IC 2177

IC 2177
Observation data: J2000 epoch
Type Emission
Right ascension 07h 04m 25s[1]
Declination −10° 27.3′[1]
Distance 3,650 ly (1,120 pc)[2]
Constellation Monoceros
Physical characteristics
Other designations GUM 1, IC 2177, Sh2-292[1]
See also: Diffuse nebula, Lists of nebulae

IC 2177 is a region of nebulosity that lies along the border between the constellations Monoceros and Canis Major. It is a roughly circular HII region centered on the Be star HD 53367.[3] This nebula was discovered by Welsh amateur astronomer Isaac Roberts and was described by him as, "pretty bright, extremely large, irregularly round, very diffuse."[4]

The name Seagull Nebula is sometimes applied by amateur astronomers to this emission region, although it more properly includes the neighboring regions of star clusters, dust clouds and reflection nebulae. This latter region includes the open clusters NGC 2335 and NGC 2343.[5]

References

  1. ^ a b c "IC 2177 -- HII (ionized) region". SIMBAD. Centre de Données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-id?Ident=IC+2177. Retrieved 2012-02-15. 
  2. ^ Ogura, Katsuo (March 2006). "Star formation associated with H II regions". Bulletin of the Astronomical Society of India 34 (2): 111. Bibcode 2006BASI...34..111O. 
  3. ^ Gregorio-Hetem, J. (December 2008). Bo Reipurth. ed. Handbook of Star Forming Regions. The Southern Sky ASP Monograph Publications. 2. Bibcode 2008hsf2.book....1G. 
  4. ^ O'Meara, Stephen James (2007). Hidden treasures. Deep-sky companions. Cambridge University Press. p. 200–201. ISBN 0521837049. 
  5. ^ Monks, Neale (2010). Go-To Telescopes Under Suburban Skies. Patrick Moore's Practical Astronomy Series. Springer. p. 48. ISBN 1441968504. 

External links