{"id":2477,"date":"2025-05-19T17:53:52","date_gmt":"2025-05-19T15:53:52","guid":{"rendered":"https:\/\/astrokit.uv.es\/?p=2477"},"modified":"2025-06-13T12:27:54","modified_gmt":"2025-06-13T10:27:54","slug":"el-grup-local-de-galaxies","status":"publish","type":"post","link":"https:\/\/astrokit.uv.es\/?p=2477","title":{"rendered":"El Grup Local de gal\u00e0xies &#8211; lectura f\u00e0cil"},"content":{"rendered":"\n<div class=\"wp-block-group eplus-wrapper has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\">\n<h2 class=\" wp-block-heading eplus-wrapper\">Qu\u00e8 s\u00f3n els grups de gal\u00e0xies?<\/h2>\n\n\n\n<p class=\" has-heading-font-family has-custom-font eplus-wrapper\" style=\"font-family:heading\">Un <strong>grup de gal\u00e0xies<\/strong> \u00e9s un conjunt de gal\u00e0xies que s\u00f3n <strong>a prop unes de les altres<\/strong>. Estes gal\u00e0xies estan unides per la <strong>gravetat<\/strong>.<\/p>\n\n\n\n<p class=\" has-heading-font-family has-custom-font eplus-wrapper\" style=\"font-family:heading\">En un grup hi pot haver <strong>fins a 50 gal\u00e0xies<\/strong>.<\/p>\n\n\n\n<p class=\" has-heading-font-family has-custom-font eplus-wrapper\" style=\"font-family:heading\">Ocupen una zona de l&#8217;espai d<strong>&#8216;uns pocs milions d&#8217;anys llum<\/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 eplus-wrapper has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\">\n<h2 class=\" wp-block-heading eplus-wrapper\">Qu\u00e8 \u00e9s el Grup Local?<\/h2>\n\n\n\n<p class=\" has-heading-font-family has-custom-font eplus-wrapper\" style=\"font-family:heading\">El <strong>Grup Local<\/strong> \u00e9s el grup de gal\u00e0xies on est\u00e0 la nostra gal\u00e0xia, la <strong>Via L\u00e0ctia<\/strong>.<\/p>\n\n\n\n<p class=\" has-heading-font-family has-custom-font eplus-wrapper\" style=\"font-family:heading\">Totes les gal\u00e0xies del Grup Local estan unides per la gravetat.<\/p>\n\n\n\n<p class=\" has-heading-font-family has-custom-font eplus-wrapper\" style=\"font-family:heading\">El Grup Local t\u00e9 un di\u00e0metre d&#8217;uns <strong>10 milions d&#8217;anys llum<\/strong>.<\/p>\n\n\n\n<p class=\" has-heading-font-family has-custom-font eplus-wrapper\" style=\"font-family:heading\">Forma part d&#8217; una estructura major anomenada <strong>superc\u00famul de Virgo<\/strong>.<\/p>\n\n\n\n<p class=\" has-heading-font-family has-custom-font eplus-wrapper\" style=\"font-family:heading\">Este superc\u00famul est\u00e0 dins del superc\u00famul de <strong>Laniakea<\/strong>.<\/p>\n\n\n\n<p class=\" has-heading-font-family has-custom-font eplus-wrapper\" style=\"font-family:heading\">En el nostre <strong>model 3D de la teranyina c\u00f2smica<\/strong>, es poden vore Laniakea i altres superc\u00famuls propers.<\/p>\n\n\n\n<hr class=\" wp-block-separator has-alpha-channel-opacity eplus-wrapper\"\/>\n<\/div>\n\n\n\n<div class=\"wp-block-group eplus-wrapper has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\">\n<h2 class=\" wp-block-heading eplus-wrapper\">Les gal\u00e0xies m\u00e9s importants del Grup Local<\/h2>\n\n\n\n<p class=\" has-heading-font-family has-custom-font eplus-wrapper\" style=\"font-family:heading\">La <strong>gal\u00e0xia m\u00e9s gran<\/strong> del Grup Local \u00e9s <strong>Andr\u00f2meda<\/strong>. Tamb\u00e9 es diu <strong>M31<\/strong>. T\u00e9 una mida d&#8217;uns <strong>152.000 anys llum<\/strong><\/p>\n\n\n\n<p class=\" has-heading-font-family has-custom-font eplus-wrapper\" style=\"font-family:heading\">i cont\u00e9 aproximadament<strong> 1 bili\u00f3 d&#8217;estrelles<\/strong>.<\/p>\n\n\n\n<p class=\" has-heading-font-family has-custom-font eplus-wrapper\" style=\"font-family:heading\">La <strong>segona gal\u00e0xia m\u00e9s gran<\/strong> \u00e9s la <strong>Via L\u00e0ctia<\/strong>.<\/p>\n\n\n\n<p class=\" has-heading-font-family has-custom-font eplus-wrapper\" style=\"font-family:heading\">T\u00e9 uns <strong>90.000 anys llum de di\u00e0metre<\/strong><\/p>\n\n\n\n<p class=\" has-heading-font-family has-custom-font eplus-wrapper\" style=\"font-family:heading\">i al voltant de<strong> 200.000 milions d&#8217;estrelles<\/strong>.<\/p>\n\n\n\n<p class=\" has-heading-font-family has-custom-font eplus-wrapper\" style=\"font-family:heading\">Tant Andr\u00f2meda com la Via L\u00e0ctia s\u00f3n <strong>gal\u00e0xies<\/strong> <strong>espirals<\/strong>.<\/p>\n\n\n\n<hr class=\" wp-block-separator has-alpha-channel-opacity eplus-wrapper\"\/>\n<\/div>\n\n\n\n<div class=\"wp-block-group eplus-wrapper has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\">\n<h2 class=\" wp-block-heading eplus-wrapper\">Les gal\u00e0xies sat\u00e8l\u00b7lit<\/h2>\n\n\n\n<p class=\" has-heading-font-family has-custom-font eplus-wrapper\" style=\"font-family:heading\">Prop d&#8217;aquestes dues gal\u00e0xies grans hi ha <strong>gal\u00e0xies m\u00e9s xicotetes<\/strong>.<\/p>\n\n\n\n<p class=\" eplus-wrapper\">Estes s&#8217;anomenen <strong>gal\u00e0xies sat\u00e8l\u00b7lit<\/strong>.<\/p>\n\n\n\n<p class=\" eplus-wrapper\">La majoria d&#8217;estes gal\u00e0xies sat\u00e8l\u00b7lit s\u00f3n de tipus <strong>esfero\u00efdal o irregular<\/strong>.<\/p>\n\n\n\n<p class=\" eplus-wrapper\">Entre les m\u00e9s grans que giren al voltant de la Via L\u00e0ctia estan:<\/p>\n\n\n<ul class=\" wp-block-list eplus-wrapper eplus-styles-uid-e44f16\">\n<li class=\" eplus-wrapper\">El <strong>Gran N\u00favol de Magallanes<\/strong> (forma espiral).<\/li>\n\n\n\n<li class=\" eplus-wrapper\">El <strong>Xicotet N\u00favol de Magallanes<\/strong> (forma irregular).<\/li>\n\n\n\n<li class=\" eplus-wrapper\">La <strong>galaxia nana de Sagitari<\/strong> (forma el.l\u00edptica)<\/li>\n<\/ul><\/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 eplus-wrapper has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\">\n<h2 class=\" wp-block-heading eplus-wrapper\">Qu\u00e8 passar\u00e0 amb el Grup Local?<\/h2>\n\n\n\n<p class=\" has-heading-font-family has-custom-font eplus-wrapper\" style=\"font-family:heading\">La Via L\u00e0ctia i Andr\u00f2meda s&#8217;estan <strong>acostant<\/strong>.<\/p>\n\n\n\n<p class=\" has-heading-font-family has-custom-font eplus-wrapper\" style=\"font-family:heading\">Van a una velocitat de <strong>123 quil\u00f2metres per segon<\/strong>.<\/p>\n\n\n\n<p class=\" has-heading-font-family has-custom-font eplus-wrapper\" style=\"font-family:heading\">Per aix\u00f2, els cient\u00edfics creuen que <strong>xocaran en uns 4.500 milions d&#8217;anys<\/strong>.<\/p>\n\n\n\n<p class=\" has-heading-font-family has-custom-font eplus-wrapper\" style=\"font-family:heading\">Despr\u00e9s de molt de temps, el Grup Local es convertir\u00e0 en <strong>una sola gal\u00e0xia el\u00b7l\u00edptica<\/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 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 del Grup Local<\/h2>\n\n\n\n<p class=\" has-heading-font-family has-custom-font eplus-wrapper\" style=\"font-family:heading\">Este model 3D mostra les <strong>gal\u00e0xies m\u00e9s brillants<\/strong> del Grup Local.<\/p>\n\n\n\n<p class=\" has-heading-font-family has-custom-font eplus-wrapper\" style=\"font-family:heading\">Les posicions de les gal\u00e0xies s\u00f3n <strong>reals<\/strong>, segons les dades dels astr\u00f2noms.<\/p>\n\n\n\n<p class=\" has-heading-font-family has-custom-font eplus-wrapper\" style=\"font-family:heading\">Les gal\u00e0xies estan col\u00b7locades en una <strong>xarxa de mat\u00e8ria fosca<\/strong>.<\/p>\n\n\n\n<p class=\" has-heading-font-family has-custom-font eplus-wrapper\" style=\"font-family:heading\">Esta xarxa forma l<strong>&#8216;halo del Grup Local<\/strong>.<\/p>\n\n\n\n<p class=\" has-heading-font-family has-custom-font eplus-wrapper\" style=\"font-family:heading\">L&#8217;halo <strong>no es mostra complet<\/strong>: n&#8217;hi ha buits perqu\u00e8 es puguen <strong>tocar les gal\u00e0xies amb les mans<\/strong>.<\/p>\n\n\n\n<p class=\" has-heading-font-family has-custom-font eplus-wrapper\" style=\"font-family:heading\">Cada gal\u00e0xia t\u00e9 la seva forma real:<\/p>\n\n\n\n<p class=\" has-heading-font-family has-custom-font eplus-wrapper\" style=\"font-family:heading\">pot ser <strong>espiral, esfero\u00efdal o irregular<\/strong>.<\/p>\n\n\n\n<hr class=\" wp-block-separator has-alpha-channel-opacity eplus-wrapper\"\/>\n<\/div>\n\n\n\n<div class=\"wp-block-group eplus-wrapper has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\">\n<h2 class=\" wp-block-heading eplus-wrapper\">Quines gal\u00e0xies vegem en el model?<\/h2>\n\n\n\n<p class=\" has-heading-font-family has-custom-font eplus-wrapper\" style=\"font-family:heading\">La gal\u00e0xia espiral m\u00e9s gran del model \u00e9s <strong>Andr\u00f2meda<\/strong>.<\/p>\n\n\n\n<p class=\" has-heading-font-family has-custom-font eplus-wrapper\" style=\"font-family:heading\">A prop d&#8217;ella, en <strong>posici\u00f3 quasi perpendicular<\/strong>, est\u00e0 la <strong>gal\u00e0xia del Triangle<\/strong>.<\/p>\n\n\n\n<p class=\" has-heading-font-family has-custom-font eplus-wrapper\" style=\"font-family:heading\">\u00c9s la <strong>tercera gal\u00e0xia m\u00e9s gran<\/strong> del Grup Local.<\/p>\n\n\n\n<p class=\" has-heading-font-family has-custom-font eplus-wrapper\" style=\"font-family:heading\">Al voltant d&#8217;Andr\u00f2meda hi ha moltes <strong>gal\u00e0xies esfero\u00efdals xicotetes<\/strong>, que s\u00f3n les seues sat\u00e8l\u00b7lits.<\/p>\n\n\n\n<p class=\" has-heading-font-family has-custom-font eplus-wrapper\" style=\"font-family:heading\">Al <strong>centre del model<\/strong> est\u00e0 la <strong>Via L\u00e0ctia<\/strong>.<\/p>\n\n\n\n<p class=\" has-heading-font-family has-custom-font eplus-wrapper\" style=\"font-family:heading\">T\u00e9 forma espiral.<\/p>\n\n\n\n<p class=\" has-heading-font-family has-custom-font eplus-wrapper\" style=\"font-family:heading\">Al costat d&#8217;ella estan les seues <strong>gal\u00e0xies sat\u00e8l\u00b7lit<\/strong>, incloent:<\/p>\n\n\n<ul class=\" wp-block-list eplus-wrapper eplus-styles-uid-13869f\">\n<li class=\" has-heading-font-family eplus-wrapper\">El <strong>Gran N\u00favol de Magallanes<\/strong>, que t\u00e9 forma espiral.<\/li>\n\n\n\n<li class=\" has-heading-font-family eplus-wrapper\">El <strong>Xicotet N\u00favol de Magallanes<\/strong>, amb forma irregular.<\/li>\n<\/ul>\n\n\n<p class=\" has-heading-font-family has-custom-font eplus-wrapper\" style=\"font-family:heading\">Es reconeixen perqu\u00e8 tenen <strong>puntes als extrems<\/strong>.<\/p>\n\n\n\n<p class=\" has-heading-font-family has-custom-font eplus-wrapper\" style=\"font-family:heading\">Este model ha estat creat per:<\/p>\n\n\n<ul class=\" wp-block-list eplus-wrapper eplus-styles-uid-caec94\">\n<li class=\" has-heading-font-family eplus-wrapper\"><strong>Emilio Terol<\/strong>\u00a0(Observatorio Astron\u00f3mico de la Universitat de Val\u00e8ncia)<\/li>\n\n\n\n<li class=\" has-heading-font-family eplus-wrapper\"><strong>Alberto Fern\u00e1ndez-Soto<\/strong> (Institut de F\u00edsica de Cant\u00e0bria)<\/li>\n<\/ul>\n\n\n<p class=\" has-heading-font-family has-custom-font eplus-wrapper\" style=\"font-family:heading\">S&#8217;ha fet amb <strong>dades reals<\/strong> de posicions i dist\u00e0ncies de les gal\u00e0xies del Grup Local.<\/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-228533\">\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\/aC5hopHEZ\" 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>El Grup Local \u00e9s el grup de gal\u00e0xies on est\u00e0 la nostra gal\u00e0xia, la Via L\u00e0ctia.<\/p>\n","protected":false},"author":4,"featured_media":2472,"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":[89,72,84,78],"class_list":["post-2477","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-noticies-lectura-facil","tag-cumul-de-galaxies","tag-galaxies","tag-materia-fosca","tag-via-lactia"],"jetpack_featured_media_url":"https:\/\/astrokit.uv.es\/wp-content\/uploads\/2025\/05\/Local-Group.jpg","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/astrokit.uv.es\/index.php?rest_route=\/wp\/v2\/posts\/2477","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=2477"}],"version-history":[{"count":7,"href":"https:\/\/astrokit.uv.es\/index.php?rest_route=\/wp\/v2\/posts\/2477\/revisions"}],"predecessor-version":[{"id":2885,"href":"https:\/\/astrokit.uv.es\/index.php?rest_route=\/wp\/v2\/posts\/2477\/revisions\/2885"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/astrokit.uv.es\/index.php?rest_route=\/wp\/v2\/media\/2472"}],"wp:attachment":[{"href":"https:\/\/astrokit.uv.es\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2477"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/astrokit.uv.es\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2477"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/astrokit.uv.es\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2477"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}