Branch, David,Thomas, Rollin Corwin.2013-08-162013-08-162003http://hdl.handle.net/11244/615This dissertation describes some problems associated with synthesizing emergent spectra from three-dimensional supernova envelope models. We confront these problems by developing a three-dimensional implementation of a hybrid Sobolev/Monte Carlo technique. A collection of experiments (extending from the illustrative to the more detailed) are included.xiii, 153 leaves :Stars Spectra.Physics, Astronomy and Astrophysics.Stars Atmospheres.Supernovae Models.Thesis