NGC 2467
Emission nebula | |
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NGC 2467
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Taken with the 2.2-m telescope of ESO at La Silla Observatory | |
AladinLite | |
Constellation | Aft deck of the ship |
Position equinox : J2000.0 , epoch : J2000.0 |
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Right ascension | 07 h 52 m 23.4 s |
declination | -26 ° 26 ′ 36 ″ |
Appearance
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Apparent brightness (visual) | 7.1 likes |
Angular expansion | 15.0 ' |
Ionizing source | |
Physical data
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Affiliation | Milky Way |
distance | 4400 ly (1355 pc ) |
history
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discovery | William Herschel |
Date of discovery | December 9, 1784 |
Catalog names | |
NGC 2467 • OCL 668 • ESO 493-SC25 • LBN 1065 • Cr 164 • H IV 22 • GC 1589 |
NGC 2467 is a still young open star cluster in the southern constellation Puppis (aft). It has an angular extent of 15.0 ′ and an apparent magnitude of 7.1 mag. The star cluster is about 4,500 light years from the solar system.
The star cluster is still in a cocoon of gas and dust in which its stars were formed . These massive stars are so hot that they mainly emit ultraviolet and short-wave blue light. The high-energy radiation excites the surrounding hydrogen to glow, with the reddish H-alpha radiation, which can be seen in the picture above. For this reason, such gas clouds are also called H-alpha or emission nebulae .
The object was discovered by William Herschel on December 9, 1784 .
Web links
- The Cosmic Christmas Ghost. eso0544 - Picture released December 25, 2005
- Young stars in NGC 2467. Spektrum.de , July 14, 2010
- Image of the day. astronews.com, April 19, 2013
- Image of the day. astronews.com, August 20, 2013
- A ghost in the southern sky. eso1834 - Picture released, October 17, 2018