Dark Matter Halo Concentration and the Evolution of Spiral Structure in N-Body, Barred Spiral Galaxies

Author

Jazmin Esmeralda Berlanga Medina, University of Arkansas, FayettevilleFollow

Date of Graduation

12-2015

Document Type

Thesis

Degree Name

Master of Science in Physics (MS)

Degree Level

Graduate

Department

Physics

Advisor/Mentor

Daniel J. Kennefick

Committee Member

Julia D. Kennefick

Second Committee Member

Mark E. Arnold

Third Committee Member

Salvador Barraza-Lopez

Keywords

Pure sciences, Barred spiral galaxies, Cosmology theory, Dark matter, Galaxies, Galaxy evolution, N-body, Spiral galaxies

Abstract

Motivated by the evidence of relationships between pitch angle (the tightness of spiral arm structure in the disk), P, and various indicators of central mass concentration, as well as the theoretical relationship between halo mass concentration and the density of visible matter in the central part of the galaxy, we look at a possible relationship between P and cvir (the virial concentration of the dark matter halo) in N-body simulations of barred, spiral galaxies. We also look at the evolution of pitch angle over time in higher temporal resolution than any data currently available in the literature. We find that pitch angle structure is recurring, the overall distribution staying within a relatively narrow range. We do not find evidence for a relation between P and cvir.

Citation

Berlanga Medina, J. E. (2015). Dark Matter Halo Concentration and the Evolution of Spiral Structure in N-Body, Barred Spiral Galaxies. Graduate Theses and Dissertations Retrieved from https://scholarworks.uark.edu/etd/1439