Coronae of Cool Stars

  title={Coronae of Cool Stars},
  author={M. Audard and Stephen Alan Drake and Manuel Gudel and Rolf Mewe and Roberto Pallavicini and Theodore Simon and K. P. Singh and Stephen L. Skinner and Nanchang University and Usra and NasaGsfc and Paul Scherrer Institut and SRON-Utrecht and P. North Armagh Observatory and University of Hawaii and Tata Institute of Fundamental Research and CASAUniversity of Colorado},
We present preliminary results of grating observations of YY Mensae and V824 Arae by Chandra and XMM-Newton. Spectral features are presented in the context of the emission measure distributions, the coronal abundances, and plasma electron densities. In particular, we observe a coronal N/C enhancement in YY Men believed to reflect the photospheric composition (CN cycle). Finally, we interpret line broadening in YY Men as Doppler thermal broadening in its very hot corona. 
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ApJ, in preparation
  • 2004
ApJ, 582, 1073 Paerels
  • ApJ, 582, 1073 Paerels
  • 2003