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m = 1 Oscillations of Accretion Disks in Close Binary Systems

Published online by Cambridge University Press:  12 April 2016

Atsuo T. Okazaki*
Affiliation:
Astronomical Institute “Anton Pannekoek”, University of Amsterdam, Kruislaan 403, 1098 SJ Amsterdam, The Netherlands & College of General Education, Hokkai-Gakuen University, Toyohira-ku, Sapporo 062, Japan

Abstract

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We examine the two-dimensional structure of m = 1 modes in disks around white dwarfs in close binary systems. We find that the odd modes (warping modes) as well as even modes (eccentric modes) are confined to the outermost part of the disk. The period of the fundamental mode is of a few percent of the binary period, and is insensitive to the parity of the mode. These modes naturally explain the superhump periods of SU UMa stars.

Type
Part 15. Poster Papers
Copyright
Copyright © Astronomical Society of the Pacific 1997

References

Hirose, M., Osaki, Y., 1993, PASJ 45, 595 Google Scholar
Osaki, Y., 1996, PASP 108, 39 CrossRefGoogle Scholar