Simultaneous X-Ray and Photometric Observations of the Flare Star YZ CMi

Doyle, J. G.; Butler, C. J.

United Kingdom

Abstract

Broad-band photometric observations of YZ CMi show a 1.2 magnitude U-band flare, however, simultaneous X-ray observations from EXOSAT show no detectable increase. It is suggested that the energy was dissipated before reaching the corona. Two long duration U-band enhancements detected during the optical monitoring may have been the result of back-heating from an enhanced coronal X-ray flux.

1986 Cool Stars, Stellar Systems and the Sun
Exosat 0