Inclination and orbital-phase-dependent resonance line-profile calculations applied to cataclysmic variable winds.
Abstract
The observed properties of wind-formed resonance lines in the spectra of nova-like variables and dwarf novae in outburst, are discussed. A method is then presented of calculating inclination- and orbital-phase-dependent resonance line profiles formed in a constant-ionization wind flowing from an accretion disc centre. The particular case of the C IV λ1549 line is considered. The line-transfer method used is based upon Castor's spherically symmetric application of the Sobolev approximation. The role of a wide variety of wind and disc parameters in determining the line-profile form, at both low and high inclination angles, is investigated. The behaviour of the C IV λ1549 line in high-inclination systems during primary eclipse is considered. Application of the eclipse calculations to IUE observations of RW Tri and UX UMa suggests a wind mass-loss rate ⪆10-10M_sun;yr-1.
- Publication:
-
Monthly Notices of the Royal Astronomical Society
- Pub Date:
- February 1987
- DOI:
- 10.1093/mnras/224.3.595
- Bibcode:
- 1987MNRAS.224..595D
- Keywords:
-
- Cataclysmic Variables;
- Orbital Resonances (Celestial Mechanics);
- Resonance Lines;
- Stellar Orbits;
- Stellar Spectra;
- Stellar Winds;
- Ultraviolet Spectra;
- Accretion Disks;
- Dwarf Novae;
- Eclipsing Binary Stars;
- Inclination;
- Light Curve;
- Stellar Mass Ejection;
- Astrophysics