{"id":2881,"date":"2024-09-14T11:58:20","date_gmt":"2024-09-14T09:58:20","guid":{"rendered":"http:\/\/boks-meteo-lancrans.fr\/?p=2881"},"modified":"2024-09-14T13:44:48","modified_gmt":"2024-09-14T11:44:48","slug":"quest-un-amas-globulaire","status":"publish","type":"post","link":"http:\/\/boks-meteo-lancrans.fr\/index.php\/2024\/09\/14\/quest-un-amas-globulaire\/","title":{"rendered":"Qu&rsquo;est-ce qu&rsquo;un amas globulaire ?"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"2881\" class=\"elementor elementor-2881\">\n\t\t\t\t<div class=\"elementor-element elementor-element-253532b e-flex e-con-boxed e-con e-parent\" data-id=\"253532b\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-f3f9fd3 elementor-widget elementor-widget-text-editor\" data-id=\"f3f9fd3\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Un amas globulaire\u00a0est un\u00a0amas stellaire\u00a0tr\u00e8s dense, contenant typiquement une centaine de milliers d&rsquo;\u00e9toiles distribu\u00e9es dans une sph\u00e8re dont la taille varie d&rsquo;une vingtaine \u00e0 quelques centaines d&rsquo;ann\u00e9es-lumi\u00e8re. Leur densit\u00e9 est ainsi nettement plus \u00e9lev\u00e9e que celle des\u00a0amas ouverts. Les \u00e9toiles de ces amas sont g\u00e9n\u00e9ralement des\u00a0g\u00e9antes rouges.<\/p><p>L&rsquo;importante quantit\u00e9 d&rsquo;\u00e9toiles coupl\u00e9e \u00e0 leur proximit\u00e9 relative rendent ces amas compacts et durables dans le temps. La force de gravit\u00e9 que chaque \u00e9toile exerce sur l&rsquo;autre les emp\u00eachent de s&rsquo;\u00e9chapper de l&rsquo;amas, cr\u00e9ant une certaine coh\u00e9sion.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-8a6eabe e-flex e-con-boxed e-con e-parent\" data-id=\"8a6eabe\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-5d87a56 e-con-full e-flex e-con e-child\" data-id=\"5d87a56\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-81e7029 elementor-widget elementor-widget-heading\" data-id=\"81e7029\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Les premiers amas globulaires d\u00e9couverts<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0b28696 elementor-widget elementor-widget-text-editor\" data-id=\"0b28696\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ul><li><strong>M 22<\/strong> &#8211; Abraham Lhie en 1665<\/li><li><strong>NGC 5139<\/strong> &#8211; Edmond Halley en 1677<\/li><li><strong>M 5<\/strong> &#8211; Gottfried Kirch en 1702<\/li><li><strong>M 13<\/strong> &#8211; EDmond Halley en 1714<\/li><li><strong>M 71<\/strong> &#8211; Philippe Loys de Ch\u00e9seaux en 1745<\/li><li><strong>M 4<\/strong> &#8211; Philippe Loys de Ch\u00e9seaux en 1746<\/li><li><strong>M 15<\/strong> &#8211; Jean-Dominique Maraldi en 1746<\/li><li><strong>M 2<\/strong> &#8211; Jean-Dominique Maraldi en 1746<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-0c4681b e-con-full e-flex e-con e-child\" data-id=\"0c4681b\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-96be137 elementor-widget elementor-widget-image\" data-id=\"96be137\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"594\" height=\"468\" src=\"http:\/\/boks-meteo-lancrans.fr\/wp-content\/uploads\/2024\/08\/M13.jpg\" class=\"attachment-large size-large wp-image-2630\" alt=\"\" srcset=\"http:\/\/boks-meteo-lancrans.fr\/wp-content\/uploads\/2024\/08\/M13.jpg 594w, http:\/\/boks-meteo-lancrans.fr\/wp-content\/uploads\/2024\/08\/M13-300x236.jpg 300w\" sizes=\"(max-width: 594px) 100vw, 594px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-68656b4 elementor-widget elementor-widget-heading\" data-id=\"68656b4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Amas Globulaire M 13<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-2836897 e-flex e-con-boxed e-con e-parent\" data-id=\"2836897\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-1f4ed19 e-con-full e-flex e-con e-child\" data-id=\"1f4ed19\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-c033823 elementor-widget elementor-widget-heading\" data-id=\"c033823\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">O\u00f9 trouver ces amas globulaires ?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9e6bede elementor-widget elementor-widget-text-editor\" data-id=\"9e6bede\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Les amas globulaires sont distribu\u00e9s autour de la galaxie et forment une sorte de halo sph\u00e9rique autour de celle-ci. On en d\u00e9nombre 150 connus, mais il est probable qu&rsquo;il en existe plus, cach\u00e9s par le gaz et les poussi\u00e8res galactiques. La moiti\u00e9 environ des amas globulaires est concentr\u00e9e dans les constellations du Sagittaire, d&rsquo;Ophiuchus et du Scorpion.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-15be924 e-con-full e-flex e-con e-child\" data-id=\"15be924\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-168d8e3 e-con-full e-flex e-con e-child\" data-id=\"168d8e3\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-ab9c543 elementor-widget elementor-widget-image\" data-id=\"ab9c543\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"1024\" height=\"594\" src=\"http:\/\/boks-meteo-lancrans.fr\/wp-content\/uploads\/2024\/09\/Schema-galactique-1024x594.jpg\" class=\"attachment-large size-large wp-image-2889\" alt=\"\" srcset=\"http:\/\/boks-meteo-lancrans.fr\/wp-content\/uploads\/2024\/09\/Schema-galactique-1024x594.jpg 1024w, http:\/\/boks-meteo-lancrans.fr\/wp-content\/uploads\/2024\/09\/Schema-galactique-300x174.jpg 300w, http:\/\/boks-meteo-lancrans.fr\/wp-content\/uploads\/2024\/09\/Schema-galactique-768x445.jpg 768w, http:\/\/boks-meteo-lancrans.fr\/wp-content\/uploads\/2024\/09\/Schema-galactique.jpg 1330w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-d251640 e-con-full e-flex e-con e-child\" data-id=\"d251640\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-f41e73f elementor-widget elementor-widget-text-editor\" data-id=\"f41e73f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Ce sch\u00e9ma de la galaxie en vue lat\u00e9rale montre la distribution des amas gobulaires autour du centre galactque.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Un amas globulaire\u00a0est un\u00a0amas stellaire\u00a0tr\u00e8s dense, contenant typiquement une centaine de milliers d&rsquo;\u00e9toiles distribu\u00e9es dans une sph\u00e8re dont la taille varie d&rsquo;une vingtaine \u00e0 quelques &hellip; <\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[11,6],"tags":[],"class_list":["post-2881","post","type-post","status-publish","format-standard","hentry","category-amas-globulaire","category-astronomie"],"_links":{"self":[{"href":"http:\/\/boks-meteo-lancrans.fr\/index.php\/wp-json\/wp\/v2\/posts\/2881","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/boks-meteo-lancrans.fr\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/boks-meteo-lancrans.fr\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/boks-meteo-lancrans.fr\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/boks-meteo-lancrans.fr\/index.php\/wp-json\/wp\/v2\/comments?post=2881"}],"version-history":[{"count":20,"href":"http:\/\/boks-meteo-lancrans.fr\/index.php\/wp-json\/wp\/v2\/posts\/2881\/revisions"}],"predecessor-version":[{"id":2903,"href":"http:\/\/boks-meteo-lancrans.fr\/index.php\/wp-json\/wp\/v2\/posts\/2881\/revisions\/2903"}],"wp:attachment":[{"href":"http:\/\/boks-meteo-lancrans.fr\/index.php\/wp-json\/wp\/v2\/media?parent=2881"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/boks-meteo-lancrans.fr\/index.php\/wp-json\/wp\/v2\/categories?post=2881"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/boks-meteo-lancrans.fr\/index.php\/wp-json\/wp\/v2\/tags?post=2881"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}