The consequences of magnetic fields for the atmospheres of cool stars are addressed based on IUE and Einstein Observatory observations. Gross atmospheric structure data for cool luminous stars are discussed, and the relevance of the observations for the energy balance and nonradiative heating rates is considered. Data from X-ray fluxes, low dispersion UV spectra, and high dispersion spectra in the region of the Mg II resonance lines are presented. New results on cool star atmospheres provided by high dispersion UV spectra are considered, including those pertaining to spectral line identification, identification of emission components in close binary systems, densities and atmospheric extension, emission line widths, properties of stellar winds as derived from IUE data, and systematic flows of transition region plasma. An explanation for the observed spectra of cool giants and supergiants is proposed in terms of active, quiet, and hybrid stars.
Cool luminous stars
1982-01-01
Sonstige
Keine Angabe
Englisch
Elsevier | 1982
|IUE observations of cool stars
Elsevier | 1982
|Einstein observations of cool stars
Elsevier | 1982
|Einstein observations of cool stars
NTRS | 1982
|Dynamics, Winds and Structure in Cool Stars
British Library Online Contents | 1998
|