A Synthetic Spectrum and Light-Curve Analysis of the Cataclysmic Variable IX Velorum*

摘要: Spectrum synthesis analysis of FUSE and STIS spectra for the cataclysmic variable IX Vel shows that it is possible to achieve a close synthetic spectrum fit with mass transfer rate = 5 × 10-9 M☉ yr-1 modified standard model temperature profile. The innermost four annuli accretion disk model, extending r/rWD ≈ 4, are isothermal; beyond limit temperatures follow model. A light K-band photometry requires shallow eclipses rim secondary star limb. geometry constrains orbital inclination i 57° ± 2°. curve vertically extended rim, predicted by gravitational equilibrium, shadow star. enhanced vertical extension consistent recent MHD predictions CV disks. Matching differing observed heights alternate light-curve maxima warm region downstream intersection point stream rim. inconsistent expectation bright spot associated shock.