Chromospheric activity in G and K giants: the spectroscopic data base
Abstract
I present high-resolution CCD spectra of CaII H and K emission lines of 59 evolved stars of spectral type G and K and luminosity Class III, III-IV, and IV. This includes active stars like RS CVn binaries but also active and inactive single stars. Most of the objects were observed for the first time and several were discovered to be chromospherically active. Spectra for ten stars of luminosity Class V are also given.
- Publication:
-
Astronomy and Astrophysics Supplement Series
- Pub Date:
- March 1994
- Bibcode:
- 1994A&AS..103..413S
- Keywords:
-
- STARS: ACTIVITY;
- STARS: CHROMOSPHERES;
- STARS: LATE-TYPE;
- STARS: GIANT