A Study of the Coronal Plasma in RS CVn binary systems: HR 1099 and co.
Abstract
XMM-Newton has been performing comprehensive studies of X-ray luminous RS CVn binary systems in its calibration and guaranteed time programs. We present results from ongoing investigations in the context of a systematic study of coronal emission from RS CVns. We concentrate here on coronal abundances and investigate the abundance pattern in RS CVn binaries as a function of activity and average temperature. We find a transition from an Inverse First Ionization Potential (FIP) effect towards an absence of a clear trend (no FIP) in intermediately active RS CVn systems. This scheme fits well into the long-term evolution from an IFIP to a FIP effect found in solar analogs. We further study variations in the elemental abundances during a large flare.
- Publication:
-
Stellar Coronae in the Chandra and XMM-NEWTON Era
- Pub Date:
- December 2002
- DOI:
- 10.48550/arXiv.astro-ph/0109264
- arXiv:
- arXiv:astro-ph/0109264
- Bibcode:
- 2002ASPC..277...65A
- Keywords:
-
- Astrophysics
- E-Print:
- to appear in 35th ESLAB Symposium "Stellar Coronae in the Chandra and XMM-Newton Era", eds. F. Favata &