RT info:eu-repo/semantics/masterThesis
T1 Code for decomposing the discs of edge-on galaxies into their thin and thick components
A1 Arrizabalaga Díaz-caneja, Cecilia
A2 Máster Universitario en Astrofísica
AB This study introduces a code that generates and fits vertical surface brightness profiles in edge-on galaxies with synthetic profiles created using thin and thick disc models derived from hydrostatic equilibrium equations for two coupled isothermal discs. Using advanced observational techniques and sophisticated modelling, the vertical structure of ESO 533-004 and NGC 4565, from the S4G survey at 3.6µm, is analysed. The methodology addresses scattered light effects with the Line Spread Function (LSF), a rigorous data preprocessing, and iterative fitting processes. The verification against previous studies confirms the model reliability, showing consistency in the results. We find that, relative to the mass of the galaxy, the thin disc is more massive in NGC 4565. Some disc formation models suggest that thick discs form first and then thin discs emerge at a slower rhythm. Our results support these models, as in the framework of a Universe with downsizing massive galaxies, like NGC 4565, are more evolved than lower-mass galaxies and therefore have time to fully grow a thin disc. Future implementations may include incorporating gas discs and refining the LSF model.
YR 2024
FD 2024
LK http://riull.ull.es/xmlui/handle/915/39500
UL http://riull.ull.es/xmlui/handle/915/39500
LA en
DS Repositorio institucional de la Universidad de La Laguna
RD 13-nov-2024