Ca II H and K emissions in binaries. I. Intensity-period relation.
Abstract
An analysis of intensities of CaII emission K line in spectroscopic binaries is made. The investigation is restricted to giants and supergiants of spectral types G and K. A correlation between K line intensity and period is found. Intensification of chromospheric activity as a function of orbital elements of binaries is discussed.
- Publication:
-
Acta Astronomica
- Pub Date:
- 1977
- Bibcode:
- 1977AcA....27..225G
- Keywords:
-
- Binary Stars;
- Calcium;
- Chromosphere;
- H Lines;
- K Lines;
- Stellar Spectra;
- Emission Spectra;
- Giant Stars;
- Supergiant Stars;
- Astrophysics