Fourteenth Annual Grant Winners 2013-2014
A Catalog of Edge-On Spiral Galaxies and their 3-D Structure
Don Rosenblum, Ph.D. (FAR)
Faculty and Students
Stefan J. Kautsch, Ph.D. (FAR)
Chau Phung (FAR)
The proposed research aims to create the largest modern catalog of spiral galaxies with measured properties of their three-dimensional (3-D) structure. The structural properties will include parameters of the stellar disks, bulges, and dust medium. The catalog consists of visually confirmed, true edge-on disk galaxies, which will be selected from the Sloan Digital Sky Survey. The galaxies will be classified into distinct morphological types using a computer algorithm. The structural parameters will be measured using 3-D decomposition techniques, which involve radiation transfer models in order to account for the dust distribution in the galaxies. The ultimate goal of this research is to include an extra dimension--the vertical scale height of stellar disks and bulges--to the scaling relations for disk galaxies and their Dark Matter halos. The scaling relations will provide a framework for testing cosmological models of disk and bulge formation. In combination with growing, multi-wavelength data sets coming from ongoing large surveys, the catalog will provide a solid background for advanced structural studies of spiral galaxies.