Astronomy:NGC 4536

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NGC 4536
NGC 4536 imaged by the Mount Lemmon Skycenter
Observation data (J2000 epoch)
ConstellationVirgo
Right ascension 12h 34m 27.129s[1]
Declination+02° 11′ 16.37″[1]
Redshift0.006031 ± 0.000003[2]
Helio radial velocity1808 ± 1[3] km/s
Distance48.7 ± 0.9 Mly (14.9 ± 0.3 Mpc)[4]
Apparent magnitude (V)11.1[5]
Characteristics
TypeSAB(rs)bc[6]
Size~108,200 ly (33.17 kpc) (estimated)[5]
Apparent size (V)7.6′ × 3.2′[5]
Other designations
UGC 7732, MCG+00-32-023, PGC 41823[5]

NGC 4536 is an intermediate spiral galaxy in the constellation Virgo. It was discovered by German-British astronomer William Herschel on 24 January 1784.[7]

NGC 4536 is located about 10° south of the midpoint of the Virgo Cluster. However, it is not considered a member of the cluster.[6] 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.[8][9][10] 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.[6] It does not have a classical bulge around the nucleus.[11]

NGC 4536 has the optical characteristics of an HII galaxy, which means it is undergoing a strong burst of star formation.[11] This is occurring prominently in the ring that surrounds the bar and nucleus.[12] 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.[11]

One supernova has been observed in NGC 4536: SN 1981B (type Ia, mag. 12.3) was discovered by Dmitry Tsvetkov on 2 March 1981, located 51 arcseconds to the northeast of the Galactic Center.[13][14] It reached a peak visual magnitude of 12 on March 8 before steadily fading from view over the next two months.[6]

See also

References

  1. ↑ 1.0 1.1 Skrutskie, Michael F.; Cutri, Roc M.; Stiening, Rae; Weinberg, Martin D.; Schneider, Stephen E.; Carpenter, John M.; Beichman, Charles A.; Capps, Richard W. et al. (1 February 2006). "The Two Micron All Sky Survey (2MASS)". The Astronomical Journal 131 (2): 1163–1183. doi:10.1086/498708. ISSN 0004-6256. Bibcode: 2006AJ....131.1163S. 
  2. ↑ Grogin, Norman A. et al. (December 1998), "A Complete Redshift Survey to the Zwicky Catalog Limit in a 2h × 15° Region around 3C 273", The Astrophysical Journal Supplement Series 119 (2): 277–285, doi:10.1086/313164, Bibcode: 1998ApJS..119..277G, https://cds.cern.ch/record/359174/files/9807067.pdf. 
  3. ↑ Falco, Emilio E. et al. (April 1999). "The Updated Zwicky Catalog (UZC)". The Publications of the Astronomical Society of the Pacific 111 (758): 438–452. doi:10.1086/316343. Bibcode: 1999PASP..111..438F. 
  4. ↑ Jensen, Joseph B. et al. (February 2003). "Measuring Distances and Probing the Unresolved Stellar Populations of Galaxies Using Infrared Surface Brightness Fluctuations". Astrophysical Journal 583 (2): 712–726. doi:10.1086/345430. Bibcode: 2003ApJ...583..712J. 
  5. ↑ 5.0 5.1 5.2 5.3 "NASA/IPAC Extragalactic Database". Results for NGC 4536. http://nedwww.ipac.caltech.edu/. 
  6. ↑ 6.0 6.1 6.2 6.3 Buta, R. J.; Turner, A. (January 1983), "The photometric properties of the bright Type I supernova 1981b in NGC 4536", Publications of the Astronomical Society of the Pacific 95: 72–78, doi:10.1086/131120, Bibcode: 1983PASP...95...72B. 
  7. ↑ Seligman, Courtney. "New General Catalogue Objects: NGC 4536". https://cseligman.com/text/atlas/ngc45.htm#4536. 
  8. ↑ "The Virgo III Groups". Atlas of the Universe. http://www.atlasoftheuniverse.com/galgrps/viriii.html. 
  9. ↑ Fouqué, P.; Solanes, J. M.; Sanchis, T.; Balkowski, C. (2001-09-01). "Structure, mass and distance of the Virgo cluster from a Tolman-Bondi model" (in en). Astronomy & Astrophysics 375 (3): 770–780. doi:10.1051/0004-6361:20010833. ISSN 0004-6361. Bibcode: 2001A&A...375..770F. 
  10. ↑ "The Virgo II Groups". http://www.atlasoftheuniverse.com/galgrps/virii.html. 
  11. ↑ 11.0 11.1 11.2 McAlpine, W. et al. (February 2011), "Black Holes in Bulgeless Galaxies: An XMM-Newton Investigation of NGC 3367 and NGC 4536", The Astrophysical Journal 728 (1): 25, doi:10.1088/0004-637X/728/1/25, Bibcode: 2011ApJ...728...25M. 
  12. ↑ Davies, Richard I.; Sugai, Hajime; Ward, Martin J. (October 1997), "Molecular hydrogen emission in NGC 4536", Monthly Notices of the Royal Astronomical Society 291 (2): 314–320, doi:10.1093/mnras/291.2.314, Bibcode: 1997MNRAS.291..314D. 
  13. ↑ Aksenov, E. P. (1981). "Supernova in NGC 4536". International Astronomical Union Circular (3580): 1. Bibcode: 1981IAUC.3580....1A. 
  14. ↑ "SN 1981B". IAU. https://www.wis-tns.org/object/1981B. 
  15. ↑ "Starbursts in Virgo". https://www.spacetelescope.org/images/potw1715a/. 



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