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UBACH RAYA PAU-R.pdf (484.12 KB)

Document type

Bachelor thesis

Publication date

2025-06

Publication license

cc-by-nc-nd (c) Ubach, 2025
Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/223362

Study of the diagonal ridges in metallicity for different star populations

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Abstract

Various surveys, like Gaia, GALAH and LAMOST, have uncovered many features of the Milky Way. In particular, they have uncovered diagonal ridges in metallicity in the (R, Vϕ) plane. In this thesis, we use a realistic N-body simulation to study these ridges. We calculate the metallicity residuals for different age populations and azimuth sectors. We find that residuals decrease with age and change with azimuth. Finally, we calculate the angular momenta of the resonances of the bar and spiral arms, and we find that there is a relation between the residuals and the resonances, but it is not conclusive

Description

Treballs Finals de Grau de Física, Facultat de Física, Universitat de Barcelona, Curs: 2025, Tutora: Maria Teresa Antoja Castelltort

Subject

Astrofísica, Dinàmica estel·lar, Treballs de fi de grau

Subject (English)

Astrophysics, Stellar dynamics, Bachelor's theses

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Treballs Finals de Grau (TFG) - Física

Citation

UBACH RAYA, Pau. Study of the diagonal ridges in metallicity for different star populations. [consulted: 11 of June of 2026]. Available at: https://hdl.handle.net/2445/223362

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