IPAC seminar - Kurt Soto (UCSB): "Shocked Circumgalactic Gas Around ULIRGs and it's Association with Galactic Winds"

Using Keck ESI we have found evidence for spatially extended shocks in a sample of 30 nearby (z=0.05 - 0.15) ultraluminous infrared galaxies, using optical emission line flux diagnostics. Some of this shocked gas appears to be part of a rotating disk, while some of the broader shocked gas appears to be part of an outflow. We also find trends of increasing stellar population age with radius, using the measurement of Hbeta absorption equivalent width. In this talk I will discuss the spatial distributions of these measurements, and what they tell us about the inflowing and outflowing gas in major mergers of gas rich galaxie