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      1. 學術活動
        天文
        Tracing the formation of “other worlds” in circumstellar disks around newborn stars
        瀏覽次數:
        主講人: Ruobing Dong(Univ. of Victoria)
        地點: KIAA-auditorium
        時間: Thursday, June 24,4:00PM-5:00PM
        主持 聯系人: Greg
        主講人簡介: Dr. Dong is an assistant professor and a Sloan Research Fellow at the Department of Physics and Astronomy at the University of Victoria in Canada. He obtained a Ph.D. in astrophysics from Princeton University in 2013 and a B.S. in physics from Peking University in 2008. He was a NASA Hubble fellow at UC Berkeley from 2013 to 2016, then a Bok fellow at the University of Arizona from 2016 to 2018.

        Planets form in gaseous protoplanetary disks surrounding newborn stars. As such, the most direct way to learn how they form from observations, is to observe them forming in disks. In the past, this was difficult due to a lack of observational capabilities, and planet formation was a subject of theoretical research. Now, thanks to a fleet of new instruments with unprecedented resolving power that have come online in the past decade, we have started to unveil features in resolved images of protoplanetary disks, such as gaps and spiral arms, that are likely associated with embedded (unseen) planets. By comparing observations with theoretical models of planet-disk interactions, the properties of still forming planets may be constrained. Such planets help us test planet formation models. I will introduce the current status of this field, and highlight some of the latest developments.


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