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Radial migration is an important process in the evolution of the Galactic disk. It can lead to stars moving away from their original birth positions, thus making it more challenging to trace the evolution of the Galaxy through the chemical signatures of the stars. In this talk, we will introduce a quantitative approach to studying radial migration: using stellar ages and metallicities combined with Galactic chemical evolution models to reduce the birth radii of stars, and thus determine their radial migration distances. We will present how radial migration explains, for example, the radial metallicity gradient of open clusters, and many other questions. This research has important implications for studies on exoplanet characterization, as metallicity influences both stellar migration distances and various planetary parameters.
Haopeng Zhang is currently pursuing his PhD at the National Astronomical Observatories, CAS, collaborating with Yuqin Chen. He completed his bachelor's degree at Beijing Normal University in 2018. His PhD project is to study the role of radial migration on the Galactic disk with spectroscopic survey data. His research interests include Galactic archaeology, stellar evolution, and exoplanets.
Combined video record by Yiwei Bao & Zhuowen Zhang & Haopeng Zhang & Haojie Hu:
https://vshare.sjtu.edu.cn/open/b756cc92a402676e9b6aa4de41c9f9a0a386bd58ef030570b1d75a2a0150ee77