Circumstellar envelopes of hot stars

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Project Identification
GA205/04/1267
Project Period
1/2004 - 12/2006
Investor / Pogramme / Project type
Czech Science Foundation
MU Faculty or unit
Faculty of Science
Keywords
astrophysics, stars, hydrodynamics, radiation transfer
Cooperating Organization
Astronomical Institute of the ASCR, v. v. i.

Circumstellar envelopes of hot stars influence the stellar spectrum and in particular also the stellar evolution. The solution of proposed project will contribute to the understanding of both mentioned relationships. This is why we plan to calculatedetai led models of circumstellar envelopes. We plan to develop more advanced methods on the basis of existing model atmospheres, solution of radiative transfer equation in moving media, and multicomponent stellar wind models. Detailed properties of thesecircu mstellar envelopes will be calculated using mentioned sophisticated models, especially the mass-loss rates. Calculated spectra will be compared with the observed ones both in optical and ultraviolet region. Optical spectra will be acquired usingOndoejov 2m telescope and ultraviolet spectra will be extracted from internet IUE database. More exact wind parameters (mass-loss rates and terminal velocites) will be the output of this part of the project.

Publications

Total number of publications: 30


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