Modelling chromospheric line profiles in NGC 2808: Evidence of mass loss from RGB stars

In this study we test the possibility that the asymmetry in the profiles of the Hα and Ca II K lines in red giant stars is due to the presence of an active chromosphere rather than to mass loss. To this end, we compare line profiles computed using relevant model chromospheres to profiles of the Hα a...

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Detalles Bibliográficos
Autores principales: Mauas, P.J.D., Cacciari, C., Pasquini, L.
Formato: JOUR
Materias:
Globular clusters: individual: NGC 2808
Line: profiles
Stars: atmospheres
Stars: mass loss
Stars: Population II
Techniques: spectroscopic
Astronomy
Computer simulation
Extraterrestrial atmospheres
Spectrum analysis
Galaxies
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00046361_v454_n2_p609_Mauas
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

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