2016ApJ...827...84J

Query : 2016ApJ...827...84J

2016ApJ...827...84J - Astrophys. J., 827, 84-84 (2016/August-2)

Low mach number modeling of convection in helium shells on sub-Chandrasekhar wHIte dwarfs. II. Bulk properties of simple models.

JACOBS A.M., ZINGALE M., NONAKA A., ALMGREN A.S. and BELL J.B.

Abstract (from CDS):

The dynamics of helium shell convection driven by nuclear burning establish the conditions for runaway in the sub-Chandrasekhar-mass, double-detonation model for SNe Ia, as well as for a variety of other explosive phenomena. We explore these convection dynamics for a range of white dwarf core and helium shell masses in three dimensions using the low Mach number hydrodynamics code MAESTRO. We present calculations of the bulk properties of this evolution, including time-series evolution of global diagnostics, lateral averages of the 3D state, and the global 3D state. We find a variety of outcomes, including quasi-equilibrium, localized runaway, and convective runaway. Our results suggest that the double-detonation progenitor model is promising and that 3D dynamic convection plays a key role.

Abstract Copyright: © 2016. The American Astronomical Society. All rights reserved.

Journal keyword(s): convection - hydrodynamics - methods: numerical - nuclear reactions, nucleosynthesis, abundances - supernovae: general - white dwarfs - white dwarfs

Simbad objects: 1

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Number of rows : 1
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 SN 2005ek SN* 03 05 48.96 +36 46 10.6     17.5     SNIc: 76 1

Query : 2016ApJ...827...84J

Basic data :
SN 2005ek -- SuperNova
Other object types: otypes_help 		SN* (2012A&A,SN)
ICRS coord. (ep=J2000) : 		03 05 48.96 +36 46 10.6 [ ] D 2005IAUC.8604....1B
FK4 coord. (ep=B1950 eq=1950) : 		03 02 39.39 +36 34 35.3 [ ]
Gal coord. (ep=J2000) : 		150.83513 -18.71711 [ ]
Spectral type: 		SNIc: D 2008yCat....1.2024B
Fluxes (1) :
V 17.5 [~] D 2008yCat.2283....0B
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SN 2005ek

References (76 between 1850 and 2026) (Total 76)
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