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Circumstellar Shell Formation in Symbiotic Recurrent Novae
Kevin Moore, Lars Bildsten
We present models of spherically symmetric recurrent nova shells interacting with circumstellar material in a symbiotic system composed of a red giant expelling a wind, and a white…
MESA Models of Classical Nova Outbursts: The Multicycle Evolution and Effects of Convective Boundary Mixing
Pavel A. Denissenkov, Falk Herwig, Lars Bildsten +1
Novae are cataclysmic variables driven by accretion of H-rich material onto a white-dwarf (WD) star from its low-mass main-sequence binary companion. New time-domain observational…
The Observational Signatures of Convectively Excited Internal Gravity Modes in Main Sequence Stars
Joshua H. Shiode, Eliot Quataert, Matteo Cantiello +1
We predict the flux and surface velocity perturbations produced by convectively excited gravity modes (g-modes) in main sequence stars. Core convection in massive stars can excite…
Orbital Evolution of Compact White Dwarf Binaries
David L. Kaplan, Lars Bildsten, Justin D. R. Steinfadt
The new-found prevalence of extremely low mass (ELM, Mhe<0.2 Msun) helium white dwarfs (WDs) in tight binaries with more massive WDs has raised our interest in understanding the na…
PTF11kx: A Type-Ia Supernova with a Symbiotic Nova Progenitor
B. Dilday, D. A. Howell, S. B. Cenko +32
There is a consensus that Type-Ia supernovae (SNe Ia) arise from the thermonuclear explosion of white dwarf stars that accrete matter from a binary companion. However, direct obser…
Laterally Propagating Detonations in Thin Helium Layers on Accreting White Dwarfs
Dean M. Townsley, Kevin Moore, Lars Bildsten
Theoretical work has shown that intermediate mass (0.01Msun<M_He<0.1Msun) Helium shells will unstably ignite on the accreting white dwarf (WD) in an AM CVn binary. For more massive…