NGC 7822: Difference between revisions
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NGC 7822 is a young star forming complex in the constellation of [[Cepheus]]. The complex encompasses the emission region designated Sharpless 171, and the young cluster of stars named Berkeley 59. The complex is believed to be some 800-1000 pc distant,<ref name=ma2008>Majaess D., Turner D., Lane D., Moncrieff K. (2008). |
'''NGC 7822''' is a young star forming complex in the constellation of [[Cepheus]]. The complex encompasses the emission region designated '''Sharpless 171''', and the young cluster of stars named '''Berkeley 59'''. The complex is believed to be some 800-1000 pc distant,<ref name=ma2008>Majaess D., Turner D., Lane D., Moncrieff K. (2008). |
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[http://adsabs.harvard.edu/abs/2008JAVSO..36...90M ''The Exciting Star of the Berkeley 59/Cepheus OB4 Complex and Other Chance Variable Star Discoveries''], JAAVSO, vol. 36, no. 1, p. 90</ref><ref name=pa2008>Pandey et al.(2008).[http://adsabs.harvard.edu/abs/2008MNRAS.383.1241P ''Stellar contents and star formation in the young star cluster Be 59''], MNRAS, Volume 383, Issue 3, pp. 1241-1258</ref> with the younger components aged no more than a few million years.<ref name=ma2008/><ref name=pa2008/> The complex also includes one of the |
[http://adsabs.harvard.edu/abs/2008JAVSO..36...90M ''The Exciting Star of the Berkeley 59/Cepheus OB4 Complex and Other Chance Variable Star Discoveries''], JAAVSO, vol. 36, no. 1, p. 90</ref><ref name=pa2008>Pandey et al.(2008).[http://adsabs.harvard.edu/abs/2008MNRAS.383.1241P ''Stellar contents and star formation in the young star cluster Be 59''], MNRAS, Volume 383, Issue 3, pp. 1241-1258</ref> with the younger components aged no more than a few million years.<ref name=ma2008/><ref name=pa2008/> The complex also includes one of the hottest stars discovered within 1 kpc of the Sun, namely [[BD+66 1673]], which is an [[eclipsing binary]] system consisting of an O5V that exhibits a surface temperature of nearly 45000 K and a luminosity ~100000 times that of the Sun.<ref name=ma2008/> The star is one of the primary sources illuminating the nebula and shaping the complex's famed [[pillars of creation]]-type formations, the ''elephant trunks''.<ref name=ma2008/><ref name=ga2006>Gahm G. F., Carlqvist P., Johansson L. E. B., Nikolić S. (2008). |
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[http://cdsads.u-strasbg.fr/abs/2006A%26A...454..201G ''Rotating elephant trunks''], Astronomy and Astrophysics, Volume 454, Issue 1, July IV 2006, pp.201-212</ref><ref name=apod>Fernandez, Antonio (2008). |
[http://cdsads.u-strasbg.fr/abs/2006A%26A...454..201G ''Rotating elephant trunks''], Astronomy and Astrophysics, Volume 454, Issue 1, July IV 2006, pp.201-212</ref><ref name=apod>Fernandez, Antonio (2008). |
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[http://antwrp.gsfc.nasa.gov/apod/ap081018.html ''Sharpless 171''], APOD, October 18th, 2008</ref> |
[http://antwrp.gsfc.nasa.gov/apod/ap081018.html ''Sharpless 171''], APOD, October 18th, 2008</ref> |
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==References== |
==References== |
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{{reflist}} |
{{reflist}} |
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[[Category:Cepehus constellation]] |
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[[Category:NGC objects|7822]] |
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[[Category:Sharpless objects|171]] |
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[[Category:Emission nebulae|Sharpless 171]] |
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[[Category:Open clusters|Berkeley 59]] |
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Revision as of 05:38, 22 October 2009
NGC 7822 is a young star forming complex in the constellation of Cepheus. The complex encompasses the emission region designated Sharpless 171, and the young cluster of stars named Berkeley 59. The complex is believed to be some 800-1000 pc distant,[1][2] with the younger components aged no more than a few million years.[1][2] The complex also includes one of the hottest stars discovered within 1 kpc of the Sun, namely BD+66 1673, which is an eclipsing binary system consisting of an O5V that exhibits a surface temperature of nearly 45000 K and a luminosity ~100000 times that of the Sun.[1] The star is one of the primary sources illuminating the nebula and shaping the complex's famed pillars of creation-type formations, the elephant trunks.[1][3][4]
References
- ^ a b c d Majaess D., Turner D., Lane D., Moncrieff K. (2008). The Exciting Star of the Berkeley 59/Cepheus OB4 Complex and Other Chance Variable Star Discoveries, JAAVSO, vol. 36, no. 1, p. 90
- ^ a b Pandey et al.(2008).Stellar contents and star formation in the young star cluster Be 59, MNRAS, Volume 383, Issue 3, pp. 1241-1258
- ^ Gahm G. F., Carlqvist P., Johansson L. E. B., Nikolić S. (2008). Rotating elephant trunks, Astronomy and Astrophysics, Volume 454, Issue 1, July IV 2006, pp.201-212
- ^ Fernandez, Antonio (2008). Sharpless 171, APOD, October 18th, 2008