RMxAA

Revista Mexicana de Astronomía y Astrofísica

ISSN: 3061-8649
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Keywords

Late-Type Giants: Calcium Lines
Late-Type Giants: Stellar Winds
Late-Type Supergiants: Calcium Lines
Late-Type Supergiants: Stellar Winds
Stellar Winds: Heating

How to Cite

The behaviour of Ca II lines of giants and supergiants in the light of stellar winds. (1990). Revista Mexicana De Astronomía Y Astrofísica, 21(1), 421. https://astronomia.unam.mx/journals/rmxaa/article/view/1990rmxaa..21..421g

Abstract

Coudé IIaO plates of thirty-five southern K-M giants and supergiants were obtained in the H and K lines of Ca II. Ca II K line intensity varies with temperature in a similar way as do transition region lines and coronal X-ray emission. This indicates that magnetic heating plays a certain role in the heating of the outer layers of late-type stars.
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