Fig. 13.
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Normalized orbital period distributions for different classes of CVs. Polar systems are represented by solid red lines, IPs by dashed teal lines, and nonmagnetic systems by dotted gray lines. Data were compiled from Norton et al. (2004), Ferrario et al. (2015), Parsons et al. (2021), Hakala et al. (2022), van Roestel et al. (2025), Sparks & Sion (2021), and Schreiber et al. (2024). The gray shaded region indicates the period gap proposed by Schreiber et al. (2024). The numbers shown in the legend (n) denote the number of systems in each subclass.
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