University of Connecticut

Events Calendar

Astronomy Seminar

Wednesday, January 22, 2020
2:00pm – 3:00pm

Storrs Campus

Dr. Matt Orr, California Institute of Technology

Spatially Resolved Star Formation in Cosmological Zoom-in Simulations: Understanding the Role of Feedback in Scaling Relations

Cosmological simulations have evolved over the past two decades to match ever more restrictive constraints on galaxy formation and evolution. For much of this time, simulations struggled to match global properties of observed galaxies: stellar mass--halo mass relations, integrated star formation rates--gas masses (integrated Kennicutt-Schmidt), etc. However, the latest generation of zoom-in simulations is just now able to spatially resolve many of these galaxy scaling relations. In my talk, I will discuss several aspects of spatially resolved galaxy scaling relations in the FIRE (Feedback In Realistic Environments) suite of cosmological zoom-in simulations, among them: Kennicutt-Schmidt, star formation rate profiles, and line of sight gas velocity dispersions correlating with star formation rates. These projects all relating back to the idea that stellar feedback has a central role to play in the emergence of many of these galaxy scaling relations. I will explore how modern cosmological simulations like FIRE, and associated analytic models, are moving closer to observations, both in their results and their ability to model observables directly.


Prof. C. Battersby

Physics Department (primary), College of Liberal Arts and Sciences, UConn Master Calendar

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