THE PHASE-0.5 ABSORPTION IN SW SEXTANTIS-TYPE CATACLYSMIC VARIABLES

Authors
HELLIER C
Citation
C. Hellier, THE PHASE-0.5 ABSORPTION IN SW SEXTANTIS-TYPE CATACLYSMIC VARIABLES, Publications of the Astronomical Society of the Pacific, 110(746), 1998, pp. 420-424
Citations number
24
Categorie Soggetti
Astronomy & Astrophysics
Journal title
Publications of the Astronomical Society of the Pacific
ISSN journal
00046280 → ACNP
Volume
110
Issue
746
Year of publication
1998
Pages
420 - 424
Database
ISI
SICI code
0004-6280(1998)110:746<420:TPAISS>2.0.ZU;2-A
Abstract
The SW Sextantis stars are a group of cataclysmic variables with disti nctive observational characteristics, including absorption features in the emission-line cores at phases 0.2-0.6. Hellier & Robinson have pr oposed that these features are caused by the accretion stream flowing over the accretion disk. However, in a simple model the absorption occ urred at all orbital phases, which is contradicted by the data. I show that invoking a hared accretion disk resolves this problem.