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Models for Dynamically Stable Cataclysmic Variable Systems

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Short-Period Binary Stars: Observations, Analyses, and Results

Part of the book series: Astrophysics and Space Science Library ((ASSL,volume 352))

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Spectra provide the most detailed information about Cataclysmic Variables (CVs), and synthetic spectra potentially represent the best avenue to study the characteristics of these fascinating objects. Warner [74] (sect. 2.6.1) lists theoretical flux distribution studies. Also see the discussion by la Dous [12] and references therein. Early representation of accretion disk continua by a sum of black body curves [58,69] was supplanted by model stellar atmosphere spectra applied to finite width annuli of similar T eff and log g[34, 35, 45]. The synthetic spectra studies by Wade [71] and Shaviv &Wehrse [60] may be mentioned in particular.

Wade [72] examined the fits of synthetic accretion disk spectra, based both on black body radiation curves and model stellar atmosphere spectra, to a sample of nine novalike CVs. He found appreciable discrepancies between the models and observations, and concluded in particular that model stellar atmosphere spectra do not reflect the physics of accretion disks.

To the best of our knowledge, the literature does not previously describe a general purpose program to calculate synthetic spectra and synthetic light curves of CVsystems, based on detailed models of accretion disk annuli, including the contributions of the WD, the secondary star, and the accretion disk rim, and tailored to specific systems. Such a program should provide an option to calculate an accretion disk model that is assumed to be quasistationary but for which the radial temperature profile does not follow the standard model. This paper describes a program suite with those characteristics.

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  1. Department of Astronomy, University of Washington, 98195, Seattle, WA, USA

    Albert P. Linnell

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Linnell, A.P. (2008). Models for Dynamically Stable Cataclysmic Variable Systems. In: Short-Period Binary Stars: Observations, Analyses, and Results. Astrophysics and Space Science Library, vol 352. Springer, Dordrecht. https://doi.org/10.1007/978-1-4020-6544-6_9

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