NGC 5962
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NGC 5962 is a spiral galaxy in the equatorial constellation of Serpens Caput. It was discovered by the Anglo-German astronomer William Herschel on March 21, 1784.[1] The NGC 5962 galaxy is located at a distance of 120 million light years and is receding with a heliocentric radial velocity of Script error: No such module "val"..[2] It is the brightest member of the eponymously-named NGC 5962 group, which overlaps with the nearby NGC 5970 group; the two groups may be gravitationally bound.[3]
The morphological (shape) class of NGC 5962 in the infrared is SAB(rs,nrl)c. This notation indicates the galaxy has a bar structure around the nucleus (SAB), an inner pseudo-ring likely associated with the outer Lindblad resonance (rs), a ring-lens structure at the nucleus (nrl), and loosely-wound spiral arms (c).[4] In the optical band, this galaxy is classed as Hubble type SA(r)c,[5] displaying an inner ring with no visible bar. The galactic plane is inclined at an angle of Script error: No such module "val". to the line of sight from the Earth, giving it an oval profile with the major axis aligned along a position angle of Script error: No such module "val"..[6]
Along with a populated nucleus, it has a relatively large core, but a small central bulge, in which the spiral arms begin to unfurl. There is some evidence for a low level of nuclear activity, and it has been classed as a nuclear H II region galaxy.[5] Based on its emission of far ultraviolet radiation, the pseudo-ring structure is actively undergoing star formation.[7] The galaxy is forming stars at the rate of Script error: No such module "val".·yr−1.[8] There are two confirmed satellite galaxies; a third candidate proved to be too distant based on its redshift value.[9]
Two supernovae have been detected in this galaxy: SN 2016afa (type II, mag. 17.1)[10] was discovered February 12, 2016, and SN 2017ivu (type IIP, mag. 15.4)[11] was spotted December 11, 2017.[12]
References
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- ↑ Transient Name Server entry for SN 2016afa. Retrieved 24 March 2023.
- ↑ Transient Name Server entry for SN 2017ivu. Retrieved 24 March 2023.
- ↑ Script error: No such module "Citation/CS1".
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