Computer Science
Scientific paper
Sep 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985esasp.239..141m&link_type=abstract
In ESA Proceedings of ESA Workshop on a Cosmic X-Ray Spectroscopy Mission p 141-147 (SEE N86-22461 12-89)
Computer Science
Binary Stars, Stellar Spectra, X Ray Spectra, Coronal Loops, Heao 2, Spectrum Analysis, Stellar Coronas, Stellar Temperature, Temperature Distribution
Scientific paper
Results from a survey of RS CVn binaries which were observed with the Imaging Proportional Counter (IPC) on board the Einstein Observatory are presented. Spectral analyses of the IPC pulse height spectra show that the coronae of RS CVn binaries always contain hot gas with temperatures 10 million K, similar to active late-type main sequence stars, and that at least 2 temperature components are necessary to account for the higher quality IPC spectra (when absorption is unimportant). It is argued that these bimodal temperature distributions indicate true distributions of emission measure vs temperature that are continuous (just as is the case for magnetically-confined coronal plasma loops observed on the Sun). It is shown that none of the derivable X-ray characteristics of RS CVn binaries depend on rotation period, implying that claims of period-activity relationships in RS CVn binaries are unfounded.
Golub Leon
Harnden Rick F.
Majer Pietro
Rosner Robert
Schmitt Juergen H. M. M.
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