Off-center ignition of nuclear burning in merging white dwarfs

Details Off-center ignition of nuclear burning in merging white dwarfs Off-center ignition of nuclear burning in merging white dwarfs

Apr 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987apj...315..229k&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 315, April 1, 1987, p. 229-233.

Astronomy and Astrophysics

Astrophysics

45

Eclipsing Binary Stars, Nuclear Astrophysics, Nuclear Fusion, Stellar Interiors, Stellar Mass Accretion, White Dwarf Stars, Carbon, Helium, Stellar Composition, Stellar Evolution, Stellar Mass, Symmetry

Scientific paper

The ignition of nuclear burning in merging white dwarfs is investigated for various combinations of component stars composed of He, C + O, and O + Ne + Mg. It is assumed that a rapidly accreting white dwarf mimics the massive component of a merging double-white-dwarf binary system. By computing steady models the location of nuclear ignition is obtained as a function of the accretion rate and the mass of accreting stars. For C + O dwarf pairs, accretion at a rate higher than about 2.7 x 10 to the -6th solar mass/yr leads to the off-center carbon ignition. The white dwarf mass (WDM) at the off-center ignition is smaller for higher accretion rate. For the highest accretion rate, the Eddington accretion limit, WDM = 1.07 solar mass when carbon ignites off-center. For WDM smaller than this value, no carbon ignition occurs. The off-center Ne ignition in an O + Ne + Mg white dwarf does not occur even in a model with the Eddington accretion rate. Helium ignition in He-accreting C + O white dwarfs is also considered.

Affiliated with

Also associated with

No associations

Rating

Off-center ignition of nuclear burning in merging white dwarfs does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Off-center ignition of nuclear burning in merging white dwarfs, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Off-center ignition of nuclear burning in merging white dwarfs will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1347519