Which Stars Are Ionizing the Orion Nebula?
Which Stars Are Ionizing the Orion Nebula? is a scholarly work by Gary Ferland and Wolfram Kollatschny, published in 2017 in ''The Astrophysical Journal Letters''. The main subjects of the publication include emission nebula, physics, astronomy, ionization, astrophysics, Orion Nebula, Protoplanetary nebula, formation and evolution of the Solar System, star formation, nebula, Stars, and reflection nebula. Abstract The common assumption that is the dominant ionizing source for the Orion Nebula is critically examined.