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High-resolution X-ray spectroscopy of Procyon by Chandra and XMM-Newton

A. J. J. Raassen·R. Mewe·M. Audard·M. Guedel·E. Behar·J. S. Kaastra·R. L. J. van der Meer·C. R. Foley·J. -U. Ness
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Abstract

We report the analysis of the high-resolution soft X-ray spectrum of the nearby F-type star Procyon in the wavelength range from 5 to 175 Angstrom obtained with the Low Energy Transmission Grating Spectrometer (LETGS) on board Chandra and with the Reflection Grating Spectrometers (RGS) and the EPIC-MOS CCD spectrometers on board XMM-Newton. Line fluxes have been measured separately for the RGS and LETGS. Spectra have been fitted globally to obtain self-consistent temperatures, emission measures, and abundances. The total volume emission measure is ~4.1 x 10e50/cm3 with a peak between 1 and 3 MK. No indications for a dominant hot component (T > 4 MK) were found. We present additional evidence for the lack of a solar-type FIP-effect, confirming earlier EUVE results.

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A. J. J. Raassen, R. Mewe, M. Audard, M. Guedel, E. Behar, J. S. Kaastra, R. L. J. van der Meer, C. R. Foley, J. -U. Ness. 2002-04-23. High-resolution X-ray spectroscopy of Procyon by Chandra and XMM-Newton. https://doi.org/10.1051/0004-6361%3A20020529

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