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

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

2002-04-23

arxiv.org/abs/astro-ph/0204385v1

Astron.Astrophys. 398 (2003) 203-212

Astronomy and Astrophysics

Astrophysics

10 pages, 9 figures, A&A accepted

Scientific paper

10.1051/0004-6361:20020529

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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