Chromospheric activity in late-type stars
Abstract
We have obtained high resolution optical spectra for a sample of more than 190 early- and mid-type M-stars with FOCES (Calar Alto) and FEROS (La Silla). These data will advance our understanding of the rotation-activity relation over the mass range where stars become fully convective. From our observations we determined the Hα luminosity, which is directly connected to chromospheric activity. We present preliminary results from our sample.
- Publication:
-
15th Cambridge Workshop on Cool Stars, Stellar Systems, and the Sun
- Pub Date:
- February 2009
- DOI:
- 10.1063/1.3099202
- Bibcode:
- 2009AIPC.1094..668J
- Keywords:
-
- 96.60.Na;
- 97.10.Jb;
- 97.80.Jp;
- Chromosphere;
- Stellar activity;
- X-ray binaries;
- chromosphere;
- star formation;
- X-ray binary stars