Date of Graduation
5-2016
Document Type
Thesis
Degree Name
Bachelor of Science
Degree Level
Undergraduate
Department
Physics
Advisor/Mentor
Kennefick, Julia
Committee Member/Reader
Kennefick, Julia
Committee Member/Second Reader
Kennefick, Daniel
Committee Member/Third Reader
Ward, Barry
Committee Member/Fourth Reader
Rulli, Richard
Abstract
I extend the empirical correlation between central supermassive black hole mass M and spiral arm pitch angle P in spiral galaxies to intermediate redshifts using a sample of 14 type 1 Seyfert galaxies. Nuclear black hole masses are measured from the widths and luminosities of the broad Hβ and MgII emission lines, and pitch angles are measured using two independent image analysis techniques. I find the best-fit relation log(M/M☉) = (8.31 ± 0.28) − (0.058 ± 0.016)P, which indicates little to no evolution compared to the published M-P relation for local spirals.
Citation
Jones, L. H. (2016). Extending the Supermassive Black Hole Mass-Pitch Angle Relation to Moderate Redshifts. Physics Undergraduate Honors Theses Retrieved from https://scholarworks.uark.edu/physuht/5