Oral Presentation

Revealing Accretion & Evolution of Heavily Embedded High-Mass Protostars

Author(s): Hiro Takami, T.-H. Hsieh, S.-N. Yu, N. Hirano, S.-Y. Liu et al.

Presenter: Hiro Takami (ASIAA)

The theoretical and observational understanding of the formation of high mass stars has remained a tricky puzzle. After a certain evolutionary phase accretion should be inhibited by radiation pressure. Disk accretion is regarded as the most promising formation scenario to resolve this issue. However, prior observations have not provided convincing evidence that accretion from the innermost disk region to the protostar is ongoing. Furthermore, the high extinction in these objects makes observing emission arising directly from the protostar and inner disk very challenging, leading to ambiguous estimates of their mass and evolutionary status. We will explain how spectroscopy with JWST and SPICA could produce a breakthrough for this research topic.