Properties of the chromosphere-corona transition region in Capella.
Abstract
Analysis of recent ultraviolet observations of the Capella binary system (Alpha Aur) indicates a dense geometrically narrow chromosphere-corona transition region in the Capella system primary (G5 III) similar in many respects to a solar active region. An examination of the coronal energy balance, together with the coronal base pressure derived from the line fluxes, predicts a corona with a mean temperature of 1.2 million K and a large stellar wind consistent with observations.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- April 1976
- DOI:
- 10.1086/182085
- Bibcode:
- 1976ApJ...205L..39H
- Keywords:
-
- Binary Stars;
- Chromosphere;
- Coronas;
- Late Stars;
- Stellar Spectra;
- Ultraviolet Spectra;
- Astronomical Spectroscopy;
- Line Spectra;
- Solar Activity;
- Stellar Mass;
- Stellar Winds;
- Astrophysics