Title: Galaxy assembly across cosmic time

Speaker: 彭影杰 研究员，北京大学科维理天文与天体物理研究所

Time & Place: 周四, 2019.6.13下午2:30-4:30, 海韵教学楼504

Abstract: I will discuss galaxy assembly across cosmic time in four key aspects: star formation, quenching, stellar mass function evolution and galaxy-halo connection, in both observation and theory. I will show new evidences from multi-wavelength observations from optical to radio that demonstrate the detailed quenching process of galaxies, which provides stringent constraint on the physical mechanism of quenching. I will discuss difficulties in reconciling observed star formation properties of the galaxy population and their mass function evolution, as well as difficulties in simulations and models to reproduce observations. I will also discuss plans to explore galaxy assembly with forthcoming major observing facilities.

About the speaker: Yingjie Peng is an astronomer at the Kavli Institute for Astronomy and Astrophysics (KIAA), Peking University. He received his bachelor degree from BNU in 2005, PhD from ETH Zurich in 2012 with the award of ETH Medal, and then he became a research associate at Cavendish Laboratory and a postdoctoral fellow at Kavli Institute for Cosmology, University of Cambridge. He is a fellow of Homerton College, University of Cambridge since 2013. He joined KIAA in 2015. In 2015, he was awarded the RAS Research Fellowship by the Royal Astronomical Society, UK. In 2016 he was awarded the MERAC Prize in Observational Astrophysics by the European Astronomical Society (EAS). His research interests are observational cosmology, studying galaxy formation and evolution through cosmic time. He have been actively involved in many major observational projects, using ground-based and space-based facilities, including COSMOS, zCOSMOS, SINFONI-SINS, ZENS, KMOS-CLEVER, SDSS V, MOONS and MSE. He has more than 100 publications in refereed journals with >8000 citations.