Modeling Brightest Central Galaxy Magnitude and Magnitude Gaps as Galaxy Cluster Formation History Tracers
Abstract/Contents
- Abstract
- The large scale spatial distributions of galaxy clusters depend on their masses and their formation histories. The latter, known as assembly bias, can be difficult to observe and necessitates the use of observable tracers of formation history to measure the impacts of assembly bias. We have created a new model to demonstrate how the correlation between dark matter concentration, a quantity correlated with cluster formation history, and two observable formation history tracers impact the large scale spatial distribution of high mass galaxy clusters. We introduce correlation between cluster concentration and magnitude gaps as well as brightest central galaxy (BCG) magnitudes in the Buzzard simulated catalogs and compare average galaxy number density profiles with data profiles for clusters with masses M_200 > 10^14 M⊙h^(-1). We demonstrate correlated galaxy number density profiles and comparisons to observed data for the Sloan Digital Sky Survey (SDSS) and Dark Energy Survey (DES) in this thesis. This work will be used as part of a larger effort to constrain the physical correlation between concentration and magnitude gaps and BCG magnitudes.
Description
| Type of resource | text |
|---|---|
| Date created | May 14, 2021 |
| Date modified | December 5, 2022 |
| Publication date | June 10, 2022 |
Creators/Contributors
| Author | Simotas, Kathlynn Marie |
|---|---|
| Degree granting institution | Stanford University, Department of Physics |
| Thesis advisor | Wechsler, Risa |
| Thesis advisor | Macintosh, Bruce |
Subjects
| Subject | galaxy clusters |
|---|---|
| Subject | halo bias |
| Subject | formation history |
| Genre | Text |
| Genre | Thesis |
Bibliographic information
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- Use and reproduction
- User agrees that, where applicable, content will not be used to identify or to otherwise infringe the privacy or confidentiality rights of individuals. Content distributed via the Stanford Digital Repository may be subject to additional license and use restrictions applied by the depositor.
- License
- This work is licensed under a Creative Commons Attribution Non Commercial 3.0 Unported license (CC BY-NC).
Preferred citation
- Preferred citation
- Simotas, Kathlynn Marie. (2021). Modeling Brightest Central Galaxy Magnitude and Magnitude Gaps as Galaxy Cluster Formation History Tracers. Stanford Digital Repository. Available at: https://purl.stanford.edu/hf600dm8947
Collection
Undergraduate Theses, Department of Physics
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- Contact
- ksimotas@stanford.edu
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