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Could There Be A Hole In Type Ia Supernovae?
Daniel Kasen, Peter Nugent, R. C. Thomas +1
In the favored progenitor scenario, Type Ia supernovae arise from a white dwarf accreting material from a non-degenerate companion star. Soon after the white dwarf explodes, the ej…
Synthetic Spectrum Methods for Three-Dimensional Supernova Models
R. C. Thomas
Current observations stimulate the production of fully three-dimensional explosion models, which in turn motivates three-dimensional spectrum synthesis for supernova atmospheres. W…
Optical Spectra of the Type Ia Supernova 1998aq
D. Branch, P. Garnavich, T. Matheson +6
We present 29 optical spectra of the normal Type Ia SN 1998aq, ranging from 9 days before to 241 days after the time of maximum brightness. This spectroscopic data set, together wi…
On the Geometry of the High-Velocity Ejecta of the Peculiar Type Ia Supernova 2000cx
R. C. Thomas, David Branch, E. Baron +3
High-velocity features in Type Ia supernova spectra provide a way to probe the outer layers of these explosions. The maximum-light spectra of the unique Type Ia supernova 2000cx ex…