Abundances in field and globular cluster stars of the Galactic bulge: spectroscopy from the near-ultraviolet to the near-infrared

Detalhes bibliográficos
Autor(a) principal: Ernandes, Heitor
Data de Publicação: 2022
Tipo de documento: Tese
Idioma: eng
Título da fonte: Biblioteca Digital de Teses e Dissertações da USP
Texto Completo: https://www.teses.usp.br/teses/disponiveis/14/14131/tde-12102022-121655/
Resumo: The aim of this work is a better understanding of the formation and evolution of the Galactic bulge, and the nucleosynthesis that took place in the first stars that enriched the early bulge. The Galactic bulge is under intense discussion as concerns its origin and stellar populations. It contains very old metal-poor stars spacial distributed in a spheroidal shape that should have been formed at early times in an early process of bulge formation. The bulge has also a bar that formed from a thick disk probably. This component contains mostly metal-rich stars. The main aim of this work is to expand the studies of chemical abundances in different stellar populations in the Galactic bulge associated with the study of the nucleosynthesis processes. Chemical tagging of different groups of elements such as -, iron-peak, and heavy elements are considered presently as the key discriminator of stellar populations and nucleosynthesis processes. This work also relates to the prospects of the forthcoming instruments VLT-MOONS, VLT-CUBES, and ELT-MOSAIC in the studies of these stellar populations.
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spelling Abundances in field and globular cluster stars of the Galactic bulge: spectroscopy from the near-ultraviolet to the near-infraredAbundâncias de estrelas do campo e em aglomerados globulares do bojo galático: espectroscopia do ultravioleta ao infra-vermelho próximobojo galácticoGalactic bulgenucleossíntesenucleosynthesispopulações estelaresstellar populationsThe aim of this work is a better understanding of the formation and evolution of the Galactic bulge, and the nucleosynthesis that took place in the first stars that enriched the early bulge. The Galactic bulge is under intense discussion as concerns its origin and stellar populations. It contains very old metal-poor stars spacial distributed in a spheroidal shape that should have been formed at early times in an early process of bulge formation. The bulge has also a bar that formed from a thick disk probably. This component contains mostly metal-rich stars. The main aim of this work is to expand the studies of chemical abundances in different stellar populations in the Galactic bulge associated with the study of the nucleosynthesis processes. Chemical tagging of different groups of elements such as -, iron-peak, and heavy elements are considered presently as the key discriminator of stellar populations and nucleosynthesis processes. This work also relates to the prospects of the forthcoming instruments VLT-MOONS, VLT-CUBES, and ELT-MOSAIC in the studies of these stellar populations.Os principais objetivos deste trabalho são a melhor compreensão da formação e evolução do bojo Galáctico, e da nucleossíntese ocorrida nas primeiras supernovas que enriqueceram o bojo em elementos químicos. O bojo galáctico está sob intensa discussão quanto a sua origem e populações estelares. Este cont em estrelas muito antigas pobres em metais que estão espacialmente distribuídas em uma forma esferoidal que se formaram durante o processo inicial de forma ca o de bojo. O bojo tem uma barra que se formou provavelmente a partir do disco espesso. Esta componente cont em principalmente estrelas ricas em metais. O principal objetivo deste trabalho é expandir os estudos de abundâncias químicas em diferentes populações estelares do bojo Galáctico, associado com o estudo de processos de nucleossíntese. As características de abundâncias químicas de diferentes grupos de elementos como elementos-, elementos do pico do ferro e elementos pesados, vem sendo considerado como discriminadores chave de populações estelares e processos de nucleossíntese. Este trabalho também visa relacionar as perspectivas dos futuros instrumentos VLT-MOONS, VLT-CUBES e ELT-MOSAIC no estudo dessas populações estelares.Biblioteca Digitais de Teses e Dissertações da USPBarbuy, Beatriz Leonor SilveiraErnandes, Heitor2022-09-15info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/doctoralThesisapplication/pdfhttps://www.teses.usp.br/teses/disponiveis/14/14131/tde-12102022-121655/reponame:Biblioteca Digital de Teses e Dissertações da USPinstname:Universidade de São Paulo (USP)instacron:USPLiberar o conteúdo para acesso público.info:eu-repo/semantics/openAccesseng2022-10-17T11:58:34Zoai:teses.usp.br:tde-12102022-121655Biblioteca Digital de Teses e Dissertaçõeshttp://www.teses.usp.br/PUBhttp://www.teses.usp.br/cgi-bin/mtd2br.plvirginia@if.usp.br|| atendimento@aguia.usp.br||virginia@if.usp.bropendoar:27212022-10-17T11:58:34Biblioteca Digital de Teses e Dissertações da USP - Universidade de São Paulo (USP)false
dc.title.none.fl_str_mv Abundances in field and globular cluster stars of the Galactic bulge: spectroscopy from the near-ultraviolet to the near-infrared
Abundâncias de estrelas do campo e em aglomerados globulares do bojo galático: espectroscopia do ultravioleta ao infra-vermelho próximo
title Abundances in field and globular cluster stars of the Galactic bulge: spectroscopy from the near-ultraviolet to the near-infrared
spellingShingle Abundances in field and globular cluster stars of the Galactic bulge: spectroscopy from the near-ultraviolet to the near-infrared
Ernandes, Heitor
bojo galáctico
Galactic bulge
nucleossíntese
nucleosynthesis
populações estelares
stellar populations
title_short Abundances in field and globular cluster stars of the Galactic bulge: spectroscopy from the near-ultraviolet to the near-infrared
title_full Abundances in field and globular cluster stars of the Galactic bulge: spectroscopy from the near-ultraviolet to the near-infrared
title_fullStr Abundances in field and globular cluster stars of the Galactic bulge: spectroscopy from the near-ultraviolet to the near-infrared
title_full_unstemmed Abundances in field and globular cluster stars of the Galactic bulge: spectroscopy from the near-ultraviolet to the near-infrared
title_sort Abundances in field and globular cluster stars of the Galactic bulge: spectroscopy from the near-ultraviolet to the near-infrared
author Ernandes, Heitor
author_facet Ernandes, Heitor
author_role author
dc.contributor.none.fl_str_mv Barbuy, Beatriz Leonor Silveira
dc.contributor.author.fl_str_mv Ernandes, Heitor
dc.subject.por.fl_str_mv bojo galáctico
Galactic bulge
nucleossíntese
nucleosynthesis
populações estelares
stellar populations
topic bojo galáctico
Galactic bulge
nucleossíntese
nucleosynthesis
populações estelares
stellar populations
description The aim of this work is a better understanding of the formation and evolution of the Galactic bulge, and the nucleosynthesis that took place in the first stars that enriched the early bulge. The Galactic bulge is under intense discussion as concerns its origin and stellar populations. It contains very old metal-poor stars spacial distributed in a spheroidal shape that should have been formed at early times in an early process of bulge formation. The bulge has also a bar that formed from a thick disk probably. This component contains mostly metal-rich stars. The main aim of this work is to expand the studies of chemical abundances in different stellar populations in the Galactic bulge associated with the study of the nucleosynthesis processes. Chemical tagging of different groups of elements such as -, iron-peak, and heavy elements are considered presently as the key discriminator of stellar populations and nucleosynthesis processes. This work also relates to the prospects of the forthcoming instruments VLT-MOONS, VLT-CUBES, and ELT-MOSAIC in the studies of these stellar populations.
publishDate 2022
dc.date.none.fl_str_mv 2022-09-15
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/doctoralThesis
format doctoralThesis
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://www.teses.usp.br/teses/disponiveis/14/14131/tde-12102022-121655/
url https://www.teses.usp.br/teses/disponiveis/14/14131/tde-12102022-121655/
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv
dc.rights.driver.fl_str_mv Liberar o conteúdo para acesso público.
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Liberar o conteúdo para acesso público.
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.coverage.none.fl_str_mv
dc.publisher.none.fl_str_mv Biblioteca Digitais de Teses e Dissertações da USP
publisher.none.fl_str_mv Biblioteca Digitais de Teses e Dissertações da USP
dc.source.none.fl_str_mv
reponame:Biblioteca Digital de Teses e Dissertações da USP
instname:Universidade de São Paulo (USP)
instacron:USP
instname_str Universidade de São Paulo (USP)
instacron_str USP
institution USP
reponame_str Biblioteca Digital de Teses e Dissertações da USP
collection Biblioteca Digital de Teses e Dissertações da USP
repository.name.fl_str_mv Biblioteca Digital de Teses e Dissertações da USP - Universidade de São Paulo (USP)
repository.mail.fl_str_mv virginia@if.usp.br|| atendimento@aguia.usp.br||virginia@if.usp.br
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