Speaker
Description
HD 135344 is a visual binary system that is best known for the protoplanetary disk around the secondary star. Various substructures, such as a cavity and spiral arms, point to ongoing planet formation, but putative planets have remained hidden. The circumstellar environment of the A-type primary star, on the other hand, has evolved faster as inferred from the absence of accretion and significant infrared excess. I will present the discovery of a young giant planet in orbit around HD 135344 A. This object is the youngest directly detected planet that has fully formed and orbits on solar system scales. I will show results on the first characterization of its atmosphere, bulk parameters, and orbit, based on 4 years of VLT/SPHERE and VLTI/GRAVITY data. I will also discuss the challenges that we faced to disentangle orbital from background motion. HD 135344 Ab provides a unique window to a young giant planet shortly after formation, without any obscuration by circumstellar dust. The HD 135344 binary system shows that planet formation and disk evolution timescales can differ for two coeval stars within the same environment.
| Talk category | NOVA Network 2 |
|---|---|
| Preference for a talk or poster | Talk |
