Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998aas...19310305l&link_type=abstract
American Astronomical Society, 193rd AAS Meeting, #103.05; Bulletin of the American Astronomical Society, Vol. 30, p.1405
Astronomy and Astrophysics
Astronomy
Scientific paper
Most of the obvious features in the UV spectra of dwarf novae in outburst are thought arise from the reprocessing of light from the disk and boundary layer regions by material in a fast wind emanating from the inner accretion disk. Here we describe a new Monte-Carlo radiative transfer code designed first to calculate the ionization structure of a biconical wind of a high state dwarf nova and then to synthesize any portion of EUV, FUV, or NUV spectrum. Beginning with an assumed kinematic description for the wind, the ionization structure is calculated using a modified on-the-spot approximation. Radiation transfer for both the ionization calculation and the detailed spectral synthesis is carried out in the Sobolev approximation, accounting for multiple scattering in the wind. Results of a comparison between synthesized and observed spectra of several high state dwarf nova systems will be presented.
Knigge Christian
Long Knox S.
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