Models for the active and quiescent regions on the RS CVn-type systemII Pegasi (HD 224085).
Abstract
The IUE observations of the RS CVn binary system II Pegasi obtained during the period 1981 October 1-7 were used to derive the emission measure distributions and to calculate transmission region models of the quiescent and plage (active) regions of II Peg. Active region models were calculated assuming area coverages of 10%, 6%, 3% and 1% of the visible hemisphere. These models are used to provide lower limits to the electron pressure in the quiescent and plage regions, which are compared with the available density diagnostics. The amount of mechanical energy deposition required to account for the observed radiative losses is very large.
- Publication:
-
Fourth European IUE Conference
- Pub Date:
- July 1984
- Bibcode:
- 1984ESASP.218..351L
- Keywords:
-
- Astrophysics;
- Binary Stars;
- Data Acquisition;
- Stellar Atmospheres;
- Stellar Models;
- Data Correlation;
- Electron Density Profiles;
- Faculae;
- Iue;
- Radiative Transfer;
- RS CVn Stars:Stellar Activity;
- RS CVn Stars:UV Spectra;
- Stellar Activity:Models;
- Stellar Activity:RS CVn Stars;
- UV Spectra:RS CVn Stars