Expanding Atmospheres in OB Supergiants--III: P Cygni
نویسندگان
چکیده
منابع مشابه
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Red supergiants with their enormous brightness at J-band are ideal probes of cosmic chemical composition. It is therefore crucial to have realistic models of radiative transfer in their atmospheres, which will permit determination of abundances accurate to 0.15 dex, the precision attainable with future telescope facilities in galaxies as distant as tens of Mpc. Here, we study the effects of non...
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Context. After leaving the main sequence, massive stars undergo complex evolution, which is still poorly understood. With a population of hundreds of OB stars, the starburst cluster Westerlund 1 offers an unparallelled environment to study their evolutionary tracks. Aims. We characterise a large sample of evolved OB stars in the cluster, with the aim of determining cluster parameters and place ...
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Context. After leaving the main sequence, massive stars undergo complex evolution, which is still poorly understood. With a population of hundreds of OB stars, the starburst cluster Westerlund 1 offers an unparallelled environment to study their evolutionary tracks. Aims. We characterise a large sample of evolved OB stars in the cluster, with the aim of determining cluster parameters and place ...
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New constraints on the large-scale wind structures responsible for discrete absorption components are obtained from far-ultraviolet time-series observations of O supergiants in the Large Magellanic Cloud. 1. What Causes DACs? Discrete absorption components (DACs) are optical depth enhancements in the absorption troughs of P Cygni profiles, which (a) occur very commonly in wind profiles of OB-ty...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 1969
ISSN: 0035-8711,1365-2966
DOI: 10.1093/mnras/144.2.235