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For the past 3 years we have been monitoring 62 K giant stars using precisestellar radial velocity (RV) measurements with the 2m Alfred Jensch telescopeof the Th\"uringer Landessternwarte Tautenburg (TLS). To probe the dependenceof planet formation on stellar mass by finding planets around intermediate-massgiant stars. We present high accuracy RV measurements of the K1.5 III star 42Dra and the K4 III star HD 139357. The wavelength reference for the RVmeasurements was provided by an iodine absorption cell placed in the opticalpath of the spectrograph. Our measurements reveal that the time series of theradial velocity of 42 Dra shows a periodic variation of 479.1 days. HD 139357shows periodic RV variations of 1125.7 days. Keplerian motion is the mostlikely explanation for the observed radial velocity variations for these stars.Thus the K giant stars 42 Dra and HD 139357 host extrasolar planets.

Planetary companion candidates around the K giant stars 42 Dra and HD 139357