Spectra of accretion discs around white dwarfs

TL;DR

This paper presents an improved spectral model for accretion discs around white dwarfs, incorporating line opacities and convection, applicable to both hot and cold disc states.

Contribution

The authors developed an enhanced spectral modeling approach that includes line opacities and convection, enabling more accurate simulations of white dwarf accretion discs.

Findings

Model successfully simulates spectra of hot and cold discs

Includes line opacities for detailed spectral features

Accounts for convective energy transport

Abstract

We present spectra of accretion discs around white-dwarfs calculated with an improved and updated version of the Shaviv & Wehrse (1991) model. The new version includes line opacities and convective energy transport and can be used to calculate spectra of hot discs in bright systems (nova--like variables or dwarf novae in outburst) as well as spectra of cold accretion discs in quiescent dwarf novae.