NGC3893, and The Miniature Spiral Galaxy NGC 3982 and Their Friends (Randal Healey)

Celestial hemisphere: Northern · Constellation: Ursa Major (UMa) · Contains: NGC 3893 · NGC 3896 · NGC 3906 · NGC 3928 · NGC 3949 · The star χUMa

NGC3893, and The Miniature Spiral Galaxy NGC 3982 and Their Friends, Randal Healey

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NGC3893, and The Miniature Spiral Galaxy NGC 3982 and Their Friends

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NGC3893, and The Miniature Spiral Galaxy NGC 3982 and Their Friends

NGC 3982 is a galaxy that spans about 30,000 light-years, about one-third of the size of our Milky Way galaxy. The galaxy is receding from us at about 1109 km/s. The galaxy is a typical spiral galaxy, similar to our Milky Way. It harbors a supermassive black hole at its core and has massive regions of star formation in the bright blue knots in the spiral arms. Supernovae are likely to be found within these regions.

NGC 3982 has a high rate of star birth within its arms, which are lined by pink star-forming regions of glowing hydrogen and newborn blue star clusters. Its bright nucleus is home to older populations of stars, which grow more densely packed toward the center. The galaxy also has active star formation in the circumnuclear region.

NGC 3982 is a member of the M109 Group, a group of galaxies located in the constellation Ursa Major that may contain over 50 galaxies. The group was named after the brightest galaxy in the group, the spiral galaxy M109.

Astronomers are interested in studying this galaxy as it can help in measuring extragalactic distances. It is helpful because it possesses two tools used to estimate astronomical distances: a stellar explosion, or supernova; and Cepheid variable stars.

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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.

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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.
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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.

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NGC3893, and The Miniature Spiral Galaxy NGC 3982 and Their Friends

NGC3893, and The Miniature Spiral Galaxy NGC 3982 and Their Friends

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NGC3893, and The Miniature Spiral Galaxy NGC 3982 and Their Friends

NGC3893, and The Miniature Spiral Galaxy NGC 3982 and Their Friends

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