Astronomy:Sh 2-228

From HandWiki
Sh 2-228
Nebula
H II region
File:300px
Observation data: J2000 epoch
Right ascension 05h 13m 25.50s[1]
Declination+37° 27′ 1.0″[1]
Distance11,000[2] ly
Apparent dimensions (V)8′ × 8′
ConstellationAuriga
DesignationsSh 2-228, LBN 784, Min 2-58, RAFGL 5137, IRAS 05100+3723, GAL 169.19-00.90[1]
See also: Lists of nebulae

Sh 2-228 (also known as LBN 784) is an emission nebula and H II region located in the constellation of Auriga.[3] It is part of the Sharpless catalog of 313 H II regions compiled by American astronomer Stewart Sharpless.[4]

Sh 2-228 has an asymmetrical shape and is located near the large Auriga OB1 association. It is a region of star formation. Sh 2-228 contains or is associated with the infrared star cluster [IBP2002] CC 01[5] (also known as CC 01), a young open cluster with an estimated mass of about 1800 M☉.[2] The cluster consists of several bright blue stars and a population of fainter stars, with an age of approximately 1–2 million years. Surrounding field stars in the region are older, estimated at 5–6 million years.[2] In the Avedisova Catalogue, the nebula is also associated with some radio wave sources.[6]

Studies based on radio wave emissions have provided for Sh 2-228 a significantly greater distance, around 7,900 parsecs (over 25,000 light-years).[7]

References

  1. ↑ 1.0 1.1 1.2 "Sh 2-228". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=Sh+2-228. 
  2. ↑ 2.0 2.1 2.2 Borissova, J.; Pessev, P.; Ivanov, V. D.; Saviane, I.; Kurtev, R.; Ivanov, G. R. (2003). "Discovery of new Milky Way star cluster candidates in the 2MASS Point Source Catalog. II. Physical properties of the star cluster CC 01". Astronomy & Astrophysics 411 (2): 83–90. doi:10.1051/0004-6361:20034009. ISSN 0004-6361. http://www.aanda.org/10.1051/0004-6361:20034009. 
  3. ↑ "Sh 2-228". http://galaxymap.org/cat/view/sharpless/228. 
  4. ↑ Sharpless, Stewart (1959). "A Catalogue of H II Regions." (in en). The Astrophysical Journal Supplement Series 4: 257. doi:10.1086/190049. ISSN 0067-0049. http://adsabs.harvard.edu/doi/10.1086/190049. 
  5. ↑ "[IBP2002 CC01"]. SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=%5BIBP2002%5D+CC01. 
  6. ↑ Avedisova, V. S. (March 2002). "A Catalog of Star-Forming Regions in the Galaxy". Astronomy Reports 46 (3): 193-205. doi:10.1134/1.1463097. http://adsabs.harvard.edu/abs/2002ARep...46..193A. Retrieved 25 April 2013. 
  7. ↑ Paladini, R.; Burigana, C.; Davies, R. D.; Maino, D.; Bersanelli, M.; Cappellini, B.; Platania, P.; Smoot, G. (January 2003). "A radio catalog of Galactic HII regions for applications from decimeter to millimeter wavelengths". Astronomy and Astrophysics 397: 213-226. doi:10.1051/0004-6361:20021466. http://adsabs.harvard.edu/abs/2003A%26A...397..213P. Retrieved 25 April 2013. 

Bibliography

  • Tirion, Wil; Rappaport, Barry; Lovi, George (1987). Uranometria 2000.0 – Volume I – The Northern Hemisphere to −6°. Richmond, Virginia, USA: Willmann-Bell, Inc.. ISBN 0-943396-14-X. 
  • Tirion, Wil; Sinnott, Roger W. (1998). Sky Atlas 2000.0 – Second Edition. Cambridge, USA: Cambridge University Press. ISBN 0-933346-90-5. 



Retrieved from "https://handwiki.org/wiki/index.php?title=Astronomy:Sh_2-228&oldid=4559324"