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http://hdl.handle.net/2445/180858
Title: | The shape of spiral galaxies |
Author: | Mur Arellano, Esperanza |
Director/Tutor: | Antoja Castelltort, M. Teresa |
Keywords: | Galàxia espiral Sèries de Fourier Treballs de fi de grau Spiral galaxy Fourier series Bachelor's theses |
Issue Date: | Jul-2021 |
Abstract: | In this work we analyze the stellar surface density distribution in the equatorial plane of the disk of a spiral galaxy from a cosmological simulation and its evolution. We apply a Fourier series adjustment that allows us to detect the different internal structures of the galaxy and intuitively interpret them as central bars, spiral arms or lopsidedness. We see that the galaxy has a complex structure, but it is dominated by the first two Fourier modes, giving rise to a central bar and a spiral arm that winds around the galaxy from the middle radii to outwards. These present different rotation frequencies and, in general, their relative amplitudes increase with the passage of time. The cause of this could be the influence of the satellites, the consequence of the deformation of the halo or the result of the gas accretion, but this should be studied more carefully in the future |
Note: | Treballs Finals de Grau de Física, Facultat de Física, Universitat de Barcelona, Curs: 2021, Tutora: Maria Teresa Antoja Castelltort |
URI: | http://hdl.handle.net/2445/180858 |
Appears in Collections: | Treballs Finals de Grau (TFG) - Física |
Files in This Item:
File | Description | Size | Format | |
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MUR ARELLANO ESPERANZA_4253559_assignsubmission_file_TFG-Mur-Arellano-Esperanza.pdf | 570.09 kB | Adobe PDF | View/Open |
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