Kinematic model inversions of hot star recurrent DAC data - tests against dynamical CIR models

Krticka, J., Barrett, R.K., Brown, J.C. and Owocki, S.P. (2004) Kinematic model inversions of hot star recurrent DAC data - tests against dynamical CIR models. Astronomy and Astrophysics, 417(3), pp. 1039-1045. (doi: 10.1051/0004-6361:20034372)

Abstract

The Discrete Absorption Components (DACs) commonly observed in the ultraviolet lines of hot stars have previously been modelled by dynamical simulations of Corotating Interaction Regions (CIRs) in their fine-driven stellar winds. Here we apply the kinematic DAC inversion method of Brown et al. to the hydrodynamical CIR models and test the reliability of the results obtained. We conclude that the inversion method is able to recover valuable information on the velocity structure of the mean wind and to trace movement of velocity plateaux in the hydrodynamical data, though the recovered density profile of the stream is correct only very near to the stellar surface.

• Item Type: Articles
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Brown, Professor John
• Authors: Krticka, J., Barrett, R.K., Brown, J.C., and Owocki, S.P.
• College/School: College of Science and Engineering > School of Physics and Astronomy
• Journal Name: Astronomy and Astrophysics
• Publisher: EDP Sciences
• ISSN: 0004-6361
• ISSN (Online): 1432-0746
• Copyright Holders: Copyright © 2004 EDP Sciences
• First Published: First published in Astronomy and Astrophysics 417(3):1039-1045
• Publisher Policy: Reproduced in accordance with the copyright policy of the publisher