2013A&A...559L..12A

The orbit of the giant planet discovered around β Pic is slightly inclined with respect to the outer parts of the debris disc, which creates a warp in the inner debris disc. This inclination might be explained by gravitational interactions with other planets. We aim to search for additional giant planets located at smaller angular separations from the star. We used the new L'-band AGPM coronagraph on VLT/NACO, which provides an exquisite inner working angle. A long observing sequence was obtained on β Pic in pupil-tracking mode. To derive sensitivity limits, the collected images were processed using a principal-component analysis technique specifically tailored to angular differential imaging. No additional planet is detected down to an angular separation of 0.2" with a sensitivity better than 5M_Jup. Meaningful upper limits (<10M_Jup) are derived down to an angular separation of 0.1", which corresponds to 2AU at the distance of β Pic.