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NLTE analysis of SDO stars
Published online by Cambridge University Press: 04 August 2017
Extract
Among the faint blue halo stars the sdO's form a group whose evolutionary status is still not fully understood. Phenomenologically they appear to be related to the horizontal branch. The knowledge of stellar parameters and abundances may give a clue for understanding their evolutionary status. As the sdO's are hot (Teff ≥ 35000K), the assumption of LTE leads to substantial errors. Hence detailed NLTE analyses are inevitable.
- Type
- I. EVOLUTION OF LOW AND INTERMEDIATE MASS STARS OBSERVATIONS AND MODELS
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- Copyright
- Copyright © Reidel 1984