NGC 55

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NGC 55

NGC 55 as observed at ultraviolet wavelengths by the Galaxy Evolution Explorer (GALEX).
Credit: NASA/JPL/GALEX.
Observation data (J2000 epoch)
Constellation Sculptor[1]
Right ascension 00h 14m 53.6s[2]
Declination -39° 11′ 48″[2]
Redshift 129 ± 2 km/s[2]
Distance 7.2 ± 0.7 Mly
(2.21 ± 0.21 Mpc)[3]

[4]

[a]
Type SB(s)m[2]
Apparent dimensions (V) 32'.4 × 5'.6[2]
Apparent magnitude (V) 8.8[2]
Other designations
PGC 1014[2]
See also: Galaxy, List of galaxies

NGC 55 is a barred irregular galaxy located about 7 million light-years away in the constellation Sculptor.

Contents

[edit] Nearby galaxies and group information

NGC 55 and the spiral galaxy NGC 300 have traditionally been identified as members of the Sculptor Group, a nearby group of galaxies in the constellation of the same name. However, recent distance measurements indicate that the two galaxies actually lie in the foreground.[5]

It is likely that NGC 55 and NGC 300 form a gravitationally bound pair.[4]

[edit] See also

  • NGC 4236 - a similar edge-on spiral galaxy
  • NGC 4631 - a similar edge-on spiral galaxy

[edit] External links

[edit] Notes

  1. ^ average(6.9 ± 0.7,[3] 7.5 ± 1.1[4]) = ((6.9 + 7.5) / 2) ± ((0.72 + 1.12)0.5 / 2) = 7.2 ± 0.7

[edit] References

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  1. ^ R. W. Sinnott, editor (1988). The Complete New General Catalogue and Index Catalogue of Nebulae and Star Clusters by J. L. E. Dreyer. Sky Publishing Corporation and Cambridge University Press. ISBN 0-933-34651-4. 
  2. ^ a b c d e f g NASA/IPAC Extragalactic Database. Results for NGC 55. Retrieved on 2006-10-17.
  3. ^ a b 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. 
  4. ^ a b c van de Steene, G. C.; Jacoby, G. H.; Praet, C.; Ciardullo, R. & Dejonghe, H. (September 2006), “Distance determination to NGC 55 from the planetary nebula luminosity function”, Astronomy and Astrophysics 455 (3): 891-896, <http://adsabs.harvard.edu/abs/2006A%26A...455..891V> 
  5. ^ 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. 
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