UCF AVS Astrochemistry Webinar: Dr. Michel Nuevo скачать в хорошем качестве

UCF AVS Astrochemistry Webinar: Dr. Michel Nuevo

The Formation of the Building Blocks of Life in Astrophysical Environments Laboratory astrochemistry experiments have shown that complex organic molecules can form under astrophysical conditions from ice mixtures containing simple species such as H2O, CO, CO2, CH3OH, NH3, etc., when they are subjected to ionizing radiation (UV photons, energetic particles) at low temperatures (less than 80 K). Organics formed in these experiments include compounds of great interest for astrochemistry and astrobiology such as amino acids, nucleobases, and sugar derivatives. Although most of these organic compounds have not been conclusively observed in astrophysical environments, they have been detected in carbonaceous meteorites. This strongly indicates that molecules of astrobiological significance and their precursors formed under extraterrestrial, non-biological conditions, in the dense molecular cloud from which our Solar System was born, and/or in the protosolar nebula during its formation. The presence of organic materials of biological importance in cold Solar System bodies, such as asteroids and comets, suggests that these compounds played a significant role in the origin of life on Earth. After a general overview of the field of laboratory astrochemistry, I will discuss the formation of organic species under astrophysically relevant conditions, from the UV irradiation of ice mixtures at low temperature. In particular, I will focus on the formation of organics of astrobiological interest such as amino acids, nucleobases, and sugar derivatives. Speaker Biography: Michel Nuevo grew up in France, where he studied physico-chemistry and astrophysics at the Universities of Orsay and Pierre et Marie Curie, in Paris. He obtained his master degrees in both Molecular Physico-Chemistry and Instrumentation in Astrophysics in 2001, and obtained his Ph.D. degree from the University of Orsay in 2005, doing his research at the Institut d’Astrophysique Spatiale in Dr. Louis d’Hendecourt’s laboratory. After his Ph.D., he was a postdoc at the Graduate Institute of Astronomy and the Department of Physics of the National Central University in Taiwan for 2 years, where he worked with Drs. Wing-Huen Ip and Tai-Sone Yih. Finally, he arrived at NASA Ames in Dr. Scott Sandford’s Astrochemistry Laboratory in 2007, where has started as an NPP postdoc fellow. He has been working in the Astrochemistry Laboratory team since then, now as a BAER Institute Research Scientist since 2013. Thursday, June 11, 2020