Highlights of the 120 Nights NACO-ISPY Direct Imaging Survey

The NACO-Imaging Survey for Planets around Young stars (NACO-ISPY) is a coronagraphic, 120 nights GTO program at the VLT. It is designed to deeply image around 230 young (< 100 Myr) stars in the L’-band (3.8 μm), out of which over 100 have been observed so far. The targets are carefully selected out of two categories: protoplanetary disks (PPD) and debris disks with hints of a possible perturber. A main goal of the survey is thus to determine the occurrence rate of giant planets and brown dwarfs in systems with a disk and to constrain planet formation models.

One of the highlights presented is a ~2 Myr young system. The system consists of a star hosting a massive disk and is very likely orbited by 2 newly discovered brown dwarfs. To confirm and characterize the companions’ and disk’s nature, a spectrum with SPHERE as well as polarimetric differential imaging (PDI) observations with the Gemini Planet Imager (GPI) instrument are scheduled. With an age of only 2 Myr, the brown dwarfs would be the youngest bound ones found to date. This system might thus allow us to get a glimpse of very early, ongoing formation of substellar companions.

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