M82 The Cigar galaxy (Mathieu Guinot)

Celestial hemisphere: Northern · Constellation: Ursa Major (UMa) · Contains: Cigar Galaxy · M 82 · NGC 3034

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M82 The Cigar galaxy

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M82 The Cigar galaxy

The famous Messier 82 (also known as NGC 3034, Cigar Galaxy or M82) is a starburst galaxy approximately 12 million light-years away in the constellation Ursa Major.
M82 is the prototypical example of this galaxy type and this starburst activity is thought to have been triggered by interaction with neighboring galaxy M81 (tidal forces caused by gravity have deformed M82, a process that started about 100 million years ago. This interaction has caused star formation to increase tenfold compared to "normal" galaxies).

Starburst galaxies are defined by these three interrelated factors:
- The rate at which the galaxy is currently converting gas into stars (the star-formation rate, or SFR).
-The available quantity of gas from which stars can be formed.
- A comparison of the timescale on which star formation will consume the available gas with the age or rotation period of the galaxy

In the core of M82, four high surface brightness regions or clumps (designated A, C, D, and E) are detectable at visible wavelengths. M82's unique bipolar outflow appears to be concentrated on clumps A and C, and is fueled by energy released by supernovae within the clumps which occur at a rate of about one every ten years.

Backyard

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Distribution of astrophotographers

This table shows the number of distinct astrophotographers who have been assigned and IOTD/TP award compared to the total number of images awarded.
	Distinct awarded users	Total awarded images
Image of the day
Top picks
Top pick nominations

Distribution of subject types

This table shows the distribution of awards per subject type, compared to the popularity of images of that subject type.
	Image of the day	Top pick	Top pick nominations	Total submitted
Deep sky
Solar system
Extremely wide field
Star trails
Northern lights
Noctilucent clouds
Landscape

Distribution of data sources

This table shows the distribution of awards per data source, compared to the popularity of images acquired from that data source.
	Image of the day	Top pick	Top pick nominations	Total submitted
Backyard
Traveller
Own remote observatory
Amateur hosting facility
Public amaeteur data
Professional, scientific grade data
Mix of multiple sources
Other
Unknown

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	5655961
PixInsight job	8TOZB8GX9LCOY4FQPQ69DCJTK3FQDWO6
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	09h55m46s.316
RA (top/left)	09h59m24s.552
RA (top/right)	09h52m09s.310
RA (bottom/right)	09h52m14s.299
RA (bottom/left)	09h59m17s.399

Dec (center)	+69°40′38″.97
Dec (top/left)	+69°59′06″.60
Dec (top/right)	+69°59′11″.35
Dec (bottom/right)	+69°21′55″.26
Dec (bottom/left)	+69°21′49″.41

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M82 The Cigar galaxy

M82 The Cigar galaxy

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M82 The Cigar galaxy

M82 The Cigar galaxy

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