Comments: 4 pages, 5 figures, to appear in the Proceedings of the ESO Workshop "Precision Spectroscopy in Astrophysics", eds. L. Pasquini, M. Romaniello, N.C. Santos, A. Correia
We present the results of radial velocity measurements of two samples of active stars. The first sample contains field G and K giants across the Red Giant Branch, whereas the second sample consists of nearby young stars (d < 150 pc) with ages between 10 - 300 Myrs. The radial velocity monitoring program has been carried out with FEROS at 1.52 m ESO telescope (1999 - 2002) and continued since 2003 at 2.2 m MPG/ESO telescope. We observed stellar radial velocity variations which originate either from the stellar activity or the presence of stellar/substellar companions. By means of a bisector technique we are able to distinguish the sources of the radial velocity variation. Among them we found few candidates of planetary companions, both of young stars and G-K giants sample.
@article{arxiv.0704.2145,
title = {Planets around active stars},
author = {J. Setiawan and P. Weise and Th. Henning and A. P. Hatzes and L. Pasquini and L. da Silva and L. Girardi and O. von der Luhe and M. P. Dollinger and A. Weiss and K. Biazzo},
journal= {arXiv preprint arXiv:0704.2145},
year = {2009}
}