The star formation history of the Milky Way disc from Gaia DR3 and BGM FASt

Màster Oficial d'Astrofísica, Física de Partícules i Cosmologia, Facultat de Física, Universitat de Barcelona. Curs: 2022-2023. Tutora: Francesca Figueras Siñol

Detalles Bibliográficos
Autor: Alcázar i Julià, Marc del
Tipo de recurso: tesis de maestría
Fecha de publicación:2023
País:España
Institución:Universidad de Barcelona
Repositorio:Dipòsit Digital de la UB
OAI Identifier:oai:diposit.ub.edu:2445/202341
Acceso en línea:https://hdl.handle.net/2445/202341
Access Level:acceso abierto
Palabra clave:Formació d'estels
Via Làctia
Treballs de fi de màster
Star formation
Milky Way
Master's thesis
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spelling The star formation history of the Milky Way disc from Gaia DR3 and BGM FAStAlcázar i Julià, Marc delFormació d'estelsVia LàctiaTreballs de fi de màsterStar formationMilky WayMaster's thesisMàster Oficial d'Astrofísica, Física de Partícules i Cosmologia, Facultat de Física, Universitat de Barcelona. Curs: 2022-2023. Tutora: Francesca Figueras SiñolWe use the Besan¸con Galaxy Model FASt Approximate Simulations (BGM FASt) framework together with the Approximate Bayesian Computation (ABC) algorithm to derive the posterior probability distribution function of the parameters defining the initial mass function (IMF) and the star formation history (SFH) in the Solar neighbourhood. We propose new strategies to unveil the influence of some BGM Std model ingredients from the Poissonian distance metric and the posterior distribution of the ratio between pseudo-simulation and data in the Hess diagrams. Gaia DR3 up to G=13 and a set of consolidated executions of the BGM FASt + ABC code on a Cloud Environment, using both different Mother Simulations and priors, allow us to confirm the existence of the star formation burst in the Galactic disc 2-4 Gyr ago proposed by [Mor et al. 2019]. Furthermore, for the composite IMF, we obtain the slopes of α2 and α3 constrained to the range [1.7, 2.8] and [1.8, 2.4], respectively, in agreement with recent values from the literature. The wide range of values obtained for the total stellar surface mass density of the thin disc at the Solar neighbourhood, between 30-50 M⊙pc−2, demonstrates that, before concluding on the set of best ingredients for the Galactic stellar population model, we shall loop the process to fit again both, the Galactic potential as described in Robin et al. [2022], and the BGM FASt IMF and SFH parameters.Figueras Siñol, Francesca2023info:eu-repo/semantics/masterThesisapplication/pdfhttps://hdl.handle.net/2445/202341Màster Oficial - Astrofísica, Física de Partícules i Cosmologiareponame:Dipòsit Digital de la UBinstname:Universidad de BarcelonaIngléscc-by-nc-nd (c) Alcázar, 2023http://creativecommons.org/licenses/by-nc-nd/3.0/es/info:eu-repo/semantics/openAccessoai:diposit.ub.edu:2445/2023412026-05-27T06:46:51Z
dc.title.none.fl_str_mv The star formation history of the Milky Way disc from Gaia DR3 and BGM FASt
title The star formation history of the Milky Way disc from Gaia DR3 and BGM FASt
spellingShingle The star formation history of the Milky Way disc from Gaia DR3 and BGM FASt
Alcázar i Julià, Marc del
Formació d'estels
Via Làctia
Treballs de fi de màster
Star formation
Milky Way
Master's thesis
title_short The star formation history of the Milky Way disc from Gaia DR3 and BGM FASt
title_full The star formation history of the Milky Way disc from Gaia DR3 and BGM FASt
title_fullStr The star formation history of the Milky Way disc from Gaia DR3 and BGM FASt
title_full_unstemmed The star formation history of the Milky Way disc from Gaia DR3 and BGM FASt
title_sort The star formation history of the Milky Way disc from Gaia DR3 and BGM FASt
dc.creator.none.fl_str_mv Alcázar i Julià, Marc del
author Alcázar i Julià, Marc del
author_facet Alcázar i Julià, Marc del
author_role author
dc.contributor.none.fl_str_mv Figueras Siñol, Francesca
dc.subject.none.fl_str_mv Formació d'estels
Via Làctia
Treballs de fi de màster
Star formation
Milky Way
Master's thesis
topic Formació d'estels
Via Làctia
Treballs de fi de màster
Star formation
Milky Way
Master's thesis
description Màster Oficial d'Astrofísica, Física de Partícules i Cosmologia, Facultat de Física, Universitat de Barcelona. Curs: 2022-2023. Tutora: Francesca Figueras Siñol
publishDate 2023
dc.date.none.fl_str_mv 2023
dc.type.none.fl_str_mv info:eu-repo/semantics/masterThesis
format masterThesis
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/202341
url https://hdl.handle.net/2445/202341
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.rights.none.fl_str_mv cc-by-nc-nd (c) Alcázar, 2023
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv cc-by-nc-nd (c) Alcázar, 2023
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv Màster Oficial - Astrofísica, Física de Partícules i Cosmologia
reponame:Dipòsit Digital de la UB
instname:Universidad de Barcelona
instname_str Universidad de Barcelona
reponame_str Dipòsit Digital de la UB
collection Dipòsit Digital de la UB
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,301603

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