A Systematic Spectroscopic X-Ray Study of Stellar
Coronae with XMM-Newton: Early Results
M. Guedel, M. Audard, K. Smith, A. Sres, C. Escoda, R. Wehrli,
E. Guinan, I. Ribas, A. Beasley, R. Mewe, A. Raassen, E. Behar,
& H. Magee
Institute: Paul Scherrer Institut
Institute: Institute of Astronomy, ETH Zurich
Institute: Alte Kantonsschule Aarau
Institute: Villanova University
Institute: Caltech, Pasadena
Institute: Space Research Organization of the Netherlands
Institute: Columbia University
Institute: Mullard Space Science Laboratory
Contact Email: guedel@astro.phys.ethz.ch
Abstract:
We have been conducting a comprehensive survey of stellar coronae with
the XMM-Newton Reflection Grating Spectrometers during the
commissioning, calibration, verification, and guaranteed time phases of
the mission, accompanied by simultaneous observations with the EPIC cameras
and, for several targets, with the radio VLA and/or the VLBA.
The principal aim of this project is threefold: i) To understand stellar
coronal structure and composition by studying systematics in the coronae
of stars with widely different levels of magnetic activity; ii) to investigate
heating and particle acceleration physics during flares, their role
in the overall coronal energy budget, and their possible role in the
quiescent stellar emission; iii) to probe stellar coronal evolution by studying
solar analogs of different ages. We report early results from this project.
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Manuscript submitted: 2001-Sep-3
"The Future of Cool-Star Astrophysics", 2003, Eds. A. Brown,
G. M. Harper, & T. R. Ayres.
Proceedings of 12th Cambridge Workshop on Cool Stars, Stellar Systems,
& The Sun,
© 2003 University of Colorado.