RMxAA

Revista Mexicana de Astronomía y Astrofísica

ISSN: 3061-8649
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Keywords

Be Stars: Line Profiles
Be Stars: H Alpha
Be Stars: Circumstellar Shells

How to Cite

Evolution of the Hα profile of the Be star HD 184279. (1990). Revista Mexicana De Astronomía Y Astrofísica, 20(1), 7. https://astronomia.unam.mx/journals/rmxaa/article/view/1990rmxaa..20....7a

Abstract

The authors report new Hα spectral observations on the V/R Be and shell star HD 184279. The observations cover part of a cycle that is probably reaching the steady-state of an activity period that started around 1971. The physical mechanism that can explain the observations, suggests that electron scattering is responsible for the very large emission wings observed. A small and very variable shell is present around the star, probably in form of an elongated disk that develops and grows during part of the cycle. A picture with an eccentric disk with semi-axis of 2 and 15 stellar radius seems to be adequate for this star. This envelope has a total mass of 10-9 stellar masses.
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