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On the Kinematics of Galaxies and Associated QSO Absorption Systems


Kollmeier, Juna Ariele (2000) On the Kinematics of Galaxies and Associated QSO Absorption Systems. Senior thesis (Major), California Institute of Technology. doi:10.7907/z006-x990.


The methods available for studying galaxies directly, both individually and as a class of objects, limit astronomers to certain regions of parameter space. Since most observational techniques are rooted in the collection and analysis of photons, there is always the danger of preferentially studying those objects for which this information is more readily obtained. Such selection effects can dramatically alter the physical picture one deduces. For example, detailed studies of galaxies at optical wavelengths becomes extremely difficult for objects located at distances corresponding to z approx. 1.5-3. Furthermore, certain structures are too diffuse and/or faint to detect from their emission signatures alone, even at relatively low redshifts. For example, for material in the outer regions of the galaxy, where only small amounts of star formation are occuring, it is very difficult to detect the presence of the material from optical images alone despite the advent of ever bigger and better instruments and telescopes. Fortunately, several methods exist that allow astronomers to avoid these observational hurdles. One such method is the use of quasar (QSO) absorption line systems.

Item Type:Thesis (Senior thesis (Major))
Subject Keywords:Physics
Degree Grantor:California Institute of Technology
Division:Physics, Mathematics and Astronomy
Major Option:Astrophysics
Awards:Rosalind W. Alcott Merit Scholarship, Caltech Prize Margie Lauritsen Leighton Prize, 1998. Scholarship, Carnation Scholarship, and John Stauffer Merit Scholarship, 1999.
Thesis Availability:Not set
Research Advisor(s):
  • Steidel, Charles C.
Group:Astronomy Department
Thesis Committee:
  • None, None
Defense Date:May 2000
Record Number:CaltechTHESIS:01102018-103039886
Persistent URL:
Default Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:10631
Deposited By: Joy Painter
Deposited On:10 Jan 2018 23:46
Last Modified:16 Apr 2021 22:34

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