Date of Graduation
Master of Science in Space & Planetary Sciences (MS)
Paul M. Thibado
Second Committee Member
Claud H. Sandberg Lacy
Third Committee Member
Pure sciences; Agn; Black hole; Broad line; Mgii; Pitch angle; Spiral galaxy
As we continue to investigate and ponder the heavens, we have come to realize the presence of highly energetic gravitational wells at the center of all galaxies. These supermassive black holes at a galaxies nucleus formed in the company of the other features making up the galaxy, particularly spiral arms. With nearby galaxies showing a relationship between the spiral arm pitch angle and that central mass, here we push that relationship out to distances of redshift one. With three galaxies at this distance we find that they also hold to the same relationship of tighter spiral arms corresponding to more massive central black holes. We find that these three galaxies near a redshift of one also fit the equation log M/M⊙ = (8.21 ± 0.16) − (0.062 ± 0.009)P given by Berrier et al. (2013) for nearby spiral galaxies. Further investigation of higher signal to noise spectroscopic observations will increase this confidence and demonstrate the robustness of the M − P relationship at greater distances.
Hughes, John Adam, "The Mass-Pitch Angle Relation for Three High Redshift Active Galaxies Selected from the GOODS Field" (2015). Theses and Dissertations. 1400.