NGC 362 (Caldwell 104) is a globular cluster located in the constellation Tucana in the Southern Hemisphere, slightly north of the Small Magellanic Cloud. It was discovered on August 1, 1826 by James Dunlop.[5] It is visible to the naked eye in dark skies, and is an impressive sight in a telescope, although it is somewhat overshadowed by its larger and brighter neighbour 47 Tucanae.[6]

NGC 362
GALEX image of NGC 362.jpg
False-color image of NGC 362 by GALEX;
Credit: NASA/JPL/Caltech/University of Virginia/R. Schiavon (Univ. of Virginia)
Observation data
ClassIII[1]
ConstellationTucana
Right ascension 01h 03m 14.26s[2]
Declination−70° 50′ 55.6″[2]
Distance27.7 kly (8.5 kpc)[3]
Apparent magnitude (V)6.4
Apparent dimensions (V)12.9′
Physical characteristics
Metallicity = –1.09[4] dex
Estimated age10.37 Gyr[4]
See also: Globular cluster, List of globular clusters
Image of NGC 362 by Hubble Space Telescope

The stars of NGC 362 have an average metallicity higher than the stars in most globulars. This implies that NGC 362 is a relatively young globular cluster.[6] It also has an overabundance of binary stars, and an exceptionally tight core 13 light-years in diameter.[6] The orbit of NGC 362 is highly eccentric, taking it to within 3,260 light-years of the galactic center.[6]

See alsoEdit

ReferencesEdit

  1. ^ Shapley, Harlow; Sawyer, Helen B. (August 1927), "A Classification of Globular Clusters", Harvard College Observatory Bulletin, 849 (849): 11–14, Bibcode:1927BHarO.849...11S.
  2. ^ a b Goldsbury, Ryan; et al. (December 2010), "The ACS Survey of Galactic Globular Clusters. X. New Determinations of Centers for 65 Clusters", The Astronomical Journal, 140 (6): 1830–1837, arXiv:1008.2755, Bibcode:2010AJ....140.1830G, doi:10.1088/0004-6256/140/6/1830.
  3. ^ Paust, Nathaniel E. Q.; et al. (February 2010), "The ACS Survey of Galactic Globular Clusters. VIII. Effects of Environment on Globular Cluster Global Mass Functions", The Astronomical Journal, 139 (2): 476–491, Bibcode:2010AJ....139..476P, doi:10.1088/0004-6256/139/2/476.
  4. ^ a b Forbes, Duncan A.; Bridges, Terry (May 2010), "Accreted versus in situ Milky Way globular clusters", Monthly Notices of the Royal Astronomical Society, 404 (3): 1203–1214, arXiv:1001.4289, Bibcode:2010MNRAS.404.1203F, doi:10.1111/j.1365-2966.2010.16373.x.
  5. ^ "NGC 362". SEDS. Retrieved 28 June 2015.
  6. ^ a b c d O'Meara, Stephen James (2003). Deep Sky Companions: The Caldwell Objects. Cambridge University Press. pp. 409–412. ISBN 9780521827966.

External linksEdit