Variation of stellar populations and dark matter with time and environment
<p>In this thesis, I probe the stellar and dark matter component of galaxies in order to infer their evolutionary histories. I am doing this by studying two distinct galaxy population samples: (i) a high redshift sample at <em>z</em>&Tilde;1, and (ii) a high density environ...
| Main Author: | |
|---|---|
| Other Authors: | |
| Format: | Thesis |
| Language: | English |
| Published: |
2017
|
| Subjects: |
| _version_ | 1826304877974781952 |
|---|---|
| author | Shetty, S |
| author2 | Cappellari, M |
| author_facet | Cappellari, M Shetty, S |
| author_sort | Shetty, S |
| collection | OXFORD |
| description | <p>In this thesis, I probe the stellar and dark matter component of galaxies in order to infer their evolutionary histories. I am doing this by studying two distinct galaxy population samples: (i) a high redshift sample at <em>z</em>&Tilde;1, and (ii) a high density environment sample of galaxies in the nearby Coma cluster. By comparing these samples to a sample of galaxies in the local Universe in a low density environment, I infer variation in their properties as a function of time and environment.</p> <p>For both samples, I create accurate dynamical models to infer the stellar Mass-to-Light ratios of the galaxies and their dark matter fractions. Furthermore, I model the stellar population of the galaxies using a full-spectrum technique while reproducing their star formation history in a non-parametric manner. In addition, I use IFS data for a subset of galaxies in the high density sample to create detailed dynamical models that strengthen the results found in that sample.</p> <p>Based on the quantities derived from these analyses, I present results on the IMF normalisation and dark matter fraction of galaxies in both samples. Furthermore, I studied the scaling relations of these galaxies and compared them to that observed for the ATLAS<sup>3D</sup> sample, which serves as a low density sample of the Local Universe, to infer variation in galaxy properties as a function of time and environment.</p> |
| first_indexed | 2024-03-07T06:24:23Z |
| format | Thesis |
| id | oxford-uuid:f3c5334e-c2fe-4005-be2c-4a977765a576 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T06:24:23Z |
| publishDate | 2017 |
| record_format | dspace |
| spelling | oxford-uuid:f3c5334e-c2fe-4005-be2c-4a977765a5762022-03-27T12:14:36ZVariation of stellar populations and dark matter with time and environmentThesishttp://purl.org/coar/resource_type/c_db06uuid:f3c5334e-c2fe-4005-be2c-4a977765a576AstrophysicsEnglishORA Deposit2017Shetty, SCappellari, M<p>In this thesis, I probe the stellar and dark matter component of galaxies in order to infer their evolutionary histories. I am doing this by studying two distinct galaxy population samples: (i) a high redshift sample at <em>z</em>&Tilde;1, and (ii) a high density environment sample of galaxies in the nearby Coma cluster. By comparing these samples to a sample of galaxies in the local Universe in a low density environment, I infer variation in their properties as a function of time and environment.</p> <p>For both samples, I create accurate dynamical models to infer the stellar Mass-to-Light ratios of the galaxies and their dark matter fractions. Furthermore, I model the stellar population of the galaxies using a full-spectrum technique while reproducing their star formation history in a non-parametric manner. In addition, I use IFS data for a subset of galaxies in the high density sample to create detailed dynamical models that strengthen the results found in that sample.</p> <p>Based on the quantities derived from these analyses, I present results on the IMF normalisation and dark matter fraction of galaxies in both samples. Furthermore, I studied the scaling relations of these galaxies and compared them to that observed for the ATLAS<sup>3D</sup> sample, which serves as a low density sample of the Local Universe, to infer variation in galaxy properties as a function of time and environment.</p> |
| spellingShingle | Astrophysics Shetty, S Variation of stellar populations and dark matter with time and environment |
| title | Variation of stellar populations and dark matter with time and environment |
| title_full | Variation of stellar populations and dark matter with time and environment |
| title_fullStr | Variation of stellar populations and dark matter with time and environment |
| title_full_unstemmed | Variation of stellar populations and dark matter with time and environment |
| title_short | Variation of stellar populations and dark matter with time and environment |
| title_sort | variation of stellar populations and dark matter with time and environment |
| topic | Astrophysics |
| work_keys_str_mv | AT shettys variationofstellarpopulationsanddarkmatterwithtimeandenvironment |