|H II region|
|Observation data: J2000 epoch|
|Right ascension||07h 04m 25s|
|Distance||3650 ly (1,120 pc)|
|Designations||GUM 1, IC 2177, Sh2-292|
|See also: 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 H II region centered on the Be star HD 53367. This nebula was discovered by Welsh amateur astronomer Isaac Roberts and was described by him as, "pretty bright, extremely large, irregularly round, very diffuse."
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.
- "The Rich Colours of a Cosmic Seagull". ESO Press Release. Retrieved 27 September 2012.
- "IC 2177 -- HII (ionized) region". SIMBAD. Centre de Données astronomiques de Strasbourg. Retrieved 2012-02-15.
- 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.
- Gregorio-Hetem, J. (December 2008). Bo Reipurth, ed. Handbook of Star Forming Regions. The Southern Sky ASP Monograph Publications 2. Bibcode:2008hsf2.book....1G.
- O'Meara, Stephen James (2007). Hidden treasures. Deep-sky companions. Cambridge University Press. p. 200–201. ISBN 0-521-83704-9.
- Monks, Neale (2010). Go-To Telescopes Under Suburban Skies. Patrick Moore's Practical Astronomy Series. Springer. p. 48. ISBN 1-4419-6850-4.
- Nemiroff, Robert; Bonnell, Jerry (March 27, 2009). "The Seagull Nebula". Astronomy Picture of the Day. NASA. Retrieved 2012-02-15.
- The flight of the Seagull Nebula, February 6, 2013, Thomas Anderson, TG Daily
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