Cool Stars 14 - Submitted Abstract # 272
This version created on 05 October 2006

A comparison of Fe XVIII and Fe XIX, EUV to X-Ray Line Ratios of
Active Stars using Chandra Grating Observations


Priya Desai, Harvard-Smithsonian Center for Astrophysics
Nancy Brickhouse, Harvard-Smithsonian Center for Astrophysics
Ronnie Hoogerwerf, Harvard-Smithsonian Center for Astrophysics
Andrea Dupree, Harvard-Smithsonian Center for Astrophysics

Recent Fe XVIII and Fe XIX line measurements of Capella (Desai et al.
2005) have shown significant discrepancies between modern theory and
observations for the X-ray and EUV resonance lines.  We investigate
these lines further by analyzing a sample of six active stars (Algol,
AB Dor, Eps Eri, Capella, HR 1099, and Lambda And) observed with the
Low Energy Transmission Grating Spectrometer.  The sample covers a
range of coronal temperatures and will help shed light on these
puzzling disagreements.

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