Crazy Coronal Abundances
Abstract
Closed magnetic structures in the solar corona show enhanced abundances of elements with first ionization potentials (FIP) less than 10 eV. Analyses of Chandra and XMM-Newton spectra of active stars show an inverse FIP bias in which the low FIP elements are underabundant and some high FIP elements are overabundant. We propose an explanation for both of these abundance anomalies.
- Publication:
-
The Future of Cool-Star Astrophysics: 12th Cambridge Workshop on Cool Stars, Stellar Systems, and the Sun
- Pub Date:
- October 2003
- Bibcode:
- 2003csss...12..869L
- Keywords:
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- Chromospheres;
- Coronae;
- Activity;
- Magnetic Fields