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Alfaro Rudilla Víctor.pdf (314.01 KB)

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Bachelor thesis

Publication date

2018-06

Publication license

cc-by-nc-nd (c) Alfaro, 2018
Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/124843

Natural quenching of stellar formation

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Abstract

Observation shows that, over cosmic history, star formation increased until z = 2. After that it su ered a strong quenching. Various internal and external causes have been postulated to explain this phenomenon. In this paper, we investigate a third more fundamental possibility, which we call \natural quenching". This quenching would simply arise as the consequence of the growth of halos. According to numerical simulations, the more massive halos, the less concentrated they are so that the gas trapped within them cools at a lower rate. Consequently, over cosmic evolution, the accretion of gas onto galaxies slows down, which translates into a lower star formation rate. The aim of this study is to find the characteristic time at which this natural quenching becomes effective and check whether it coincides with a redshift of about 2.

Description

Treballs Finals de Grau de Física, Facultat de Física, Universitat de Barcelona, Curs: 2018, Tutor: Eduard Salvador Solé

Subject

Formació d'estels, Halos (Meteorologia), Treballs de fi de grau

Subject (English)

Star formation, Halos (Meteorology), Bachelor's theses

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Treballs Finals de Grau (TFG) - Física

Citation

ALFARO RUDILLA, Víctor. Natural quenching of stellar formation. [consulted: 15 of August of 2026]. Available at: https://hdl.handle.net/2445/124843

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