Spectra of Type Ia Supernovae from Double Degenerate Mergers
Abstract
The merger of two white dwarfs (a.k.a. double degenerate merger) has often been cited as a potential progenitor of type Ia supernovae. Here we combine population synthesis, merger and explosion models with radiation-hydrodynamics light-curve models to study the implications of such a progenitor scenario on the observed type Ia supernova population. Our standard model, assuming double degenerate mergers do produce thermonuclear explosions, produces supernova light-curves that are broader than the observed type Ia sample. In addition, we discuss how the shock breakout and spectral features of these double degenerate progenitors will differ from the canonical bare Chandrasekhar-massed explosion models. We conclude with a discussion of how one might reconcile these differences with current observations.
Keywords
Cite
@article{arxiv.1007.0570,
title = {Spectra of Type Ia Supernovae from Double Degenerate Mergers},
author = {Chris L. Fryer and Ashley J. Ruiter and Krzysztof Belczynski and Peter J. Brown and Filomena Bufano and Steven Diehl and Christopher J. Fontes and Lucille H. Frey and Stephen T. Holland and Aimee L. Hungerford and Stefan Immler and Paolo Mazzali and Casey Meakin and Peter A. Milne and Cody Raskin and Francis X. Timmes},
journal= {arXiv preprint arXiv:1007.0570},
year = {2015}
}
Comments
29 pages, 12 figures, comments welcome