2016MNRAS.456.1320T

Query : 2016MNRAS.456.1320T

2016MNRAS.456.1320T - Mon. Not. R. Astron. Soc., 456, 1320-1331 (2016/February-3)

Exact and approximate expressions of energy generation rates and their impact on the explosion properties of pair instability supernovae.

TAKAHASHI K., YOSHIDA T., UMEDA H., SUMIYOSHI K. and YAMADA S.

Abstract (from CDS):

Energetics of nuclear reaction is fundamentally important to understand the mechanism of pair instability supernovae (PISNe). Based on the hydrodynamic equations and thermodynamic relations, we derive exact expressions for energy conservation suitable to be solved in simulation. We also show that some formulae commonly used in the literature are obtained as approximations of the exact expressions. We simulate the evolution of very massive stars of ∼ 100-320 M☉ with zero- and 1/10 Z☉, and calculate further explosions as PISNe, applying each of the exact and approximate formulae. The calculations demonstrate that the explosion properties of PISN, such as the mass range, the 56Ni yield, and the explosion energy, are significantly affected by applying the different energy generation rates. We discuss how these results affect the estimate of the PISN detection rate, which depends on the theoretical predictions of such explosion properties.

Abstract Copyright: © 2015 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2015)

Journal keyword(s): stars: evolution - methods: numerical - supernovae: general

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 2007bi SN* 13 19 20.19 +08 55 44.3       18.3   SLSN-I 228 1

Query : 2016MNRAS.456.1320T

Basic data :
SN 2007bi -- SuperNova
Other object types: otypes_help 		SN* (2012A&A,SN)
ICRS coord. (ep=J2000) : 		13 19 20.19 +08 55 44.3 (Optical) [ ] D 2007IAUC.8834....1M
FK4 coord. (ep=B1950 eq=1950) : 		13 16 49.99 +09 11 28.9 [ ]
Gal coord. (ep=J2000) : 		324.14956 +70.64269 [ ]
Radial velocity / Redshift / cz : 		V(km/s) 35909 [~] / z(~) 0.1279 [~] / cz 38343 [~]
   D 2009Natur.462..624G
Spectral type: 		SLSN-I C 2020ApJ...904...74G
Fluxes (1) :
R 18.3 [~] D 2008yCat.2283....0B
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SN 2007bi

References (228 between 1850 and 2026) (Total 228)
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