SWSex Stars, Old Novae, and the Evolution of Cataclysmic Variables

Authors

  • L. Schmidtobreick European Southern Observatory, Casilla 19001, Santiago 19, Chile
  • C. Tappert Departamento de Fısica y Astronomıa, Universidad de Valparaıso, Avda. Gran Bretana 1112, Valparaıso, Chile

DOI:

https://doi.org/10.14311/APP.2015.02.0188

Abstract

The population of cataclysmic variables with orbital periods right above the period gap are dominated by systems with extremely high mass transfer rates, the so-called SW Sextantis stars. On the other hand, some old novae in this period range which are expected to show high mass transfer rate instead show photometric and/or spectroscopic resemblance to low mass transfer systems like dwarf novae. We discuss them as candidates for so-called hibernating systems, CVs that changed their mass transfer behaviour due to a previously experienced nova outburst. This paper is designed to provide input for further research and discussion as the results as such are still very preliminary.

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Published

2015-02-23