Hydrodynamic modeling of mass loss from cataclysmic variable secondaries

Ronald Lynn Gilliland

Research output: Contribution to journalArticle

Abstract

Results of detailed computer simulations of mass loss from a cataclysmic variable secondary are presented. The calculations involve solution of the nonlinear hydrodynamical equations of stellar structure under varying degrees of approximation in an attempt to determine stability of the mass loss process. For comparison with previous theoretical studies dynamical sequences were computed assuming spherically symmetric mass loss from the secondary. The assumption of spherical symmetry is very poor since nearly all of the transferred material is lost within a small region about the inner Lagrangian point. Dynamical sequences treating only the region near the Lagrangian point were constructed in a manner consistent with the assumption of Roche geometry. Finally the effects of mass flow nonorthogonal to the Roche equipotential surfaces were treated in a very simple way. The last generalization produces stable mass loss in a model which was unstable for the less realistic approximation schemes. The finding of stable mass transfer implies that instability of the secondary star is not the mechanism leading to cataclysmic variable outbursts. This conclusion is consistent with published observations of dwarf novae made just prior to outburst.

Original languageEnglish (US)
Pages (from-to)641-642
Number of pages2
JournalSpace Science Reviews
Volume27
Issue number3-4
DOIs
StatePublished - Nov 1 1980

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cataclysmic variables
hydrodynamics
modeling
outburst
dwarf novae
stellar structure
equipotentials
mass flow
approximation
nonlinear equations
mass transfer
theoretical study
computerized simulation
computer simulation
symmetry
stars
loss
geometry

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Gilliland, Ronald Lynn. / Hydrodynamic modeling of mass loss from cataclysmic variable secondaries. In: Space Science Reviews. 1980 ; Vol. 27, No. 3-4. pp. 641-642.
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Hydrodynamic modeling of mass loss from cataclysmic variable secondaries. / Gilliland, Ronald Lynn.

In: Space Science Reviews, Vol. 27, No. 3-4, 01.11.1980, p. 641-642.

Research output: Contribution to journalArticle

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