Analysis of EUV Spectra of Cool Stars
Abstract
Spectrometers on board EUVE are obtaining stellar spectra in the extreme ultraviolet region that contain a wealth of unique information about atmospheres of cool stars. EUVE spectra of the RSCVn binary system Capella (HD 34029; G8 III + G0 III) are presented in this session (Dupree, Doschek, Green, & Raymond, EUVE Spectra of Capella (Alpha Aurigae), Bull. AAS, this volume). In addition, updated calculations of coronal ionization equilibrium (Brickhouse, Raymond, & Smith, Bull. AAS, this volume) increase the confidence of the analysis. These spectra and calculations will be used to illustrate major scientific questions that can be addressed through EUV spectroscopy: what is the distribution of temperature and emission measure in the atmosphere of the system? what are the atmospheric densities? are non-equilibrium ionization processes present? is there evidence for a stellar wind?
- Publication:
-
American Astronomical Society Meeting Abstracts #182
- Pub Date:
- May 1993
- Bibcode:
- 1993AAS...182.3807D