2004A&A...413..257G


Query : 2004A&A...413..257G

2004A&A...413..257G - Astronomy and Astrophysics, volume 413, 257-272 (2004/1-1)

Smoothed Particle Hydrodynamics simulations of merging white dwarfs.

GUERRERO J., GARCIA-BERRO E. and ISERN J.

Abstract (from CDS):

We present the results of three-dimensional Smoothed Particle Hydrodynamics (SPH) calculations of the process of coalescence of white dwarfs. We follow in detail the initial phase of the merging for several masses of the primary and the secondary of the binary system. Special attention has been paid to the issue of whether or not thermonuclear runaway occurs during the process of merging. We find that although relatively high temperatures are attained during the most violent phase of the merging process, the thermonuclear flash is rapidly quenched. The total mass lost by the system is also relatively small (of the order of 0.5% at most) except for the most massive primaries for which it is still small (∼2.2%). Consequently, a heavy accretion disk around the primary is formed. We also discuss the subsequent evolution of the resulting system and the possible astrophysical scenarios of interest.

Abstract Copyright:

Journal keyword(s): stars: white dwarfs - stars: interiors - stars: binaries: close - hydrodynamics - methods: numerical - accretion, accretion disks

Simbad objects: 5

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Number of rows : 5
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 PG 0136+251 WD* 01 38 52.9776840264 +25 23 22.640581464   15.83       DA1.2 82 0
2 GD 50 WD* 03 48 50.1859724280 -00 58 32.290187664 12.596 13.787 14.063 14.210 14.388 DA1.2 250 1
3 PG 1658+441 WD* 16 59 48.4241073768 +44 01 04.038522204   14.3 14.6     DAP1.6 139 0
4 KPD 1930+2752 HS* 19 32 14.8088063952 +27 58 35.445679608 12.80 13.75 13.82     sdB 153 0
5 2E 4673 HXB 23 01 08.14 +58 52 44.5           ~ 609 1

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2022.09.24-18:55:22

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