The identification of H2311 + 77 with HD220140, a probable RS CVn star

Astronomy and Astrophysics – Astronomy

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Binary Stars, Late Stars, X Ray Sources, Exosat Satellite, Heao 1, Main Sequence Stars, Stellar Luminosity, Stellar Rotation

Scientific paper

H2311+77, one of the bright soft X-ray sources in the sky originally
detected with HEAO 1, has been identified in an EXOSAT imaging
observation with a 7.7-mag late-type star, HD 220140. The X-ray
luminosity and the optical characteristics of this star indicate that it
is probably an RS CVn binary system.

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