Straat, Jill (2022) A Phenomenological Model of Early Galaxy Evolution. Bachelor's Thesis, Astronomy.
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Abstract
This thesis aims to put constraints on the star formation efficiency and ratio between baryonic matter and dark matter, f and ρb/ρdm respectively, during the Epoch of Reionization. This is interesting to study as no constraints have been put on these parameters yet. In this analysis the constraints were studied for redshifts between 5 and 10. This was done by using halo mass simulations by Murray et al. (2013) and converting those into luminosity functions. For the simulations and the conversion in this thesis, the ΛCDM csmolgy was assumed. In this conversion f and ρb/ρdm were fitted to data by Harikane et al. (2022), Bouwens et al. (2021), Finkelstein et al. (2015), Bowler et al. (2015), Ishigaki et al. (2018), Bowler et al. (2020), Bouwens et al. (2020) and Oesch et al. (2018). The final constraints are bounded by hyperbolas for which the limits are given in table 4.1. A phenomenological model for early galaxy evolution might be a viable explanation for the dip at the low luminosity end of the UV LF. However, a halo mass dependence on f and ρb/ρdm might be interesting to look at in future work.
| Item Type: | Thesis (Bachelor's Thesis) |
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| Supervisor name: | Dayal, P. |
| Degree programme: | Astronomy |
| Thesis type: | Bachelor's Thesis |
| Language: | English |
| Date Deposited: | 19 Jul 2022 09:19 |
| Last Modified: | 19 Jul 2022 09:19 |
| URI: | https://fse.studenttheses.ub.rug.nl/id/eprint/28003 |
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