Proplyd

Proplyds in the Orion Nebula

A proplyd, short for ionized protoplanetary disk, is an externally illuminated photoevaporating protoplanetary disk around a young star. Nearly 180 proplyds have been discovered in the Orion Nebula.[1] Images of proplyds in other star-forming regions are rare, while Orion is the only region with a large known sample due to its relative proximity to Earth.[2]

  1. ^ Cite error: The named reference ricci08 was invoked but never defined (see the help page).
  2. ^ Cite error: The named reference esa09 was invoked but never defined (see the help page).