演講資訊

摘要：

The formation process of exoplanets is one of the most challenging mystery of modern astronomy. Imaging of exoplanets is mostly obtained at optical and near infrared (NIR) toward disks where dense gas has been dissipated. To test theories, it is essential to observe young exoplanets, still embedded in their native proto-planetary disks, for which mass accretion is currently ongoing. Surrounded by a large transition disk with a central cavity of radius of ~ 100 au, the AB Aurigae (hereafter AB Aur) disk likely harbors a nascent planetary system with two proto-planets based on several observations from the millimeter (mm) range to the IR. In my previous study of the molecular spirals (0.14", 12CO 2-1) within the AB Aur dust cavity, the existence of an embedded object at a radius of 30 au (P1) and an additional object at a radius larger than 90 au (P2) have been suggested. I this talk, I will present the latest evidences of the embedded objects at P1 and P2. Limitations of such kind of studies will be discussed.