NGC 7793

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NGC 7793

NGC 7793 as observed with the Spitzer Space Telescope as part of the Spitzer Infrared Nearby Galaxy Survey. The blue colors represent the 3.6 micrometre emission from stars. The green and red colors represent the 5.8 and 8.0 micrometre emission from polycyclic aromatic hydrocarbons and possibly dust.
Observation data (J2000 epoch)
Constellation Sculptor
Right ascension 23h 57m 49.8s[1]
Declination -32° 35′ 28″[1]
Redshift 227 ± 2 km/s[1]
Distance 12.7 ± 1.3 Mly (3.9 ± 0.4 Mpc)[2][3][4]
Type SA(s)d[1]
Apparent dimensions (V) 9′.3 × 6′.3[1]
Apparent magnitude (V) 10.0[1]
Other designations
PGC 73049[1]
See also: Galaxy, List of galaxies

NGC 7793 is a spiral galaxy about 12.7 million light-years away in the constellation Sculptor. It was discovered in 1826 by James Dunlop.[5]

Contents

[edit] Galaxy group information

NGC 7793 is one of the brightest galaxies within the Sculptor Group, a group of galaxies in the constellation of the same name. The group itself is an elongated, loosely bound group of galaxies with the Sculptor Galaxy (NGC 253) and its companion galaxies forming a tightly-bound core of galaxies near the center.[2]

[edit] See also

  • NGC 300 - a similar spiral galaxy that is near NGC 7793
  • NGC 2403 - a similar spiral galaxy

[edit] External links

[edit] References

  1. ^ a b c d e f g NASA/IPAC Extragalactic Database. Results for NGC 7793. Retrieved on 2006-11-21.
  2. ^ a b I. D. Karachentsev, E. K. Grebel, M. E. Sharina, A. E. Dolphin, D. Geisler, P. Guhathakrta, P. W. Hodge, V. E. Karachentseva, A. Sarajedini, P. Seitzer (2003). "Distances to nearby galaxies in Sculptor". Astronomy and Astrophysics 404: 93–111. doi:10.1051/0004-6361:20030170. 
  3. ^ I. D. Karachentsev, V. E. Karachentseva, W. K. Hutchmeier, D. I. Makarov (2004). "A Catalog of Neighboring Galaxies". Astronomical Journal 127: 2031–2068. doi:10.1086/382905. 
  4. ^ Karachentsev, I. D.; Kashibadze, O. G. (2006). "Masses of the local group and of the M81 group estimated from distortions in the local velocity field". Astrophysics 49 (1): 3–18. doi:10.1007/s10511-006-0002-6. 
  5. ^ James Dunlop, 1828. A Catalogue of Nebulae and Clusters of Stars in the Southern Hemisphere observed in New South Wales. Philosophical Transactions of the Royal Society, Vol. 118, pp. 113-151
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