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Physics Conference Room, SB B326
Coffee starts at 12:00 PM and talk starts at 12:15 PM
Sep '17
David Petiteau  -  Wednesday, September 6, 2017
Sep '17
Viviana Acquaviva  -  Monday, September 25, 2017
Understanding the Universe through distant galaxies
New York City College of Technology
ABSTRACT: Understanding the physical properties of galaxies and their evolution through cosmic time means learning more about the Hubble expansion, gravity, and the physical mechanisms that regulate the growth of structures. My work focuses on developing and using better tools to extract maximal information from ongoing and future data from large galaxy surveys, such as CANDELS and LSST. I will present my efforts at improving our ability to determine galaxy properties through Spectral Energy Distribution (SED) fitting. I will introduce GalMC and SpeedyMC, the Markov Chain Monte Carlo algorithms for SED fitting I created, and show how they can be used to recover the age, mass, dust content, metallicity and star formation history of galaxies, as well as to jointly determine photometric redshifts and SED fitting parameters. If time allows it, I will describe the science goals of the Hobby Eberly Telescope Dark Energy eXperiment (HETDEX), which is set to discover several hundred thousand Lyman Alpha Emitting galaxies at 2 < z < 3.5 and use them to shed light on the behavior of dark energy and gravity in this largely unexplored redshift range, and summarize our recent efforts in optimizing the sample selection using Bayesian statistics and machine learning techniques.
Oct '17
Sarang Gopalakrishnan  -  Monday, October 2, 2017
College of Staten Island
Oct '17
Stephen Arnold  -  Monday, October 23, 2017
Opto-Mechanics: Fabrication of Nano and Micro-Optic Sensors
Polytechnic Institute of New York University
Nov '17
Michael Mirkin  -  Monday, November 13, 2017