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Spectroscopic analysis of O-type stars in the upper part of the HR diagram
Published online by Cambridge University Press: 25 May 2016
Abstract
We present observations and analyses of stars earlier than 06. The analyses are done with nlte planeparallel, hydrostatic model atmospheres. The effect of line-blocking for the determination of the stellar parameters is studied, and it is concluded that it must be taken into account for very hot stars. It is also shown that planeparallel models cannot fit properly the spectra of very hot stars. Thus, we perform new analyses with Unified Model Atmospheres, which result necessary for the reproduction of the spectra from the very upper part of the HR diagram.
- Type
- Part 2. Models for single star evolution of massive stars: wind + atmosphere + interior
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- Copyright © Astronomical Society of the Pacific 1999