Outstanding planetary systems

I am involved in programs aiming at imaging well-known disk-bearing systems with unprecedented sensitivity and IWA, looking for new companions and/or associated signposts. To understand planet formation mechanisms, it is important to study systems at different evolutionary stages, starting with young stellar objects, such as, for instance, IM Lupi. I led comprehensive review of the challenge of proto-planet searches in star forming regions, focusing on this prototypical T Tauri star. Through their gaps and dynamical features, transitional disks show the first clear signs of planet formation. Using ALMA, our team recently discovered streamers of accretion within the gap of HD142567, pointing to a putative planet currently pumping material from the outer disk to the central star. Then comes debris disks which showcase the aftermaths of planet formation. After installing an L'-band VVC on NACO, we peered closer and deeper to β Pictoris than ever before, constrained the orbit of the planet, resolved and modeled the circumstellar disk at L' for the first time. We also observed HR8799 during the commissioning of the new L'-band vortex of the LBT and Keck, and all 4 planets are clearly detected, providing new astrometric data points, and excellent detection limits at small angles. I contributed to the confirmation of the planet around HD95086 by direct imaging, and my former PhD student J. Milli is currently leading a cutting-edge program to do imaging polarimetry of the famous debris ring of HR4796 with second-generation adaptive optics system SPHERE.

© Dimitri Mawet 2017