Coronae of Cool Stars

@inproceedings{Audard2003CoronaeOC,
  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},
  year={2003}
}
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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References

SHOWING 1-10 OF 12 REFERENCES
Investigations of stellar coronae with XMM-Newton
The XMM-Newton observatory has given a strong new impetus to the investigations of stellar coronae. It carries high-resolution X-ray spectroscopic instruments that give access to information on the
The FK Comae stars
The paper presents IUE observations of three very rapidly rotating G-K giants (v sin i = 100 km/s). The UV spectra show strong chromospheric and transition region emission lines similar to (and in
X-ray coronae of stars: recent results from Chandra
Abstract I summarize and comment upon studies of stellar coronae using the remarkable spectroscopic and imaging capabilities of the Chandra X-ray Observatory. Nearly all types of stars are detected
A study of coronal abundances in RS CVn binaries
We present XMM-Newton data of several RS CVn binary systems. High-resolution X-ray spectra obtained with the Reflection Grating Spectrometers have been interpreted simultaneously with the European
A Study of the Coronal Plasma in RS CVn binary systems: HR 1099 and co
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 investigations in the
Chandra, Extreme Ultraviolet Explorer, and Very Large Array Observations of the Active Binary System σ2 Coronae Borealis
We present the results of a coordinated observing campaign on the short-period RS CVn binary σ2 Coronae Borealis (F6V + G0V; Porb = 1.14 days) with the Very Large Array, the Extreme Ultraviolet
High-Resolution X-Ray Spectroscopy with Chandra and XMM-Newton
▪ Abstract The launches of the Chandra X-Ray Observatory in June 1999 and the XMM-Newton Observatory in December 1999 opened a new era in X-ray astronomy. Both of these missions incorporate novel
LABORATORY MEASUREMENTS AND IDENTIFICATION OF THE Fe xviii-xxiv L-SHELL X-RAY LINE EMISSION
A comprehensive survey of Dn � 1 iron L-shell X-ray line emission is presented. We have used the electron beam ion trap EBIT-II at the Lawrence Livermore National Laboratory and equipped with flat
ApJ, in preparation
  • 2004
ApJ, 582, 1073 Paerels
  • ApJ, 582, 1073 Paerels
  • 2003
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