TMT IRIS Postdoc, University of California, San Diego


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I'm Greg Walth, the TMT IRIS postdoc, part of the Optical & Infrared Laboratory in the Center for Astrophysics and Space Science at UC San Diego. I study gravitationally lensed galaxies in the fields of massive galaxy clusters. In particular, I am interested in the formation and evolution of dusty, star-forming galaxies detected with Herschel.

Currently, I work with Shelley Wright on developing the IRIS pipeline for the Thirty Meter Telescope (TMT). IRIS is a near-IR IFU which will work at the diffraction limit of TMT.

I am also working on spectroscopic follow-up (both optical and near-infrared) of Herschel selected galaxies to determine their redshift and learn more about their star forming properties. The Herschel sample I'm working with comes from the Herschel Lensing Survey (HLS) which surveyed nearly 600 massive galaxy clusters.