Oral Presentation

Protostellar Jet Launching and the Corresponding Changes in the Chemical Composition in the Disk

Author(s): Somnath Dutta (ASIAA, Taiwan) Chin-Fei Lee (ASIAA, Taiwan)

Presenter: Somnath Dutta (ASIAA, Taiwan)

Protostellar jets are the most intriguing characteristics in the magnetized, accreting young stellar objects. The jet appears from the protostellar disk surface and removes excess angular momentum, therefore, playing a vital role in the formation and evolution of the circumstellar disk and planets within it. In this presentation, I shall briefly introduce the current theory of jet launching. Then I shall present our recent results on jet/outflow from the high spatial resolution and high sensitivity observations with Atacama Large Millimeter/submillimeter Array (ALMA), which is currently the largest radio interferometry array on Earth. In particular, I shall probe the dominant mechanism of jet launching, whether the jet launches from the inner disk (i.e., X-wind) or a more extended disk region (i.e., disk-wind). Finally, I shall describe the possible connection of the jet with the accretion burst and formation of complex organic molecules within the disk, which would be the chemical composition of future planets.