Statistics – Computation
Scientific paper
Mar 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988mnras.231...25e&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 231, March 1, 1988, p. 25-36.
Statistics
Computation
3
Binary Stars, Computational Astrophysics, Dwarf Novae, Magnetohydrodynamic Stability, Red Giant Stars, Stellar Envelopes, Lagrangian Equilibrium Points, Mass Transfer, Radiative Transfer, Roche Limit, Stellar Systems
Scientific paper
The author calculates numerically the unstable behaviour of the secondary star of a semi-detached binary system near the inner Lagrangian point, using a second-order, two-dimensional hydrodynamic scheme. This work is radiative only and thus may exaggerate any unstable motions of the star, with the intention only to determine the effects of the non-spherical Roche geometry on any mass loss flows. In comparison with previous one-dimensional calculations, the initial discrete mass loss is strengthened near the inner Lagrangian point and suppressed in neighbouring, off-axis regions. These mass loss motions generate a sideways travelling wave which moves across the outer stellar layers and excites further mass loss. The author concludes that the effects due to the non-spherical geometry of the star are important and should be included in future calculations.
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