Rotational modulation of spots and plages on RSCVn stars

Details Rotational modulation of spots and plages on RSCVn stars Rotational modulation of spots and plages on RSCVn stars

Jul 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984esasp.218..343b&link_type=abstract

In ESA Fourth European IUE Conf. p 343-349 (SEE N84-35135 24-88)

Astronomy and Astrophysics

Astronomy

5

Binary Stars, Data Correlation, Faculae, Optical Properties, Stellar Rotation, Iue, Line Spectra, Spaceborne Astronomy, Stellar Atmospheres, Ultraviolet Spectra

Scientific paper

Observations of three RS CVn stars made with the IUE satellite are presented. Emission line fluxes are found to vary in anti-phase with the stars' optical variations. The authors interpret these correlations in terms of large-scale spots in the stellar photospheres with overlying magnetic loops, giving rise to non-thermal heating of the layers above the spots. Evidence of nonthermal gas motions is also presented which appear to be associated with the most active regions of the stars.

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