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Pianta, Camilla (2019) The impact of binary stars in the determination of the total mass of stellar system. [Magistrali biennali]

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Abstract

Binary stars play a very important role in the dynamics of stellar systems such as star clusters. After a detailed analysis of binary classification, formation mechanisms and both fundamental parameters and distributions, the impact of binaries in the determination of the total cluster mass has been investigated by means of N-body simulations founded on the code NBODY7. Since the primordial binary fraction is a crucial ingredient in star cluster dynamical evolution, three open-clusters-like models characterised by a different initial binary percentage have been realised and a careful examination of their outputs has been performed. In the end, two HRD-based methods, i.e. the photometric and the isochrone fitting methods, have been employed to point out the fact that either neglecting the presence of binaries or not accounting for them properly leads to definitely wrong mass estimates.

Item Type:Magistrali biennali
Corsi di Diploma di Laurea:Scuola di Scienze > Astronomia
Uncontrolled Keywords:Total Cluster Mass, Binary Stars
Subjects:Area 02 - Scienze fisiche > FIS/05 Astronomia e astrofisica
Codice ID:63441
Relatore:Carraro, Giovanni
Correlatore:Mapelli, Michela
Data della tesi:19 September 2019
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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