Using Fe XXII to Determine the Electron Density of Stellar Coronae

Details Using Fe XXII to Determine the Electron Density of Stellar Coronae Using Fe XXII to Determine the Electron Density of Stellar Coronae

Feb 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010head...11.1704l&link_type=abstract

American Astronomical Society, HEAD meeting #11, #17.04; Bulletin of the American Astronomical Society, Vol. 41, p.683

Astronomy and Astrophysics

Astronomy

Scientific paper

Lines from Fe XXII, both in the EUV and X-ray region, are known to be sensitive to the electron density and have in recent years been used as diagnostics of stellar coronae, such as AB Dor and Ex Hya. We have recently obtained spectral data from laboratory sources in which the electron density is known either from non-spectroscopic means or from K-shell density diagnostics. The densities of the laboratory sources range from 5x1011 cm-3 to 5x1014 cm-3. The measurements have been used to test the spectral models underlying the Fe XXII density diagnostic line ratios.
This work was supported by the NASA APRA program and the DOE General Plasma Science program.

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