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Comoving frame models of hot star winds I. Test of the Sobolev approximation in the case of pure line transitions
- 1.0354884 - ASÚ 2011 RIV FR eng J - Journal Article
Krtička, J. - Kubát, Jiří
Comoving frame models of hot star winds I. Test of the Sobolev approximation in the case of pure line transitions.
Astronomy & Astrophysics. Roč. 519, September (2010), A50/1-A50/9. ISSN 0004-6361. E-ISSN 1432-0746
R&D Projects: GA ČR GA205/07/0031
Institutional research plan: CEZ:AV0Z10030501
Keywords : stars * winds * outflows
Subject RIV: BN - Astronomy, Celestial Mechanics, Astrophysics
Impact factor: 4.410, year: 2010
We provide hot star wind models with radiative force calculated using the solution of comoving frame (CMF) radiative transfer equation. The wind models are calculated for the first stars, O stars, and the central stars of planetary nebulae. We show that without line overlaps and with solely thermal line broadening the pure Sobolev approximation provides a reliable estimate of the radiative force even close to the wind sonic point. Consequently, models with the Sobolev line force provide good approximations to solutions obtained with non-Sobolev transfer.
Permanent Link: http://hdl.handle.net/11104/0193789
Number of the records: 1