The EUVE Spectrum of kappa Ceti

E. Landi, M. Landini

Presentations at the 10th Cambridge Workshop ``Cool Stars, Stellar Systems and the Sun,'' Cambridge, MA, 1997 July 15-19

Abstract

The spectrum of kappa Cet in the region 80-370 Å observed by EUVE Spectrometers is discussed to investigate the transition region and the corona of the star. The medium wavelength spectrum of the star appears to be very similar to moderately active sun and no evidence exists of flare-like lines observed in many active stars by EUVE. Several emission lines of moderately ionized iron (from Fe IX to FE XVIII) are identified and used together with IUE observations to evaluate the differential emission measure. (DEM). The DEM peaks at about 3X10^6 K, a value typical of solar active regions. Comparison of observed and synthetic spectra are performed using Arcetri code, including both Arcetri and CHIANTI databases.

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