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Addari, Francesco (2020) The third dredge up in low- and intermediate-mass stars: sensitivity to mixing treatments and evolutionary effects. [Magistrali biennali]

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Abstract

The thesis deals with the advanced evolution of low- and intermediate-mass stars (Mi < 8 Msun), with particular focus on the TP-AGB phase, when thermal pulses periodically take place in the interiors while strong stellar winds progressively erode the external mantle. This study, based on the MESA stellar evolution code, aims to investigate the effects of the third dredge up on the surface properties, i.e. chemical composition, effective temperature, and opacity. Different overshooting schemes and mass loss prescriptions were explored. At the same time, I tested the performance and characteristics of the code, a preliminary but necessary step for possible future developments of the research.

Item Type:Magistrali biennali
Corsi di Diploma di Laurea:Scuola di Scienze > Physics
Uncontrolled Keywords:stellar models, mixing processes, AGB stars, third dredge-up, chemical abundances
Subjects:Area 02 - Scienze fisiche > FIS/05 Astronomia e astrofisica
Codice ID:64951
Relatore:Marigo, Paola
Data della tesi:September 2020
Biblioteca:Polo di Scienze > Dip. Fisica e Astronomia "Galileo Galilei" - Biblioteca
Tipo di fruizione per il documento:on-line per i full-text
Tesi sperimentale (Si) o compilativa (No)?:No

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