Bode's Galaxy (M81) and The Cigar Galaxy (M82) (JohnEEvans)

Celestial hemisphere: Northern · Constellation: Ursa Major (UMa) · Contains: Bode's Galaxy · Cigar Galaxy · M 81 · M 82 · NGC 3031 · NGC 3034

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Bode's Galaxy (M81) and The Cigar Galaxy (M82)

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Bode's Galaxy (M81) and The Cigar Galaxy (M82)

Bode's Galaxy (M81) named after its discoverer, is located about 12 million light-years from Earth in the constellation Ursa Major. The nearby Cigar Galaxy (M82) is the nearest starburst galaxy to us.

Bode's Galaxy’s spiral arms are made up of young, bluish, hot stars formed in the past few million years. A number of dust lanes also can be seen making their way into the centre of the galaxy.Bode's Galaxy’s central bulge contains much older, redder stars. It is significantly larger than the Milky Way’s bulge. There is a black hole of 70 million solar masses at the centre of M81 and is about 15 times the mass of the Milky Way’s central black hole.

The Cigar Galaxy is very bright. It is believed to be 5 times brighter than our Milky Way. The interaction between the Cigar Galaxy and Bode's Galaxy is believed to have caused exceptionally high rates of star formation in the Cigar Galaxy, giving rise to the starburst activity. The rate of star formation is 10x that in normal galaxies like the Milky Way.

In 2010, Jodrell Bank detected some unusual radio activity slightly away from the core of the Cigar Galaxy. It is still unclear what is producing the source of radio waves but whatever it is appears to be moving very fast with respect to the galaxy core; is has an apparent (superluminal) speed of 4 times the speed of light.

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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
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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
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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	Basic success
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Astrometry.net job	5449843
PixInsight job	n/a
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Bode's Galaxy (M81) and The Cigar Galaxy (M82)

Bode's Galaxy (M81) and The Cigar Galaxy (M82)

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Image Index:

Contribution Index (beta):

Bode's Galaxy (M81) and The Cigar Galaxy (M82)

Bode's Galaxy (M81) and The Cigar Galaxy (M82)

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