Wolf–Rayet nebula

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Hen 3-1333 has in its core Wolf–Rayet type stars.[1]

A Wolf–Rayet nebula is a nebula which surrounds a Wolf–Rayet star.[2] A subtype of a WR-nebula is the Pinwheel nebula.

There are different types of WR-nebula, based on their formation mechanism:

  • HII regions
  • ejecta-type nebulae
  • wind-blown bubbles
  • neutral hydrogen voids and shells (may be associated with ionized gas)

Examples of this type of nebula include NGC 6888, NGC 2359, and NGC 3199.