Applied Math Seminar (David Nidever): Using Big Data to Understand Galaxies in our Neighborhood
- Thursday, December 6, 2018 from 3:10pm to 4:00pm
- Wilson Hall, 1-144 - view map
Applied Math Seminar:
Dr. David Nidever (MSU Physics and NOAO)
Title: Using Big Data to Understand Galaxies in our Neighborhood
How galaxies form and evolve remains one of the cornerstone questions in our understanding of the universe on grand scales. While much progress has been made by studying galaxy populations out to high reshifts, there is also much to be learned from near-field cosmology—that is, investigating nearby galaxies in detail using observations of "resolved" stars. I will highlight some recent results from two projects that are providing new insights into the structure and formation history of our Milky Way galaxy. First, I will discuss how the Apache Point Observatory Galactic Evolution Experiment (APOGEE) is using high-resolution spectroscopy of ~300,000 stars to revolutionize our understanding of the evolution of the Milky Way's stellar disk. Second, I will discuss the creation of the "crowd-sourced" NOAO Source Catalog that gives accurate photometric information for 3 billion objects and covers 3/4 of the sky. I will discuss the process of building this catalog and the challenges of analyzing its wealth of data.