Evolution of cataclysmic variables - Importance of detailed stellar models

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Cataclysmic Variables, Stellar Evolution, Stellar Models, Main Sequence Stars, Photosphere, Stellar Atmospheres

Scientific paper

The evolution of cataclysmic variables is studied using a detailed stellar code, in the framework of the disrupted magnetic braking model. The influence of the input stellar physics on the location and width of the period gap is discussed. It is shown that they are relatively sensitive to the assumed equation of state and to the treatment of the photospheric and subphotospheric layers of the secondary; however, the use of up-to-date equation of state and opacities yields a period gap starting at about 2 h and ending at about 3 h, as observed.

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