Past Events

Abstract

Contrary to conventional expectations, complex organic matter is now found throughout the Universe: in Solar System objects, in old stars, in the diffuse interstellar medium, and even in distant galaxies. In this talk, we will address the chemical composition and origin of extraterrestrial organic matter. Specifically, we will talk about how infrared spectroscopic observations in space have revealed the synthesis of aromatic and aliphatic compounds during the late stages of stellar evolution and how these organics may have chemically enriched the early Solar System.

About the Speaker

Prof. Sun Kwok is best known for his theory on the origin of planetary nebulae and the death of sun-like stars. His recent books include Organic Matter in the Universe (Wiley, 2011), Physics and Chemistry of the Interstellar Medium (University Science Books, 2007), Cosmic Butterflies (Cambridge, 2001), The Origin and Evolution of Planetary Nebulae (Cambridge, 2000). He has served as the Canadian Principal Investigator of the Odin Mission, the second submillimeter-wave telescope in space. He currently serves as the Vice President of Division VI: Interstellar Matter of the International Astronomical Union and the Vice President of Commission 51: Bioastronomy of the IAU.

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Physics colloquium series is organized to introduce cutting edge researches and new development in physics, designed to be suitable to graduate and undergraduate students, and also to scientists working on different fields. Each colloquium will generally start with an extensive introduction of the background of the field, followed by forefront research topics and results. The colloquium will serve as an education forum for students and laymen alike, and also serve as a platform for exchange and update their knowledge of various branches of physics among academic staff members.

Coffee and tea will be served 20 minutes prior to the Colloquium.