Secondary stars in CVs: the theoretical perspective |
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Institution: | 1. Center for Interdisciplinary Exploration and Research in Astrophysics (CIERA) and Department of Physics and Astronomy, Northwestern University, Evanston, IL 60208, USA;2. School of Physics and Astronomy, Southampton University, Highfield, Southampton SO17 1BJ, UK |
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Abstract: | We apply the new generation of theoretical models of low-mass stars to secondaries in CVs, focussing on systems above the period gap. The models confirm that the spectral type should be a good indicator of the donor mass. The orbital period-spectral type diagram can potentially constrain the long-term mean mass transfer rate. A transfer rate that increases with decreasing period is most easily reconciled with the observational data. |
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