Essen, Thom van (2022) Disentangling Chemodynamic Populations in the Sextans dSph: Demonstrating the Combined Power of Astrometry, Photometry, and Spectroscopy. Master's Thesis / Essay, Astronomy.
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Abstract
While it is widely believed in Lambda CDM cosmology that dwarf galaxies are the building blocks of massive galaxies like our own Milky Way, our understanding on their formation and evolution remains foggy. Moreover, dSph galaxies are the most ubiquitous type of galaxy in the present-day universe. All the more reason to investigate them in detail. In this thesis the Sextans dSph will be examined in detail through a combination of astrometry, photometry, and low- and high resolution spectroscopy. Its kinematics are examined in detail, revealing a velocity gradient consistent with rotation about the minor axis of the system. A previously reported ring-structure with a distinct velocity is found. The chemodynamic stellar populations in Sextans are analysed in detail, showing that the ring-structure is responsible for the bulk of the metal-rich stars in Sextans. Possible scenario's on the formation of the ring are discussed, but a clear possibility is not found.
| Item Type: | Thesis (Master's Thesis / Essay) |
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| Supervisor name: | Tolstoy, E. |
| Degree programme: | Astronomy |
| Thesis type: | Master's Thesis / Essay |
| Language: | English |
| Date Deposited: | 18 Aug 2022 11:44 |
| Last Modified: | 18 Aug 2022 11:44 |
| URI: | https://fse.studenttheses.ub.rug.nl/id/eprint/28414 |
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