Journal article
An Improved Line-Strength Parameterization in Hot-Star Winds
The Astrophysical journal, Vol.454(1), pp.410-419
11/20/1995
DOI: 10.1086/176492
Abstract
An alternative is suggested for the current standard for parameterizing the overall strength of the line opacity in hot-star winds, the so-called CAK k parameter. The objective is a better conceptualization of the physical effects that produce dramatic differences in the mass-loss_rates between B, O, and Wolf-Rayet stars. The approach identifies a dimensionless line-strength parameter Q̄ whose value is estimable from first principles and is fairly constant, nominally 2 × 103, and is proportional to metallicity. The order of this value derives immediately from the coherent amplification inherent in any resonance. This does not represent a new theory, but a conceptual map is laid out for understanding and constraining mass-loss rates of all line-driven winds. This is especially pertinent for unlocking the mystery of why Wolf-Rayet stars experience such copious mass loss despite their sub-O class luminosity.
Details
- Title: Subtitle
- An Improved Line-Strength Parameterization in Hot-Star Winds
- Creators
- Kenneth G. Gayley
- Resource Type
- Journal article
- Publication Details
- The Astrophysical journal, Vol.454(1), pp.410-419
- DOI
- 10.1086/176492
- ISSN
- 0004-637X
- eISSN
- 1538-4357
- Language
- English
- Date published
- 11/20/1995
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984428772502771
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