Astronomy Department Calendar

Alex Green Pre-lim - "The Size-Linewidth Relation from Quiescent to Active Star Forming Regions in the LMC"

Event Type

Ceremony/Service

Sponsor

Department of Astronomy

Location

Kaler Classroon, Astronomy Building

Date

Apr 3, 2023   9:00 am  

Speaker

Alex Green

Views

22

Originating Calendar

Astronomy Department Events Calendar

Turbulent motions in giant molecular clouds (GMCs) have been observed for decades through the size-linewidth power-law relation. However, the observed scatter of this relation can be large, and questions about the sources of the energy feeding turbulence persist. Simulation results indicate that stellar feedback (processes including radiation pressure and winds) can supply the necessary energy in GMCs. I will present measurements of feedback effects on molecular gas in the Large Magellanic Cloud, the nearest star-forming galaxy to our own. This work uses sub-pc CO and ¹³CO ALMA maps of nine clouds exhibiting a wide range of star formation activity. I will also describe my plans to investigate the strength of feedback effects on gas measured in a larger range of size scales.