ECLIPSES OF ACCRETION DISC WINDS IN CATACLYSMIC VARIABLES - AN ATLAS OF THEORETICAL CIV LINE-PROFILES AND LINE FLUX LIGHT CURVES

Authors
Citation
C. Knigge et Je. Drew, ECLIPSES OF ACCRETION DISC WINDS IN CATACLYSMIC VARIABLES - AN ATLAS OF THEORETICAL CIV LINE-PROFILES AND LINE FLUX LIGHT CURVES, Monthly Notices of the Royal Astronomical Society, 281(4), 1996, pp. 1352-1362
Citations number
18
Categorie Soggetti
Astronomy & Astrophysics
ISSN journal
00358711
Volume
281
Issue
4
Year of publication
1996
Pages
1352 - 1362
Database
ISI
SICI code
0035-8711(1996)281:4<1352:EOADWI>2.0.ZU;2-D
Abstract
A grid of simulated eclipses of the wind-formed CIV resonance line in high-state, non-magnetic cataclysmic variables is presented. On this, trends in pre- and mid-eclipse line profiles and also in the light cur ves of different parts of the line are explored. We model the outflow as a rotating, biconical accretion disc wind and use the following thr ee variables to define the model grid: (i) the geometry (collimation) of the outflow; (ii) the wind kinematics (its poloidal velocity law); (iii) the viewing angle with respect to the disc plane. The most impor tant trends in our results are discussed and shown to be consistent wi th expectations based on the physics of radiative transfer in outflowi ng, multidimensional media. It is also stressed, however, that the com plexity of the line formation process is such that knowledge of basic trends alone is insufficient to draw secure conclusions about such out flows immediately from observations. The results presented here will t herefore be most usefully employed in direct comparisons with observat ional data.