Calibration on the Sun for Stellar Magnetic Fields
Abstract
The intimate association between the surface magnetic fields and the Ca II K line emission known to exist on the sun, holds a promise for using this property to detect the presence of global magnetic fields on sun - like stars. We have obtained a large number of K line profiles over a variety of plages on the sun and related the 1A emission flux centred at the K3 minimum for these profiles with the corresponding values of the longitudinal component of the photospheric magnetic field. This provides a calibration for detecting and estimating the surface magnetic fields on stars that show K emission.
- Publication:
-
Cool Stars, Stellar Systems and the Sun
- Pub Date:
- 1987
- DOI:
- 10.1007/3-540-18653-0_105
- Bibcode:
- 1987LNP...291...47S
- Keywords:
-
- Solar K line emission - Plages - Stellar magnetic fields;
- Solar K line emission;
- Plages;
- Stellar magnetic fields