Synthetic spectra of accretion disks in DQ HER binaries

Details Synthetic spectra of accretion disks in DQ HER binaries Synthetic spectra of accretion disks in DQ HER binaries

Oct 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989stin...9025029m&link_type=abstract

Presented at the 11th North American Workshop on CV's and LMXRV's, Santa Fe, NM, 9-13 Oct. 1989

Astronomy and Astrophysics

Astronomy

Accretion Disks, Astronomical Models, Binary Stars, Spectrum Analysis, Stellar Magnetic Fields, Heating, Stresses, Ultraviolet Spectra

Scientific paper

The effect of the stellar magnetic field on the spectrum of the disk is explored by comparing synthesized disk spectra to the observed ultraviolet spectrum of the well-studied DQ Her binary GK Per. The parameterized disk-magnetosphere interaction models of Miller and Lamb is used to calculate the radius of the inner edge of the disk and the local heating rate within the disk as a function of radius. With appropriate choices of parameters, these models can describe the models of Ghosh and Lamb and Wang. Once the local heating rate is determined, an effective temperature was assigned to each of a series of disk annuli. The disk spectrum is then calculated by summing the flux contributed by each annulus, assuming that each annulus has the same spectrum as a main-sequence star with the assigned effective temperature.

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