Models of the Intergalactic Gas in Stephan's Quintet

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Date/Time:Friday, 30 Oct 2009 from 4:10 pm to 5:10 pm
Location:Physics Hall 3
Phone:515-294-2298
Channel:Astronomy
Categories:Lectures
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Jeong-Sun Hwang, Iowa State University

Stephan's Quintet (hereafter SQ) is a compact group of galaxies which shows many interesting features of galaxy-galaxy and galaxy-intergalactic medium (IGM) interactions. One of the most striking features in SQ is the large-scale shock structure in its IGM seen in multiwavelength observations.

In order to study the large-scale morphology and dynamical evolution of the intergalactic gas in SQ, specifically the cause of the large-scale shock, we have performed numerical simulations using a smoothed particle hydrodynamics code.

In this talk I will review past studies of SQ explaining observational constraints on our model, present our preliminary model results, and compare the results to multiwavelength observations. Finally I will discuss some adjustments of our current model which will allow us to obtain better results.