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Modeling the Diverse FUV Spectra of Disk-Dominated Cataclysmic Variables

Published online by Cambridge University Press:  22 February 2018

Knox S. Long  and
Christian Knigge
Knox S. Long
Affiliation:
Space Telescope Science Institute, Baltimore, MDUSA
Christian Knigge
Affiliation:
U. of Southampton, UK

Abstract

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The FUSE and HST spectra of dwarf novae in outburst, and of nova-like variables exhibit a wide range of characteristics. In a few systems, there are obvious signatures of a fast wind in the form of P-Cygni-like profiles of OVI and other relatively high ionization state ions. But this is rare. More common are systems with FUV spectra, showing a complex mixture of high and low ionization state lines. Here we describe attempts to reproduce the spectra using a Monte Carlo radiative transfer code developed to model bi-conical winds in disk systems.

Resumen

Resumen

Los espectros de FUSE y HST de novas enanas en explosiones y de variables semejantes a novas presentan un amplio rango de características. En unos cuantos sistemas existen señales obvias de un viento rápido en la forma de los perliles de OVI semejantes a P-Cygni y de otros iones en relativamente altos estados de ionización. Pero estos casos son raros. Son más comunes los sistemas con espectros FUV que presentan una compleja mezcla de lineas de alto y bajo estado de ionización. Se describen intentos para reproducir los espectros utilizando en código dc Monte Carlo de 11 transferencia radiativa, desarrollado para modelar vientos bicónicos en sistemas de disco.

Keywords

AccretionAccretion Disks — BinariesClose Novae, Cataclysmic Variables — StarsMass Loss
Type
The Contributed Papers
Information
International Astronomical Union Colloquium , Volume 194: Compact binaries in the galaxy and beyond , 2004 , pp. 158 - 159
Copyright
Copyright © Instituto de astronomia/revista mexicana de astronomίa y astrofίsica 2004

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