NGC 2467

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Emission nebula
NGC 2467

NGC 2467 and Surroundings.jpg

Taken with the 2.2-m telescope of ESO at La Silla Observatory
AladinLite
Constellation Aft deck of the ship
Position
equinoxJ2000.0 , epoch : J2000.0
Right ascension 07 h 52 m 23.4 s
declination -26 ° 26 ′ 36 ″
Appearance

Apparent brightness  (visual) 7.1 likes  
Angular expansion 15.0 ' 
Ionizing source
Physical data

Affiliation Milky Way 
distance  4400 ly
(1355 pc )
history

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

Individual evidence

  1. ^ NED
  2. a b SEDS : NGC 2467
  3. WEBDA
  4. Stars and Space . December 2010, p. 14
  5. Seligman