Dr. Serena Viti

University of Florida Astronomy Colloquium - April 8th, 2015

Determining the physical and chemical conditions of AGN and starburst galaxies

It is now well established that chemistry in external galaxies is rich and complex. In this talk I will show how molecular emission from AGN/starburst galaxies can be used to explore and characterize the physical conditions and energetics of these galaxies, as well as, possibly, their evolutionary status. I will present examples of the chemical and radiative transfer models that have been developed in recent years to tackle the often unresolved (spatially and spectrally) extragalactic molecular emission. I will then show recent applications of such models in nearby galaxies and how to make molecules into powerful diagnostics of the evolution and distribution of molecular gas.