Celestial hemisphere:  Northern  ·  Constellation: Cygnus (Cyg)  ·  Contains:  55 Cyg  ·  56 Cyg  ·  57 Cyg  ·  62 ksi Cyg  ·  B349  ·  B350  ·  B352  ·  B353  ·  B355  ·  B358  ·  IC 5068  ·  IC 5070  ·  NGC 6989  ·  NGC 6996  ·  NGC 6997  ·  NGC 7000  ·  North America Nebula  ·  PK084+01.1  ·  Pelican Nebula  ·  Sh2-117  ·  The star 55Cyg  ·  The star 56Cyg  ·  The star 57Cyg  ·  The star ξCyg
NGC7000 widefield HOO, Sergiy_Vakulenko
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NGC7000 widefield HOO

NGC7000 widefield HOO, Sergiy_Vakulenko
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NGC7000 widefield HOO

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Description

The North America Nebula (NGC 7000 or Caldwell 20) is an emission nebula in the constellation Cygnus, close to Deneb. The remarkable shape of the nebula resembles that of the continent of North America, complete with a prominent Gulf of Mexico.

The portion of the nebula resembling Mexico and Central America is known as the Cygnus Wall. This region exhibits the most concentrated star formation.

The North America Nebula and the nearby Pelican Nebula (IC 5070) are parts of the same interstellar cloud of ionized hydrogen (H II region). Between the Earth and the nebula complex lies a band of interstellar dust that absorbs the light of stars and nebulae behind it, and thereby determines the shape as we see it. The distance of the nebula complex is not precisely known, nor is the star responsible for ionizing the hydrogen so that it emits light. If the star inducing the ionization is Deneb, as some sources say, the nebula complex would be about 1,800 light-years' distance, and its absolute size (6° apparent diameter on the sky) would be 100 light-years.

The Pelican Nebula (also known as IC 5070) 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. The Pelican Nebula is located nearby first magnitude star Deneb, and is divided from its more prominent neighbour, the North America Nebula, by a molecular cloud filled with dark dust.

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. 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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Description: Starless version

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NGC7000 widefield HOO, Sergiy_Vakulenko