The ROSAT all-sky survey catalogue of optically bright late-type giants and supergiants^*

¹ Max-Planck-Institut für Extraterrestrische Physik, Giessenbachstr., 85740 Garching, Germany
² Hamburger Sternwarte, Gojenbergsweg 112, 21029 Hamburg, Germany

Send offprint request to: M. Hünsch

Received: 26 March 1997
Accepted: 5 May 1997

Abstract

We present X-ray data for all late-type (A, F, G, K, M) giants and supergiants (luminosity classes I to III-IV) listed in the Bright Star Catalogue that have been detected in the ROSAT all-sky survey. Altogether, our catalogue contains 450 entries of X-ray emitting evolved late-type stars, which corresponds to an average detection rate of about 11.7 percent. The selection of the sample stars, the data analysis, the criteria for an accepted match between star and X-ray source, and the determination of X-ray fluxes are described.