NGC 4536
Template:Short description Template:Infobox Galaxy
NGC 4536 is an intermediate spiral galaxy in the constellation Virgo. It was discovered by German-British astronomer William Herschel on 24 January 1784.[1]
NGC 4536 is located about 10° south of the midpoint of the Virgo cluster. However, it is not considered a member of the cluster.[2] Rather, it is a member of the M61 Group of galaxies, which is a member of the Virgo II Groups, a series of galaxies and galaxy clusters strung out from the southern edge of the Virgo Supercluster.[3][4][5] The morphological classification in the De Vaucouleurs system is SAB(rs)bc, which indicates it is a weakly barred spiral galaxy with a hint of an inner ring structure plus moderate to loosely wound arms.[2] It does not have a classical bulge around the nucleus.[6]
NGC 4536 has the optical characteristics of an HII galaxy, which means it is undergoing a strong burst of star formation.[6] This is occurring prominently in the ring that surrounds the bar and nucleus.[7] Based upon the level of X-ray emission from the core, it may have a small supermassive black hole with 104–106 times the mass of the Sun.[6]
One supernova has been observed in NGC 4536: SNScript error: No such module "String".1981B (typeScript error: No such module "String".Ia, mag. 12.3) was discovered by Dmitry Tsvetkov on 2 March 1981, located 51 arcseconds to the northeast of the Galactic Center.[8][9] It reached a peak visual magnitude of 12 on March 8 before steadily fading from view over the next two months.[2]
Gallery
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Detail of a region of extremely rapid star formation in this "starburst galaxy".[10]
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SDSS image of NGC 4536
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NGC 4536 by Spitzer Space Telescope
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NGC 4536 by GALEX (ultraviolet)
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NGC 4536 imaged by the Hubble Space Telescope
![Detail of a region of extremely rapid star formation in this "starburst galaxy".[10]](/wiki143/index.php?title=File:Starbursts_in_Virgo.jpg){kind=link}
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See also
- NGC 6946 - a similar spiral galaxy
- NGC 1365 - A similar-looking galaxy
- List of NGC objects (4001–5000)
References
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External links
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