{"id":2536,"date":"2025-05-23T13:48:32","date_gmt":"2025-05-23T11:48:32","guid":{"rendered":"https:\/\/astrokit.uv.es\/?p=2536"},"modified":"2025-06-13T12:20:40","modified_gmt":"2025-06-13T10:20:40","slug":"el-corrent-estel%c2%b7lar-de-la-galaxia-nana-de-sagitari-lectura-facil","status":"publish","type":"post","link":"https:\/\/astrokit.uv.es\/?p=2536","title":{"rendered":"El corrent estel\u00b7lar de la gal\u00e0xia nana de Sagitari &#8211; lectura f\u00e0cil"},"content":{"rendered":"\n<h1 class=\" wp-block-heading eplus-wrapper\">Les gal\u00e0xies sat\u00e8l\u00b7lit<\/h1>\n\n\n\n<p class=\" eplus-wrapper\">Les gal\u00e0xies grans, com la Via L\u00e0ctia, tenen gal\u00e0xies menudes que giren al seu voltant. Estes xicotetes gal\u00e0xies s&#8217;anomenen <strong>gal\u00e0xies sat\u00e8l\u00b7lit<\/strong>.<\/p>\n\n\n\n<p class=\" eplus-wrapper\">Tenen forma arrodonida o irregular i s\u00f3n molt m\u00e9s xicotetes que la gal\u00e0xia principal.<\/p>\n\n\n\n<p class=\" eplus-wrapper\">En el <strong>model 3D del Grup Local de gal\u00e0xies<\/strong>, pots vore les gal\u00e0xies sat\u00e8l\u00b7lit d<strong>&#8216;Andr\u00f2meda<\/strong> i de la <strong>Via L\u00e0ctia<\/strong>.<\/p>\n\n\n\n<hr class=\" wp-block-separator has-alpha-channel-opacity eplus-wrapper\"\/>\n\n\n\n<h1 class=\" wp-block-heading eplus-wrapper\">Qu\u00e8 s\u00f3n els corrents estel\u00b7lars<\/h1>\n\n\n\n<p class=\" eplus-wrapper\">La gal\u00e0xia gran t\u00e9 una for\u00e7a de gravetat molt forta.<\/p>\n\n\n\n<p class=\" eplus-wrapper\">Esta for\u00e7a va treient gas, pols i, sobretot, estrelles de les gal\u00e0xies sat\u00e8l\u00b7lit<\/p>\n\n\n\n<p class=\" eplus-wrapper\">Estes estrelles que se separen de la gal\u00e0xia sat\u00e8l\u00b7lit formen un <strong>cam\u00ed a l&#8217;espai<\/strong>, com si fos un reguer.<\/p>\n\n\n\n<p class=\" eplus-wrapper\">Este reguer d&#8217;estrelles s&#8217;anomena <strong>corrent estel\u00b7lar<\/strong>.<\/p>\n\n\n\n<hr class=\" wp-block-separator has-alpha-channel-opacity eplus-wrapper\"\/>\n\n\n\n<h1 class=\" wp-block-heading eplus-wrapper\">La gal\u00e0xia nana de Sagitari<\/h1>\n\n\n\n<p class=\" eplus-wrapper\"><strong>Sagitari<\/strong> \u00e9s una gal\u00e0xia menuda.<\/p>\n\n\n\n<p class=\" eplus-wrapper\">T\u00e9 forma allargada, com una pilota estirada. T\u00e9 uns <strong>10 000 anys llum de mida<\/strong>. Fa entre 4.000 i 5.000 milions d&#8217;anys va ser capturada per la Via L\u00e0ctia.<\/p>\n\n\n\n<p class=\" eplus-wrapper\">Sagitari gira al voltant de la Via L\u00e0ctia passant <strong>per dalt i per baix<\/strong>, no pel disc.<\/p>\n\n\n\n<p class=\" eplus-wrapper\">Aix\u00f2 es diu una <strong>\u00f2rbita polar<\/strong>.<\/p>\n\n\n\n<p class=\" eplus-wrapper\">La for\u00e7a de la Via L\u00e0ctia est\u00e0 <strong>desfent a poc a poc Sagitari<\/strong>.<\/p>\n\n\n\n<p class=\" eplus-wrapper\">Aix\u00f2 fa que vegem <strong>arcs d&#8217;estrelles<\/strong> al cel, que s\u00f3n part del seu corrent estel\u00b7lar.<\/p>\n\n\n\n<p class=\" eplus-wrapper\">\u00c9s el corrent estel\u00b7lar <strong>m\u00e9s gran i millor estudiat<\/strong> de la nostra gal\u00e0xia.<\/p>\n\n\n\n<hr class=\" wp-block-separator has-alpha-channel-opacity eplus-wrapper\"\/>\n\n\n\n<h1 class=\" wp-block-heading eplus-wrapper\">El model 3D<\/h1>\n\n\n\n<p class=\" eplus-wrapper\">En el model 3D pots vore f\u00e0cilment:<\/p>\n\n\n<ul class=\" wp-block-list eplus-wrapper eplus-styles-uid-423fa6\">\n<li class=\" eplus-wrapper\"><strong>La Via L\u00e0ctia<\/strong> al centre, amb els seus bra\u00e7os en espiral i el seu nucli arrodonit.<\/li>\n\n\n\n<li class=\" eplus-wrapper\"><strong>Sagitari<\/strong>, molt a prop del disc de la Via L\u00e0ctia. \u00c9s una bola allargada.<\/li>\n\n\n\n<li class=\" eplus-wrapper\">El <strong>corrent estel\u00b7lar<\/strong>. Eix des de Sagitari en direcci\u00f3 perpendicular al disc gal\u00e0ctic. Les boles menudes representen <strong>les estrelles<\/strong> del corrent.<\/li>\n<\/ul>\n\n\n<p class=\" eplus-wrapper\">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Tamb\u00e9 es veu un entramat que representa <strong>el gas i la pols<\/strong> que les acompanyen.<\/p>\n\n\n\n<p class=\" eplus-wrapper\">El model mostra <strong>diversos bucles<\/strong> al corrent. Aix\u00f2 vol dir que Sagitari ja ha donat diverses voltes al voltant de la Via L\u00e0ctia.<\/p>\n\n\n\n<p class=\" eplus-wrapper\">En este model, <strong>el disc de la Via L\u00e0ctia \u00e9s m\u00e9s gran que en la realitat<\/strong>. Aix\u00f2 s&#8217;ha fet per poder enganxar el corrent estel\u00b7lar a la gal\u00e0xia. Aix\u00ed el model \u00e9s m\u00e9s fort.<\/p>\n\n\n\n<hr class=\" wp-block-separator has-alpha-channel-opacity eplus-wrapper\"\/>\n\n\n\n<h1 class=\" wp-block-heading eplus-wrapper\">Qui ha fet este model<\/h1>\n\n\n\n<p class=\" eplus-wrapper\">El model ha estat creat per:<\/p>\n\n\n<ul class=\" wp-block-list eplus-wrapper eplus-styles-uid-23b265\">\n<li class=\" eplus-wrapper\"><strong>Emilio Terol<\/strong> (Observatori Astron\u00f2mic de la Universitat de Val\u00e8ncia),<\/li>\n\n\n\n<li class=\" eplus-wrapper\"><strong>Alberto Fern\u00e1ndez Soto<\/strong> (IFCA),<\/li>\n\n\n\n<li class=\" eplus-wrapper\"><strong>David Mart\u00ednez Delgado<\/strong> (CEFCA).<\/li>\n<\/ul>\n\n\n<p class=\" eplus-wrapper\">Van utilitzar dades reals del sat\u00e8l\u00b7lit <strong>Gaia<\/strong>, que ha mesurat la posici\u00f3 de <strong>mil milions d&#8217;estrelles<\/strong> amb molta precisi\u00f3.<\/p>\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 style=\"height:60px\" aria-hidden=\"true\" class=\" wp-block-spacer eplus-wrapper\"><\/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<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-708db5\">\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\/vxcflUTsg\" 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 for\u00e7a de la Via L\u00e0ctia est\u00e0 desfent a poc a poc Sagitari.<\/p>\n<p>Aix\u00f2 fa que vegem arcs d&#8217;estrelles al cel, que s\u00f3n part del seu corrent estel\u00b7lar.<\/p>\n","protected":false},"author":4,"featured_media":2537,"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":[97,99,96,78],"class_list":["post-2536","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-noticies-lectura-facil","tag-corrent-estel-lar","tag-galaxia-satel-lit","tag-sagitari","tag-via-lactia"],"jetpack_featured_media_url":"https:\/\/astrokit.uv.es\/wp-content\/uploads\/2025\/05\/imagen.png","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/astrokit.uv.es\/index.php?rest_route=\/wp\/v2\/posts\/2536","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=2536"}],"version-history":[{"count":10,"href":"https:\/\/astrokit.uv.es\/index.php?rest_route=\/wp\/v2\/posts\/2536\/revisions"}],"predecessor-version":[{"id":2877,"href":"https:\/\/astrokit.uv.es\/index.php?rest_route=\/wp\/v2\/posts\/2536\/revisions\/2877"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/astrokit.uv.es\/index.php?rest_route=\/wp\/v2\/media\/2537"}],"wp:attachment":[{"href":"https:\/\/astrokit.uv.es\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2536"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/astrokit.uv.es\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2536"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/astrokit.uv.es\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2536"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}