{"id":69467,"date":"2018-03-09T23:13:55","date_gmt":"2018-03-09T23:13:55","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/estudio-de-las-componentes-galacticas-en-el-entorno-solar\/"},"modified":"2018-03-09T23:13:55","modified_gmt":"2018-03-09T23:13:55","slug":"estudio-de-las-componentes-galacticas-en-el-entorno-solar","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/barcelona\/estudio-de-las-componentes-galacticas-en-el-entorno-solar\/","title":{"rendered":"Estudio de las componentes gal\u00e1cticas en el entorno solar"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Eduardo Masana Fresno <\/strong><\/h2>\n<p>Los datos astrom\u00e9tricos del cat\u00e1logo hipparcos de estrellas enanas fgk combinados con la fotometr\u00eda infrarrojo del cat\u00e1logo 2mass han permitido la determinaci\u00f3n de los par\u00e1metros (cinem\u00e1tica, metalicidad, edad y luminosidad) de cada una de las componentes gal\u00e1cticas (disco delgado, disco grueso y halo) que encontramos en el entorno solar, as\u00ed como la dependencia de estos par\u00e1metros con la temperatura y la metalicidad. Para ello se ha utilizado una muestra de m\u00e1s de 11000 estrellas y se ha construido un modelo de la misma que inclu\u00eda, adem\u00e1s de las caracter\u00edsticas f\u00edsicas de la poblaci\u00f3n de la que cual ha sido extra\u00edda dicha muestra, los procesos de selecci\u00f3n y los errores observacionales. Este modelo ha sido ajustado a trav\u00e9s de un m\u00e9todo de m\u00e1xima verosimilitud. Para la determinaci\u00f3n de la temperatura se ha desarrollado un m\u00e9todo basado en la comparaci\u00f3n entre la fotometr\u00eda vjhk observada y la fotometr\u00eda sint\u00e9tica adecuada para cada una de estas bandas a partir de los modelos de atm\u00f3sferas estelares. Los resultados obtenidos muestran un halo con una edad entre 12.5 y 13.5 ga y metalicidad promedio [fe\/h]=-1.5; un disco grueso con una edad entre 10 y 12 ga y [fe\/h]= -0.63, y un disco delgado que ha sido dividido en dos subcomponentes j\u00f3venes (edad inferior a 10 ga), ambas de metalicidad solar pero con cinem\u00e1tica algo diferente, y una componente ligeramente m\u00e1s vieja y menos met\u00e1lica que las anteriores.<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Estudio de las componentes gal\u00e1cticas en el entorno solar<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Estudio de las componentes gal\u00e1cticas en el entorno solar <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Eduardo Masana Fresno <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Barcelona<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 16\/07\/2004<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h3>Direcci\u00f3n y tribunal<\/h3>\n<ul>\n<li><strong>Director de la tesis<\/strong>\n<ul>\n<li>Carme Jordi Nebot<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: blas Sanahuja parera <\/li>\n<li>angel Miguel Alonso sanchez (vocal)<\/li>\n<li>Ana Stefanovictch-g\u00f3mez (vocal)<\/li>\n<li>Rafael Garrido haba (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Eduardo Masana Fresno Los datos astrom\u00e9tricos del cat\u00e1logo hipparcos de estrellas enanas fgk combinados con la fotometr\u00eda [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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