Celestial hemisphere:  Northern  ·  Constellation: Monoceros (Mon)  ·  Contains:  12 Mon  ·  NGC 2237  ·  NGC 2238  ·  NGC 2239  ·  NGC 2244  ·  NGC 2246  ·  NGC 2252  ·  Rosette A  ·  Rosette B  ·  Rosette Nebula  ·  Sh2-275  ·  The star 12Mon
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Rosette Nebula, Sasho Panov
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Rosette Nebula

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Rosette Nebula, Sasho Panov
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Rosette Nebula

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Description

The Rosette Nebula (also known as NGC 2237, sh2-275 or Caldwell 49) is a giant emission nebula in the constellation Monoceros at a distance of about 5200light years. It is approximately 130 light years in diameter, significantly larger than the famous Orion Nebula (M42) which is much closer to the Earth. It is a region of intense star formation. The open star cluster NGC 2244 is located in the central region of the Rosette Nebula and contains few extremely hot blue stars, including a rare class of super hot blue main sequence stars of the spectral class O4. The X-ray radiation emitted by the stars results in a super-hot plasma with temperatures ranging from 1 to 10 million K, that is much hotter than the 10,000 K plasmas seen in majority of other HII regions. The central hole in the nebula is a result of the shock-heated winds and the radiation blasting away the gas.

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  • Rosette Nebula, Sasho Panov
    Original
  • Rosette Nebula, Sasho Panov
    B
  • Final
    Rosette Nebula, Sasho Panov
    C

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Rosette Nebula, Sasho Panov