4 papers · 1 filter
Flare and quiescent X-ray emission from Sigma Geminorum
R. Nordon, E. Behar, M. Guedel
The X-ray active RS CVn binary system Sigma Geminorum was observed during a long-duration flare with XMM-Newton. We compare line emission during the flare with line emission measur…
XMM-Newton Probes the Solar Past: Coronal Abundances of Solar Analogs at Different Ages
M. Guedel, M. Audard, A. Sres +5
We present an X-ray spectral analysis of four solar analogs with different ages and magnetic activity levels. We find largely different coronal compositions. The most active stars…
A Systematic Spectroscopic X-Ray Study of Stellar Coronae with XMM-Newton: Early Results
M. Guedel, M. Audard, K. W. Smith +10
We have been conducting a comprehensive survey of stellar coronae with the XMM-Newton Reflection Grating Spectrometers during the commissioning, calibration, verification, and guar…
A Study of the Coronal Plasma in RS CVn binary systems: HR 1099 and co
M. Audard, M. Guedel, A. Sres +5
XMM-Newton has been performing comprehensive studies of X-ray luminous RS CVn binary systems in its calibration and guaranteed time programs. We present results from ongoing invest…