Watch: July 21 Dr. Liangliang YU: Potential Sublimation-driven mechanisms for Active Asteroids
Speaker: Dr. Liangliang YU
21 July 2022
3 pm GMT+8
During the past 30 years, our knowledge on solar-system small bodies has been greatly improved since the discovery of active asteroids, from which we realized that asteroids and comets are not extremely different objects. Some active asteroids, if the activities are driven by volatile sublimation, could be the objects that are staying at a situation of transition between comet and asteroid. Therefore, looking for active asteroids, and additionally finding the sublimation-driven ones, would provide key information for us to understand the long-term evolution of comets and asteroids, and could even throw light on the early formation and evolution of planetesimals at the stage of protoplanetary disk.
About the Speaker:
Liang-Liang Yu got the Phd degree in 2018 at the Macau University of Science and Technology (MUST) on a topic of thermophysics of small bodies. Then he continued researching on active asteroids and main belt comets in MUST as a postdoctoral researcher for two years. In 2020, he was offered a position as an assistant professor at the State Key Laboratory of Lunar and Planetary Science, MUST in Macau. Now he is doing researches on multiple aspects of solar-system small bodies and interstellar objects, especially the active ones, where his main interests are exploring the mechanisms that drive the observed activities.
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