Accretion disk structure and spectral energy distribution in short orbital period dwarf novae

Details Accretion disk structure and spectral energy distribution in short orbital period dwarf novae Accretion disk structure and spectral energy distribution in short orbital period dwarf novae

Sep 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001phdt.........6m&link_type=abstract

Thesis (PhD). UNIVERSITY OF WYOMING, Source DAI-B 62/03, p. 1432, Sep 2001, 154 pages.

Physics

4

Scientific paper

This thesis presents a detailed study of two aspects of short orbital period dwarf novae. The structure of the accretion disk in the two systems WZ Sge and V893 Sco is investigated through emission lines analysis using high resolution, time resolved spectra, Radial velocities, Doppler maps, Ratioed Doppler maps, and Balmer decrements are determined and discussed for each system. Although dissimilar, both systems showed that radial velocity curves from accretion disk emission lines are not good tracers of the white dwarf orbital motion. The physical structure of the accretion disk does not match currently used accretion disk models. The secondary star temperature, the binary evolutionary status, and the accretion disk continuum emission are determined for the five WZ Sge-like systems LL And, VY Aqr, WX Cet, EF Peg, and SW UMa. Using multi-wavelength observations (1200Å-2.5μm), the spectral energy distribution (SED) is analyzed. Results address the hypothesis that WZ Sge-like systems are post orbital period minimum cataclysmic variables, with cool brown dwarf-like secondary stars and accretion disk continuum emission inconsistent with either the optically thick, steady state α-disk model, or simple blackbody emission. Results also imply that the accretion disk gas is likely to be of low density optically and thin.

Affiliated with

Also associated with

No associations

Rating

Accretion disk structure and spectral energy distribution in short orbital period dwarf novae does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Accretion disk structure and spectral energy distribution in short orbital period dwarf novae, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Accretion disk structure and spectral energy distribution in short orbital period dwarf novae will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1162324