NGC 5821 which has a similar red shift also indicating a distance of about 160 million light-years and the little galaxy just south of NGC 5821 is SDSS J145901.42+535411.1 is the third member of the Arp 136 system as it is a dwarf galaxy also at about 160 million light-years.

The large galaxy southwest of Arp 136 is UGC 09632, a SAd spiral about 150 million light-years distant and a member of Arp 136's group. It's spiral structure is very ill-defined for some reason. The tiny galaxy off of its northwest end is SDSS J145751.63+534755.7 at 1.1 billion light-years. The galaxy just south of UGC 09632 is SDSS J145753.64+534602.5 at 145 million light-years and is probably a member of the group.

The galaxy just above the brilliant double star is PGC 053553. I have identified only 1 quasar in my image, as indicated at mag. 18.5.

The image was taken April 2015 and consists of 55 x 90 sec images summed in Astroart and processed in PixInsight and NEAT.

Thanks for looking.

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	Distinct awarded users	Total awarded images
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	Image of the day	Top pick	Top pick nominations	Total submitted
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	Image of the day	Top pick	Top pick nominations	Total submitted
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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	Basic success
Started	...
Astrometry.net job	3306314
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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