Journal article
Line-driven ablation and wind tilting by external irradiation
The Astrophysical journal, Vol.513(1), pp.442-459
03/01/1999
DOI: 10.1086/306848
Abstract
The directional variation of the velocity gradient in a supersonic, radiatively accelerated flow gives an effectively anisotropic character to the line-scattering process. This leads to surprising consequences in source geometries that are more complex than isolated nonrotating stars. In this paper we explore the wind dynamics from a planar slab atmosphere that is irradiated by an external oblique source, within the framework of standard Castor, Abbott, & Klein (CAK) wind theory. We show that the presence of externally incident radiation can be surprisingly effective at tilting the how away from the vertical. Even more surprising is our conclusion that such illumination should often enhance the mass loss and can even induce outflow from a surface with no intrinsic radiation source. We examine the physical causes of such "line-driven ablation" and discuss the potential implications for modeling line-driven flows in massive-star binary and accretion-disk systems.
Details
- Title: Subtitle
- Line-driven ablation and wind tilting by external irradiation
- Creators
- K G Gayley - University of IowaS P Owocki - University of DelawareS. R. Cranmer
- Resource Type
- Journal article
- Publication Details
- The Astrophysical journal, Vol.513(1), pp.442-459
- Publisher
- Univ Chicago Press
- DOI
- 10.1086/306848
- ISSN
- 0004-637X
- eISSN
- 1538-4357
- Number of pages
- 18
- Language
- English
- Date published
- 03/01/1999
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984429049602771
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