Abundances in field and globular cluster stars of the Galactic bulge: spectroscopy from the near-ultraviolet to the near-infrared
Autor(a) principal: | |
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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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Biblioteca Digital de Teses e Dissertações da USP |
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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 |
_version_ |
1809090661040783360 |