NGC 5364

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NGC 5364
NGC 5364
NGC 5364 imaged with the 24-inch telescope at Mount Lemmon Observatory
Observation data (J2000 epoch)
Constellation Virgo
Right ascension 13h 56m 12.004s[1]
Declination +05° 00′ 52.06″[1]
Redshift 1241 ± 4 km/s[2]
Distance 54.5 ± 3.9 Mly (16.7 ± 1.2 Mpc)[2]
Type SA(rs)bc pec[3]
Apparent dimensions (V) 6′.1 × 6′.8[4]
Apparent magnitude (V) 11.2[5]
Other designations
UGC 8853, PGC 49555, ZWG 46.9, IRAS13536+0515[6]
See also: Galaxy, List of galaxies

NGC 5364 is a grand design spiral galaxy located 54.5[2] million light years away in the constellation Virgo. It is inclined to the line of sight from the Earth at an angle of 47° along a position angle of 25°.[7] The morphological classification of NGC 4698 in the De Vaucouleurs system is SA(rs)bc pec,[3] which indicates it has an incomplete ring structure (rs) in the inner part of the galaxy with moderate to loosely wound arms (bc) and has a peculiar aspect (pec).[4] In particular, the appearance of the spiral arms is amorphous and asymmetrical compared to other galaxies with a similar classification.[3] A companion galaxy, NGC 5363, is located to the north of NGC 5364 and their gravitational interaction may be influencing the peculiar morphology of the latter.[2]

The mid-infrared emission in the nucleus appears weak compared to the spiral arms, suggesting a low rate of star formation in the core region.[3] The inner ring of this galaxy spans a diameter of 22 kly (6.7 kpc) and is located slightly off center with the northern side showing a stronger emission in the hydrogen alpha band compared to the southern half. Multiple H II regions lie along the spiral arms, tracing out their extent.[2] Each of the two main arms wrap all the way around the galaxy, although they display patchiness along much of their length.[4]

References[edit]

  1. ^ a b Skrutskie, M. F. et al. (February 2006), The Two Micron All Sky Survey (2MASS), Astrophysical Journal 131 (2): 1163–1183, Bibcode:2006AJ....131.1163S, doi:10.1086/498708. 
  2. ^ a b c d e Grouchy, R. D. et al. (June 2010), Ring Star Formation Rates in Barred and Nonbarred Galaxies, The Astronomical Journal 139 (6): 2465–2493, arXiv:1004.5063, Bibcode:2010AJ....139.2465G, doi:10.1088/0004-6256/139/6/2465. 
  3. ^ a b c d Bendo, George J. et al. (June 2002), An Infrared Space Observatory Atlas of Bright Spiral Galaxies, The Astronomical Journal 123 (6): 3067–3107, Bibcode:2002AJ....123.3067B, doi:10.1086/340083. 
  4. ^ a b c Buta, Ronald J. et al. (2007), Atlas of Galaxies, Cambridge University Press, pp. 13–17, 216, ISBN 0521820480. 
  5. ^ "NASA/IPAC Extragalactic Database". Results for NGC 5364. Retrieved 2007-04-06. 
  6. ^ Revised NGC Data for NGC 5317
  7. ^ Kennicutt, R. C., Jr. (December 1981), The shapes of spiral arms along the Hubble sequence, The Astronomical Journal 86: 1847–1858, Bibcode:1981AJ.....86.1847K, doi:10.1086/113064. 

External links[edit]

Coordinates: Sky map 13h 56m 12s, +05° 00′ 52″