{"id":80885,"date":"2018-03-10T00:04:40","date_gmt":"2018-03-10T00:04:40","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/galactic-globular-clusters-relative-ages-clues-on-the-milky-way-formation-and-evolution\/"},"modified":"2018-03-10T00:04:40","modified_gmt":"2018-03-10T00:04:40","slug":"galactic-globular-clusters-relative-ages-clues-on-the-milky-way-formation-and-evolution","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/astronomia-y-astrofisica\/galactic-globular-clusters-relative-ages-clues-on-the-milky-way-formation-and-evolution\/","title":{"rendered":"Galactic globular clusters relative ages: clues on the milky way formation and evolution"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Alfredo Rafael Rosenberg Gonz\u00e1lez <\/strong><\/h2>\n<p>El objetivo de esta tesis es el estudio de la historia de formaci\u00f3n de nuestra galaxia. Para ello, hemos analizado los sistemas estelares m\u00e1s viejos, los c\u00famulos globulares, obteniendo como resultado principal el que esa formaci\u00f3n e produjo mediante un colapso r\u00e1pido del halo.  la tesis se presenta en tres bloques principales.  -en el primero se estudian dos c\u00famulos en gran detalle: palomar 1 y palomar 12. Para el primero se ha realizado tanto fotometr\u00eda como espectroscop\u00eda, habi\u00e9ndose hecho as\u00ed un estudio total del mismo, y siendo el resultado m\u00e1s relevante el hecho de que es el c\u00famulo globular m\u00e1s joven descubierto hasta el momento. El segundo c\u00famulo, palomar 12, ha sido observado por tratarse de un c\u00famulo joven, y adem\u00e1s, porque nos servir\u00e1 para comprobar los m\u00e9todos y calibrar cuantitativamente los resultados obtenidos en el tercer bloque. Determinados en nuestro estudio, para este c\u00famulo, una edad de un 68+- 10% de la de los c\u00famulos 47 tucanae y m 5.  -en el segundo bloque se presenta el cat\u00e1logo de diagramas color magnitud que constituye la base observacional de la tesis. El cat\u00e1logo est\u00e1 compuesto por cincuenta y dos c\u00famulos globulares que hemos observado en ambos hemisferios, y representa la base da datos m\u00e1s amplia y homog\u00e9nea existente en la actualidad. los c\u00famulos estudiados fueron seleccionados bajo un criterio de proximidad, ya que se pretend\u00eda muestrear los diagramas desde las estrellas m\u00e1s brillantes de la rama de gigantes, hasta algunas magnitudes bajo el turn-off.  -en el tercer bloque se presenta el principal resultado de esta tesis: un estudio de la edades realtivas de treinta y cinco c\u00famulos de nuestra muestra, mediante el cual hemos estudiado el proceso de formaci\u00f3n de la v\u00eda l\u00e1ctea. De los resultados obtenidos llegamos a la conclusi\u00f3n de que halo gal\u00e1ctica(hasta  20kpc) se form\u00f3 en un proceso r\u00e1pido, del orden de 10\u00c2\u00ba a\u00f1os o menos. Adem\u00e1s existen algunos (pocos)c\u00famulos globul<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Galactic globular clusters relative ages: clues on the milky way formation and evolution<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Galactic globular clusters relative ages: clues on the milky way formation and evolution <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Alfredo Rafael Rosenberg Gonz\u00e1lez <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 La laguna<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 13\/10\/1999<\/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>Antonio Aparicio Juan<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: Carlos Martinez roger <\/li>\n<li>Antonio Delgado sanchez (vocal)<\/li>\n<li>eduard Salvador sol\u00e9 (vocal)<\/li>\n<li>Santiago Arribas mocoroa (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Alfredo Rafael Rosenberg Gonz\u00e1lez El objetivo de esta tesis es el estudio de la historia de formaci\u00f3n [&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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