Mass accumulation efficiency in helium shell flashes for various white dwarf masses

Mariko Kato, Izumi Hachisu

Research output: Contribution to journalArticle

87 Citations (Scopus)

Abstract

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.

Original languageEnglish
JournalAstrophysical Journal
Volume613
Issue number2 II
DOIs
Publication statusPublished - 2004 Oct 1

Fingerprint

helium
flash
shell
accretion
lobes
supernovae

ASJC Scopus subject areas

  • Space and Planetary Science

Cite this

Mass accumulation efficiency in helium shell flashes for various white dwarf masses. / Kato, Mariko; Hachisu, Izumi.

In: Astrophysical Journal, Vol. 613, No. 2 II, 01.10.2004.

Research output: Contribution to journalArticle

@article{7ca42ced6d01402d993db75459f81928,
title = "Mass accumulation efficiency in helium shell flashes for various white dwarf masses",
abstract = "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.",
author = "Mariko Kato and Izumi Hachisu",
year = "2004",
month = "10",
day = "1",
doi = "10.1086/425249",
language = "English",
volume = "613",
journal = "Astrophysical Journal",
issn = "0004-637X",
publisher = "IOP Publishing Ltd.",
number = "2 II",

}

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.

UR - http://www.scopus.com/inward/record.url?scp=7444226228&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=7444226228&partnerID=8YFLogxK

U2 - 10.1086/425249

DO - 10.1086/425249

M3 - Article

VL - 613

JO - Astrophysical Journal

JF - Astrophysical Journal

SN - 0004-637X

IS - 2 II

ER -