{"id":13535,"date":"2018-03-09T08:59:51","date_gmt":"2018-03-09T08:59:51","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/emission-of-high-density-tracer-molecules-in-star-forming-regions\/"},"modified":"2018-03-09T08:59:51","modified_gmt":"2018-03-09T08:59:51","slug":"emission-of-high-density-tracer-molecules-in-star-forming-regions","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/barcelona\/emission-of-high-density-tracer-molecules-in-star-forming-regions\/","title":{"rendered":"Emission of high-density tracer molecules in star-forming regions"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Oscar Morta Chirivella <\/strong><\/h2>\n<p>En este trabajo hemos ampliado y mejorado el estudio sobre las discrepancias entre la emision de las moleculas de cs y nh3 en cinco regiones de formacion estelar: hh43, afgl 6366s, l673, w75s y l1251. En particular, hemos encontrado que los m\u00e1ximos de emision se encuentran separados por   0.2 pc; las regiones trazadas por cs son mas extensas que las trazadas por nh3, y las lineas de cs son    0.5 km s-1 m\u00e1s anchas que las de nh3.  para explicar las anteriores observaciones, hemos desarrollado un modelo quimico en le cual las condensaciones de alta densidad estan formadas por grumos o subcondensaciones no resueltos por las observaciones realizadas con moderada resolucion angular. La diferente evolucion quimica y fisica de estos grumos determina las diferencias de emision. Tambien fuimos capaces de hacer una clasificacion de las mol\u00e9culas de nuestro modelo en moleculas de formacion temprana, como la mol\u00e9cula de cs, y mol\u00e9culas de formaci\u00f3n tard\u00eda, como la molecula de nh3.  hemos hecho un estudio multitransicional con alta resoluci\u00f3n angular de la region l673 para comprobar la validez del modelo. Detectamos emisi\u00f3n de las lineas cs (j=2&#8212;&gt;1), n2h+(j=1&#8211;&gt;0) y hco+(j=1&#8211;&gt;0). Las observaciones interferometricas a alta resolucion angular revelaron un medio mucho mas grumoso que el observado con una sola antena, adem\u00e1s se encontraba diferenciaci\u00f3n quimica entre las subcondensaciones detectadas. El modelo quimico fue capaz de explicar las observaciones interferometricas, si tenemos en cuenta la probable auto-absorci\u00f3n de hco+, aunque son necesarias mas observaciones multitransicionales con una mayor sensibilidad.<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Emission of high-density tracer molecules in star-forming regions<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Emission of high-density tracer molecules in star-forming regions <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Oscar Morta Chirivella <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Barcelona<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 29\/10\/2001<\/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>Robert Estalella Boadella<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: josep Mar\u00eda Torrelles arnedo <\/li>\n<li>mario Tafalla garcia (vocal)<\/li>\n<li>guillem Anglada pons (vocal)<\/li>\n<li>Jorge Cepa nogue (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Oscar Morta Chirivella En este trabajo hemos ampliado y mejorado el estudio sobre las discrepancias entre la [&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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