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Based on high contrast images obtained with the Gemini Planet Imager (GPI),we report the discovery of two point-like sources at angular separations of$\rho\sim0.18''$ and $\rho\sim0.80''$ from the stars HD 29992 and HD 196385. Acombined analysis of the new GPI observations and images from the literatureindicates that the source close to HD 29992 could be a companion to the star.Concerning HD 196385, the small number of contaminants ($\sim0.5$) suggeststhat the detected source may be gravitationally bound to the star. For bothsystems, we discarded the presence of other potential companions with $m>75$M$_{\rm Jup}$ at $\rho\sim0.3 - 1.3''$. From stellar model atmospheres andlow-resolution GPI spectra, we derive masses of $\sim0.2$ - $0.3$ M$_{\odot}$for these sources. Using a Markov-chain Monte Carlo approach, we performed ajoint fit of the new astrometry measurements and published radial velocity datato characterize the possible orbits. For HD 196385B, the median dynamic mass isin agreement with that derived from model atmospheres, whilst for HD 29992B,the orbital fit favors masses close to the brown dwarf regime($\sim0.08$M$_{\odot}$). HD 29992 and HD 196385 might be two new binary systems withM-type stellar companions. However, new high angular resolution images wouldhelp to definitively confirm whether the detected sources are gravitationallybound to their respective stars, and permit tighter constraints on the orbitalparameters of both systems.

High-contrast imaging of HD 29992 and HD 196385 with GPI