{"id":2372,"date":"2025-05-12T16:20:26","date_gmt":"2025-05-12T14:20:26","guid":{"rendered":"https:\/\/astrokit.uv.es\/?p=2372"},"modified":"2025-06-13T12:41:36","modified_gmt":"2025-06-13T10:41:36","slug":"la-via-lactia-i-el-seu-halo-lf","status":"publish","type":"post","link":"https:\/\/astrokit.uv.es\/?p=2372","title":{"rendered":"La Via L\u00e0ctia i el seu halo &#8211; lectura f\u00e0cil"},"content":{"rendered":"\n<div class=\"wp-block-group has-heading-font-family eplus-wrapper has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\">\n<h2 class=\" wp-block-heading eplus-wrapper\">La Via L\u00e0ctia<\/h2>\n\n\n\n<p class=\" eplus-wrapper\">La&nbsp;<strong>Via L\u00e0ctia<\/strong>&nbsp;\u00e9s la gal\u00e0xia on vivim.<br>Una&nbsp;<strong>gal\u00e0xia<\/strong>&nbsp;\u00e9s un grup molt gran d\u2019estrelles, gas i pols que est\u00e0 unit per la gravetat.<\/p>\n\n\n\n<p class=\" eplus-wrapper\">La Via L\u00e0ctia t\u00e9&nbsp;<strong>forma d\u2019espiral<\/strong>.<br>Podem distingir 3 parts principals:<\/p>\n\n\n<ul class=\" wp-block-list eplus-wrapper eplus-styles-uid-fbc2f5\">\n<li class=\" eplus-wrapper\">El\u00a0<strong>bulb central<\/strong>, que est\u00e0 al centre.<\/li>\n\n\n\n<li class=\" eplus-wrapper\">El\u00a0<strong>disc<\/strong>, que t\u00e9 bra\u00e7os en forma d\u2019espiral.<\/li>\n\n\n\n<li class=\" eplus-wrapper\">L&#8217;<strong>halo<\/strong>, que \u00e9s una esfera gran que envolta el disc i el bulb.<\/li>\n<\/ul>\n\n\n<p class=\" eplus-wrapper\">El disc \u00e9s molt gran.<br>Fa uns&nbsp;<strong>100 mil anys llum<\/strong>&nbsp;de di\u00e0metre.<br>Per\u00f2 \u00e9s molt&nbsp;<strong>prim<\/strong>, nom\u00e9s fa&nbsp;<strong>1.000 anys llum<\/strong>&nbsp;de gros.<br>A m\u00e9s,&nbsp;<strong>no \u00e9s pla<\/strong>, sin\u00f3 que t\u00e9 una forma&nbsp;<strong>lleugerament corbada<\/strong>.<\/p>\n\n\n\n<p class=\" eplus-wrapper\">El&nbsp;<strong>Sistema Solar<\/strong>, on es troba la Terra,<br>est\u00e0 en un dels bra\u00e7os m\u00e9s externs del disc.<br>Est\u00e0 a uns&nbsp;<strong>26 mil anys llum<\/strong>&nbsp;del centre de la gal\u00e0xia.<\/p>\n\n\n\n<p class=\" eplus-wrapper\">Al centre hi ha un&nbsp;<strong>forat negre molt gran<\/strong>, anomenat&nbsp;<strong>Sagitari A*<\/strong>.<br>Este forat negre pesa unes&nbsp;<strong>4,2 milions de vegades m\u00e9s que el Sol<\/strong>.<\/p>\n<\/div>\n\n\n\n<hr class=\" wp-block-separator has-alpha-channel-opacity eplus-wrapper\"\/>\n\n\n\n<div class=\"wp-block-group has-heading-font-family eplus-wrapper has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\">\n<h2 class=\" wp-block-heading eplus-wrapper\">L&#8217;halo<\/h2>\n\n\n\n<p class=\" eplus-wrapper\">L&#8217;<strong>halo<\/strong>&nbsp;de la Via L\u00e0ctia t\u00e9&nbsp;<strong>forma de esfera<\/strong>.<br>\u00c9s molt gran: pot tindre fins a&nbsp;<strong>mig mili\u00f3 d\u2019anys llum<\/strong>&nbsp;de radi.<br>Este radi es mesura des del centre de la gal\u00e0xia.<\/p>\n\n\n\n<p class=\" eplus-wrapper\">L&#8217;halo est\u00e0 format principalment per:<\/p>\n\n\n<ul class=\" wp-block-list eplus-wrapper eplus-styles-uid-d7489a\">\n<li class=\" eplus-wrapper\"><strong>Mat\u00e8ria fosca<\/strong>, que\u00a0<strong>no es pot vore<\/strong>,<br>per\u00f2 que sabem que hi \u00e9s per la gravetat que genera.<\/li>\n\n\n\n<li class=\" eplus-wrapper\"><strong>C\u00famuls globulars<\/strong>, que s\u00f3n grups molt densos d\u2019estreles.<br>Estos c\u00famuls poden tindre\u00a0<strong>milions d\u2019estreles<\/strong>.<\/li>\n<\/ul>\n\n\n<p class=\" eplus-wrapper\">La&nbsp;<strong>mat\u00e8ria fosca<\/strong>&nbsp;funciona com un&nbsp;<strong>entramat invisible<\/strong>,<br>com un andami que sost\u00e9 les estrelles i els c\u00famuls de l&#8217;halo.<\/p>\n\n\n\n<p class=\" eplus-wrapper\">Els&nbsp;<strong>c\u00famuls globulars<\/strong>&nbsp;que estan m\u00e9s lluny del centre<br>s\u00f3n els&nbsp;<strong>m\u00e9s antics<\/strong>&nbsp;de la Via L\u00e0ctia.<br>Tenen uns&nbsp;<strong>13.500 milions d\u2019anys<\/strong>,<br>quasi tan antics com el&nbsp;<strong>Big Bang<\/strong>.<\/p>\n<\/div>\n\n\n\n<hr class=\" wp-block-separator has-alpha-channel-opacity eplus-wrapper\"\/>\n\n\n\n<div class=\"wp-block-group has-heading-font-family eplus-wrapper has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\">\n<h2 class=\" wp-block-heading eplus-wrapper\">Una hist\u00f2ria de col\u00b7lisions<\/h2>\n\n\n\n<p class=\" eplus-wrapper\">L&#8217;<strong>halo<\/strong>&nbsp;ens conta la hist\u00f2ria de la Via L\u00e0ctia.<\/p>\n\n\n\n<p class=\" eplus-wrapper\">Fa entre&nbsp;<strong>7 i 10 mil milions d\u2019anys<\/strong>,<br>una&nbsp;<strong>gal\u00e0xia m\u00e9s xicoteta<\/strong>&nbsp;va xocar contra la Via L\u00e0ctia.<\/p>\n\n\n\n<p class=\" eplus-wrapper\">Esta gal\u00e0xia es diu&nbsp;<strong>Gaia-Salsitxa-Encelad<\/strong>.<br>Les seues estrelles es van barrejar amb les de la nostra gal\u00e0xia<br>i van quedar repartides per l&#8217;<strong>halo de gas i mat\u00e8ria fosca<\/strong>.<\/p>\n<\/div>\n\n\n\n<hr class=\" wp-block-separator has-alpha-channel-opacity eplus-wrapper\"\/>\n\n\n\n<div class=\"wp-block-group has-heading-font-family eplus-wrapper has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\">\n<h2 class=\" wp-block-heading eplus-wrapper\">El model 3D<\/h2>\n\n\n\n<p class=\" eplus-wrapper\">Amb tota esta informaci\u00f3,<br>s\u2019ha fet un&nbsp;<strong>model en 3D<\/strong>&nbsp;de la Via L\u00e0ctia i el seu halo.<\/p>\n\n\n\n<p class=\" eplus-wrapper\">En este model es veu:<\/p>\n\n\n<ul class=\" wp-block-list eplus-wrapper eplus-styles-uid-c78ee1\">\n<li class=\" eplus-wrapper\">El\u00a0<strong>halo<\/strong>, representat amb una\u00a0<strong>xarxa<\/strong>\u00a0que simbolitza la mat\u00e8ria fosca i el gas.<\/li>\n\n\n\n<li class=\" eplus-wrapper\">Els\u00a0<strong>c\u00famuls globulars<\/strong>\u00a0i\u00a0<strong>estreles<\/strong>\u00a0com a boletes dins del halo.<\/li>\n\n\n\n<li class=\" eplus-wrapper\">Al centre, es veu el\u00a0<strong>disc de la Via L\u00e0ctia<\/strong>.<\/li>\n<\/ul>\n\n\n<p class=\" eplus-wrapper\">Els c\u00famuls i estreles del model&nbsp;<strong>no estan a escala<\/strong><br>i&nbsp;<strong>no s\u00f3n dades reals<\/strong>, nom\u00e9s s\u00f3n per ajudar a comprendre millor la gal\u00e0xia.<\/p>\n<\/div>\n\n\n\n<div style=\"height:60px\" aria-hidden=\"true\" class=\" wp-block-spacer eplus-wrapper\"><\/div>\n\n\n\n<p class=\"is-style-info has-heading-font-family has-custom-font eplus-wrapper\" style=\"font-family:heading\">Este treball ha sigut realitzat amb una ajuda de la convocat\u00f2ria de Projectes R+D+i \u201cProves de Concepte\u201d 2022 (PDC2022), finan\u00e7ada per la Uni\u00f3 Europea a trav\u00e9s dels Fons NextGenerationEU, Pla de Recuperaci\u00f3, Transformaci\u00f3 i Resili\u00e8ncia. Refer\u00e8ncia: PDC2022-133930-I00.<\/p>\n\n\n\n<div class=\"wp-block-group eplus-wrapper has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\">\n<div style=\"height:40px\" aria-hidden=\"true\" class=\" wp-block-spacer eplus-wrapper\"><\/div>\n\n\n<div class=\"wp-block-columns eplus-wrapper is-layout-flex wp-container-core-columns-is-layout-28f84493 wp-block-columns-is-layout-flex eplus-styles-uid-26a0c0\">\n<div class=\"wp-block-column eplus-wrapper is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:25%\"><\/div>\n\n\n\n<div class=\"wp-block-column eplus-wrapper is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:50%\">\n<a class=\"gb-button gb-button-57382cc1 gb-button-text\" href=\"https:\/\/sirio.uv.es:9091\/sharing\/1EPaOmUFj\" target=\"_blank\" rel=\"noopener noreferrer\">Descarrega el model<\/a>\n<\/div>\n\n\n\n<div class=\"wp-block-column eplus-wrapper is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:25%\"><\/div>\n<\/div>\n\n\n<div style=\"height:67px\" aria-hidden=\"true\" class=\" wp-block-spacer eplus-wrapper\"><\/div>\n\n\n<p class=\"has-text-align-right has-text-color has-link-color has-heading-font-family has-medium-font-size has-custom-font eplus-wrapper wp-elements-5730e9fed40bf68dd92ae159764cd928 eplus-styles-uid-cfa858\" style=\"color:#90f808;font-family:heading\"><a href=\"https:\/\/astrokit.uv.es\/?page_id=405\" data-type=\"page\" data-id=\"405\">M\u00e9s not\u00edcies<\/a><\/p><\/div>\n","protected":false},"excerpt":{"rendered":"<p>La Via L\u00e0ctia La&nbsp;Via L\u00e0ctia&nbsp;\u00e9s la gal\u00e0xia on vivim.Una&nbsp;gal\u00e0xia&nbsp;\u00e9s un grup molt gran d\u2019estrelles, gas i pols que est\u00e0 unit per la gravetat. La Via L\u00e0ctia t\u00e9&nbsp;forma d\u2019espiral.Podem distingir 3 parts principals: El disc \u00e9s molt gran.Fa uns&nbsp;100 mil anys llum&nbsp;de di\u00e0metre.Per\u00f2 \u00e9s molt&nbsp;prim, nom\u00e9s fa&nbsp;1.000 anys llum&nbsp;de gros.A m\u00e9s,&nbsp;no \u00e9s pla, sin\u00f3 que t\u00e9 [&hellip;]<\/p>\n","protected":false},"author":4,"featured_media":2264,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_coblocks_attr":"","_coblocks_dimensions":"","_coblocks_responsive_height":"","_coblocks_accordion_ie_support":"","editor_plus_copied_stylings":"{}","_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[76],"tags":[72,84,78],"class_list":["post-2372","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-noticies-lectura-facil","tag-galaxies","tag-materia-fosca","tag-via-lactia"],"jetpack_featured_media_url":"https:\/\/astrokit.uv.es\/wp-content\/uploads\/2025\/03\/MW-halo-color.png","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/astrokit.uv.es\/index.php?rest_route=\/wp\/v2\/posts\/2372","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/astrokit.uv.es\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/astrokit.uv.es\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/astrokit.uv.es\/index.php?rest_route=\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/astrokit.uv.es\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2372"}],"version-history":[{"count":9,"href":"https:\/\/astrokit.uv.es\/index.php?rest_route=\/wp\/v2\/posts\/2372\/revisions"}],"predecessor-version":[{"id":2897,"href":"https:\/\/astrokit.uv.es\/index.php?rest_route=\/wp\/v2\/posts\/2372\/revisions\/2897"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/astrokit.uv.es\/index.php?rest_route=\/wp\/v2\/media\/2264"}],"wp:attachment":[{"href":"https:\/\/astrokit.uv.es\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2372"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/astrokit.uv.es\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2372"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/astrokit.uv.es\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2372"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}