Eccentric discs in binaries with intermediate mass ratios: Superhumps in the VY Sculptoris stars

Details Eccentric discs in binaries with intermediate mass ratios: Superhumps in the VY Sculptoris stars Eccentric discs in binaries with intermediate mass ratios: Superhumps in the VY Sculptoris stars

2000-02-23

arxiv.org/abs/astro-ph/0002426v1

Mon.Not.Roy.Astron.Soc. 315 (2000) 707

Astronomy and Astrophysics

Astrophysics

6 pages with 7 figures, accepted by MNRAS

Scientific paper

10.1046/j.1365-8711.2000.03488.x

We investigate the role of the eccentric disc resonance in systems with mass ratios q greater than 1/4, and demonstrate the effects that changes in the mass flux from the secondary star have upon the disc radius and structure. The addition of material with low specific angular momentum to its outer edge restricts a disc radially. Should the mass flux from the secondary be reduced, it is possible for the disc in a system with mass ratio as large as 1/3 to expand to the 3:1 eccentric inner Lindblad resonance and for superhumps to be excited.

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