Comoving frame models of hot star winds I. Test of the Sobolev approximation in the case of pure line transitions

0354884 - ASÚ 2011 RIV FR eng J - Článek v odborném periodiku
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
Grant CEP: GA ČR GA205/07/0031
Výzkumný záměr: CEZ:AV0Z10030501
Klíčová slova: stars * winds * outflows
Kód oboru RIV: BN - Astronomie a nebeská mechanika, astrofyzika
Impakt faktor: 4.410, rok: 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.
Trvalý link: http://hdl.handle.net/11104/0193789