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We present the discovery of substellar-mass companions to three giant starsby the ongoing Penn State-Toru\'n Planet Search (PTPS) conducted with the 9.2 mHobby-Eberly Telescope. The most massive of the three stars, K2-giant HD240237, has a 5.3 MJ minimum mass companion orbiting the star at a 746-dayperiod. The K0-giant BD +48 738 is orbited by a > 0.91 MJ planet which has aperiod of 393 days and shows a non-linear, long-term radial velocity trend thatindicates a presence of another, more distant companion, which may have asubstellar mass or be a low-mass star. The K2-giant HD 96127, has a > 4.0 MJmass companion in a 647-day orbit around the star. The two K2-giants exhibit asignificant RV noise that complicates the detection of low-amplitude, periodicvariations in the data. If the noise component of the observed RV variations isdue to solar-type oscillations, we show, using all the published data for thesubstellar companions to giants, that its amplitude is anti-correlated withstellar metallicity.

Substellar-Mass Companions to the K-Giants HD 240237, BD +48 738 and HD 96127