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The Secondary Stars in Short Period (Magnetic) Cataclysmic Variables

Published online by Cambridge University Press:  12 April 2016

Steve B. Howell
Steve B. Howell*
Affiliation:
University of California, Riverside, CA 92521

Abstract

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We review the recent knowledge base pertaining to causes for mass accretion variations (high/low states) in highly magnetic cataclysmic variables (i.e. polars). We then examine what theory has to say about the properties of the secondary stars (the mass donors) with respect to those CVs with very short orbital periods. Finally, we use recent observations of EF Eri in an extended low state to provide direct observational evidence which shows that this CV, as well as a few others, likely contain very low mass, sub-stellar secondary stars.

Type
Part 8. Stellar Components
Information
International Astronomical Union Colloquium , Volume 190: Magnetic Cataclysmic Variables , 2004 , pp. 353 - 359
Copyright
Copyright © Astronomical Society of the Pacific 2004

References

Beuermann, K., Wheatly, P., Ramsey, G., Euchner, F., & Gänsicke, B. T. 2000, A&A, 354, L49 Google Scholar
Bianchini, A. 1992, in “Vina del Mar Workshop on Cataclysmic Variable Stars”, ed. Vogt, Nikolaus, ASP Conf. Series Vol. 29, 284 Google Scholar
Guinan, E. 1999, private communicationGoogle Scholar
Harrison, T., Howell, S. B, Huber, M., Osborne, , Heather, L., Holtzman, J. A, Cash, J. L., & Gelino, D. M 2003, AJ, 125, 2609 Google Scholar
Hessman, F. V., Gänsicke, B. T., & Mattei, J. A. 2000, A&A, 361, 952 Google Scholar
Howell, S. B, Nelson, L., & Rappaport, S. 2001, ApJ, 550, 897 CrossRefGoogle Scholar
Howell, S. B, Ciardi, D., Dhillon, V., & Skidmore, W. 2000, ApJ, 530, 904 Google Scholar
Howell, S. B, Szkody, P., & Cannizzo, J. 1995, ApJ, 439, 337 CrossRefGoogle Scholar
King, A. & Cannizzo, J. 1998, ApJ, 499, 348 CrossRefGoogle Scholar
Mennickent, R., & Diaz, M. 2002, MNRAS, 336, 767 Google Scholar
Rottler, L., Batalha, C., Young, A., & Vogt, S. 2002, A&A, 392, 535 Google Scholar
Webb, N., Naylor, T., & Jeffries, R. 2002, ApJ, 568, L45 Google Scholar