TY - JOUR
T1 - Mass accumulation efficiency in helium shell flashes for various white dwarf masses
AU - Kato, Mariko
AU - Hachisu, Izumi
PY - 2004/10/1
Y1 - 2004/10/1
N2 - We have calculated the mass accumulation efficiency during helium shell flashes on white dwarfs (WDs) of mass 0.7, 0.8, 0.9, 1.0, 1.1, 1.2, 1.3, and 1.35 M⊙ for the helium accretion rates logMHe (M ⊙ yr-1) = -7.4 to -5.8. This efficiency is a crucial factor for binary evolutions of Type Ia supernovae. For less massive WDs (<0.8 M⊙) no wind mass loss occurs, and all the accreted mass accumulates on the WD if the Roche lobe size is large enough. The efficiency takes the minimum values in between 1.1 and 1.2 M⊙ WD for a given mass accretion rate, as well as increases in both less and more massive WDs. The mass accumulation efficiency is larger than 0.5 for log MHe ≥ -6.72 in all the WD masses.
AB - We have calculated the mass accumulation efficiency during helium shell flashes on white dwarfs (WDs) of mass 0.7, 0.8, 0.9, 1.0, 1.1, 1.2, 1.3, and 1.35 M⊙ for the helium accretion rates logMHe (M ⊙ yr-1) = -7.4 to -5.8. This efficiency is a crucial factor for binary evolutions of Type Ia supernovae. For less massive WDs (<0.8 M⊙) no wind mass loss occurs, and all the accreted mass accumulates on the WD if the Roche lobe size is large enough. The efficiency takes the minimum values in between 1.1 and 1.2 M⊙ WD for a given mass accretion rate, as well as increases in both less and more massive WDs. The mass accumulation efficiency is larger than 0.5 for log MHe ≥ -6.72 in all the WD masses.
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U2 - 10.1086/425249
DO - 10.1086/425249
M3 - Article
AN - SCOPUS:7444226228
VL - 613
SP - L129-L132
JO - Astrophysical Journal
JF - Astrophysical Journal
SN - 0004-637X
IS - 2 II
ER -