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Physics Colloquium

Tracing Galaxy Ecosystems—Galaxy Evolution and the
Gas That Shapes it

Presented by Sarah Tuttle, University of Washington

Galaxy evolution is a crucial part of understanding how the baryons of our universe are distributed and transported. Galaxies are also difficult remote laboratories to work in because of the many interacting processes that govern their resulting morphology, because of their evolution through time, and because of their distance. I will present several sets of data we are using to pick apart processes that are shaping interactions between gas and galaxies, as well as the instruments I have built to study them. I will first show an unusual local (z < 0.05) sample of galaxies with blue bulges and red disks that are found in a variety of environments. These local galaxies are observed both with LRS2 at the HET and MaNGA (a part of SDSS-IV). I will also show early work with a collection of Lyman alpha emitters (LAEs) with extended emission highlighting likely gas reserves at higher redshifts (2 < z < 4). Both of these experiments highlight different ways we can pursue the full baryonic accounting for galaxy systems, and I will detail the upcoming SDSS-V projects that will add to our understanding of these galaxy ecosystems in the Milky Way and beyond. I will briefly highlight both integral field spectroscopy systems as well as the robotic fiber positioners we are taking part in building for SDSS-V.

Monday, February 4, 2019 at 3:30pm to 4:30pm

Science and Engineering Research Facility (SERF), 307
1414 Circle Dr, Knoxville, TN 37996

Event Type

Lectures & Presentations




Current Students, Faculty & Staff



Physics and Astronomy

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Department of Physics and Astronomy

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