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Pelican Nebula

From Wikipedia, the free encyclopedia

Pelican Nebula
Emission nebula
H II region
Pelican Nebula (IC5070 and IC5067)
Observation data: J2000.0 epoch
Right ascension20h 50m 48.0s
Declination+44° 20′ 60.0"
Distance1,800 ly
Apparent magnitude (V)8.0
Apparent dimensions (V)60' x 50'
ConstellationCygnus
DesignationsIC 5070 and IC 5067
See also: Lists of nebulae
Pelican Nebula (IC5070) taken from Leeds UK by amateur astro-photographer urmymuse

The Pelican Nebula (also known as IC 5070 and IC 5067[1]) is an H II region associated with the North America Nebula in the constellation Cygnus. The gaseous contortions of this emission nebula bear a resemblance to a pelican, giving rise to its name.[1] The Pelican Nebula is located nearby first magnitude star Deneb, and is divided from its more prominent neighbour, the North America Nebula, by a foreground molecular cloud filled with dark dust.[2] Both are part of the larger H II region of Westerhout 40.[2]

The Pelican is much studied because it has a particularly active mix of star formation and evolving gas clouds. The light from young energetic stars is slowly transforming cold gas to hot and causing an ionization front gradually to advance outward. Particularly dense filaments of cold gas are seen to still remain, and among these are found two jets emitted from the Herbig–Haro object 555.[1] Millions of years from now this nebula might no longer be known as the Pelican, as the balance and placement of stars and gas will leave something that appears completely different.

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Transcription

References

  1. ^ a b c Nemiroff, Robert; Jerry Bonnell (2011-11-26). "Astronomy Picture of the Day - Pelican Nebula Close-up". Retrieved 26 November 2011. designated IC 5067
  2. ^ a b Froebrich, Dirk; et al. (2021). "A survey for variable young stars with small telescopes – IV. Rotation periods of YSOs in IC 5070". Monthly Notices of the Royal Astronomical Society. 506 (4): 5989–6000. arXiv:2107.08524. doi:10.1093/mnras/stab2082.

External links

Media related to Pelican Nebula at Wikimedia Commons

  1. Pelican Nebula Close-up
  2. North America and the Pelican
  3. Nebulae in the Northern Cross
  4. IC 5067 in the Pelican Nebula
  5. Northern Cygnus


This page was last edited on 6 January 2024, at 03:14
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