Hi! I am Bian, Yuan (边缘), a PhD student at The University of Texas at Dallas. Previously, I graduated from Xiamen University. I study compact dwarf galaxies, bursty star formation, environmental effects, the baryon cycle, stellar feedback and the relations among them using cosmological simulations and semi-analytical models. Specifically, I am interested in the topics of galaxy chemical evolution, galaxy formation history, extreme galaxies, and the nature of dark matter. Although I spend most of my time focusing on theoretical work, I also pay attention to observational data and sometimes combine them with simulations.
📝 Publications
ApJL 979 L33
Yuan Bian, Min Du, Victor P. Debattista, et al.
- It addresses and resolves the longstanding question of how outliers in the metallicity-stellar mass scaling relation can attain such high metallicity for their mass.
- It challenges the prevailing assumption that metal-rich Compact Stellar Systems (CSSs) are primarily formed through tidal stripping. We provide a clear understanding of how the recently identified mechanism of ram pressure confinement enriches galaxies within a cosmological framework, particularly highlighting its role in rapid metal enrichment.
- It provides evidence that M32 and similar systems are more likely to have formed through intense star formation rather than gradual tidal stripping. We offer a realistic and testable model that explains the formation and properties of the M31-M32 system, aligning with observed characteristics such as the tidal debris around M31.
💬 Talks
- 2023.08, 2023 Annual Meeting of Chinese Astronomical Society, Weihai, China.
- 2023.05, The 25th Chinese Astronomical Society Meeting: Guoshoujing Symposium on Galaxies and Cosmology, Huangshan, China.
- 2023.03, Shanghai Astronomical Observatory-Xiamen University Astrophysics Symposium, Xiamen, China.