Spectrophotometry of the RS Canum Venaticorum stars. II - A study of seven systems from 4000-11000 angstroms

Astronomy and Astrophysics – Astrophysics

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Eclipsing Binary Stars, Stellar Spectrophotometry, Light Curve, Main Sequence Stars, Photosphere, Spectral Energy Distribution, Starspots

Scientific paper

The results of a narrow-band spectrophotometric survey of seven bright northern RS CVn stars are presented. The temperatures for the constituent stars in the systems are found to be: RS CVn(6200, 5100 K), WW Dra(5500, 5100 K), Z Her(6000, 5500 K), HR 4665(4900, 4400 K), HR 5110(6700, 6000 K), Sigma Gem(4900, 4400 K), and UX Com(5500 K); only the cooler star was observed. The continuous energy distributions, synthesized b-y light curves, and synthesized colors for the stars are given. The results indicate that the spectrophotometric method yields precise information about the structure and thermal properties of stellar photospheres for active stars.

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