{"id":37972,"date":"2018-03-09T09:37:19","date_gmt":"2018-03-09T09:37:19","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/moving-groups-among-early-type-stars-detection-and-evolution\/"},"modified":"2018-03-09T09:37:19","modified_gmt":"2018-03-09T09:37:19","slug":"moving-groups-among-early-type-stars-detection-and-evolution","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/barcelona\/moving-groups-among-early-type-stars-detection-and-evolution\/","title":{"rendered":"Moving groups among early type stars: detection and evolution."},"content":{"rendered":"<h2>Tesis doctoral de <strong> Ricard Asiain Garcia <\/strong><\/h2>\n<p>Este trabajo doctoral ha sido dedicado al estudio de la detecci\u00f3n, caracterizaci\u00f3n y evoluci\u00f3n de los grupos m\u00f3viles, sistemas de estrellas no ligadas gravitatoriamente que comparten aproximadamente las mismas propiedades cinem\u00e1ticas y que, en general, ocupan extensos vol\u00famenes del entorno solar.  hemos desarrollado un m\u00e9todo robusto que permite separar las estrellas de grupos m\u00f3viles de las de campo sin suponer para ello ning\u00fan conocimiento a priori sobre sus principales propiedades cinem\u00e1ticas. este m\u00e9todo ha sido aplicado a una muestra de estrellas tempranas del entorno solar cuidadosamente seleccionadas para garantizar una buena estimaci\u00f3n de sus edades y velocidades. Hemos utilizado en nuestro estudio los datos astrom\u00e9tricos de gran precisi\u00f3n obtenidos por la misi\u00f3n hipparcos y recientemente publicados. como resultado hemos encontrado algunos de los grupos m\u00f3viles cl\u00e1sicos y, a su vez, otras corrientes estelares correspondientes a subestructuras en el espacio de (u,v,w,log edad).  hemos analizado distintas cuestiones abiertas sobre el origen, evoluci\u00f3n y persistencia de los grupos m\u00f3viles, para lo cual hemos desarrollado un algoritmo que nos ha permitido determinar las trayectorias estelares mediante el uso de un potencial de la galaxia real\u00edstico, y hemos encontrado la ley emp\u00edrica de calentamiento del disco y sus efectos sobre las trayectorias estelares.<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Moving groups among early type stars: detection and evolution.<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Moving groups among early type stars: detection and evolution. <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Ricard Asiain Garcia <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Barcelona<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 16\/03\/1998<\/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>Francesca Figueras Si\u00f1ol<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: eduard Salvador sol\u00e9 <\/li>\n<li>enrique Garc\u00eda-berro montilla (vocal)<\/li>\n<li>jan Palous (vocal)<\/li>\n<li>Ana e Gomez (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Ricard Asiain Garcia Este trabajo doctoral ha sido dedicado al estudio de la detecci\u00f3n, caracterizaci\u00f3n y evoluci\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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