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arXiv · 1107.4793

FUSE Observational Evidence of the Boundary Layer of MY Lyrae in the High State

P. Godon·E. M. Sion
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Abstract

We carry out a spectral analysis of the archival FUSE spectrum of the VY Scl nova-like cataclysmic variable MV Lyrae obtained in the high state. We find that standard disk models fail to fit the flux in the shorter wavelengths of FUSE (< 950$A). An improved fit is obtained by including a modeling of the boundary layer at the inner edge of the disk. The result of the modeling shows that in the high state the disk has a moderate accretion rate of about 2.E09 solar mass per year, a low inclination, a boundary layer with a temperature of around 100,000K, and size 0.20Rwd, and the white dwarf is possibly heated up to a temperature of 50,000K or higher.

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P. Godon, E. M. Sion. 2011-07-24. FUSE Observational Evidence of the Boundary Layer of MY Lyrae in the High State. https://arxiv.org/abs/1107.4793

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