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Welcome!  My name is Emmet Golden-Marx.  I am a sixth year graduate student in the Boston University Astronomy Department.

e-mail: emmetgm at bu.edu
phone: 518-441-9404

My research interests focus on galaxy evolution and galaxy cluster formation. I am currently working with Prof. Elizabeth Blanton at BU studying galaxy clusters and galaxy evolution using bent, double-lobed radio sources to identify high-redshift galaxy clusters.  Bent, double-lobed radio sources are unique as the bent nature of the AGN implies some gaseous medium needed to bend the lobes.  Since the galaxies in a cluster form at the same cosmic time, we’ll  determine a redshift for the epoch of formation of the cluster using data from the Discovery Channel Telescope (DCT) and the Spitzer Space Telescope.  Given our sample selection (little or no optical identification in the Sloan Digital Sky Survey (SDSS)), we are searching for high redshift galaxy clusters.  From these observations, we’ll analyze the effects of active galactic nuclei (AGN) feedback on suppressing star formation in the central galaxy by analyzing the red sequence.

Additionally, I’m investigating bent, double-lobed radio sources that are found in poor galaxy groups, fossil groups of galaxies, or the interfilament medium.  Since most active galactic nuclei (AGN) feature radio lobes that are collinear, the bending of these radio lobes means that something must be responsible for the ram pressure necessary to bend the lobes.   While many of these bent, double-lobed radio sources are found in galaxy clusters, a fair amount are not.  From the existence of these bent, double-lobed radio sources, we can study the surrounding extragalactic environments.

I did my undergraduate work at Brown University (class of 2013).  During my time at Brown, I worked with Prof. Ian Dell’Antonio and received a NASA RI Space Grant (2012) and a Brown University Undergraduate Teaching and Research Award (UTRA, 2012).  Most of my research with Prof. Dell’Antonio focused on studying progenitors of fossil groups, working under the hypothesis that fossil groups form via a dry merger.

During summer 2012, I worked with Dr. Matt Ashby of the Harvard-Smithsonian Center for Astrophysics as an REU student on the Star Formation Reference Survey.  Most of my work centered on studying the star formation rates in the sample of galaxies in the local universe using far-Infrared observations from the Herschel Space Telescope with auxiliary observations from the AKARI satellite.  We used these observations, along with a wide range of other multi-wavelength observations to estimate an overall star formation rate for each galaxy.