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Paper: Precision Radial Velocities of Active Stars
Volume: 294, Scientific Frontiers in Research on Extrasolar Planets
Page: 55
Authors: Els, S. G.; K├╝rster, M.; Endl, M.; Hatzes, A. P.; Porto de Mello, G.
Abstract: A search for line profile variations correlated with stellar radial velocities (RVs) is presented. The goal is to develop a correction method of RVs for activity effects enabling the search for planets orbiting active, i.e., young stars. The Coude Echelle Spectrometer (CES) at the ESO 3.6m telescope with its high spectral resolution (R=220,000) has been used to monitor some active stars for changes in their RVs and absorption line profiles. In the case of HD 166435 it is demonstrated that a correction of the measured RVs for line profile variations is feasible and improves the RVs scatter down to the measurement precision.
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