{"id":7076,"date":"2018-05-01T19:34:27","date_gmt":"2018-05-01T17:34:27","guid":{"rendered":"http:\/\/reperes-astro.fr\/?p=7076"},"modified":"2025-01-23T14:51:06","modified_gmt":"2025-01-23T13:51:06","slug":"gaia-poursuit-sa-cartographie-de-la-voie-lactee","status":"publish","type":"post","link":"https:\/\/reperes-astro.fr\/gaia-poursuit-sa-cartographie-de-la-voie-lactee\/","title":{"rendered":"Gaia poursuit sa cartographie de la voie lact\u00e9e"},"content":{"rendered":"\n<div class=\"mceTemp mceIEcenter\" style=\"text-align: left;\"><span style=\"text-align: left;\">Le t\u00e9lescope spatial Gaia vient de diffuser sa deuxi\u00e8me s\u00e9rie de donn\u00e9es 22 mois apr\u00e8s sa mise en fonction. L&rsquo;objectif de sa mission ? Analyser les caract\u00e9ristiques (luminosit\u00e9, distance,mouvement et position) des \u00e9toiles de notre galaxie et d&rsquo;autres corps c\u00e9lestes (ast\u00e9ro\u00efdes, galaxies, quasars&#8230;).<\/span><\/div>\n\n\n\n<div class=\"mceTemp mceIEcenter\" style=\"text-align: left;\">&nbsp;<\/div>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><a href=\"https:\/\/reperes-astro.fr\/%77%70%2d%63%6f%6e%74%65%6e%74\/uploads\/2018\/05\/bpc_gaia-illustration_p44224.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"600\" src=\"https:\/\/reperes-astro.fr\/%77%70%2d%63%6f%6e%74%65%6e%74\/uploads\/2018\/05\/bpc_gaia-illustration_p44224.jpg\" alt=\"\" class=\"wp-image-7078\" style=\"width:630px\" srcset=\"https:\/\/reperes-astro.fr\/%77%70%2d%63%6f%6e%74%65%6e%74\/uploads\/2018\/05\/bpc_gaia-illustration_p44224.jpg 800w, https:\/\/reperes-astro.fr\/%77%70%2d%63%6f%6e%74%65%6e%74\/uploads\/2018\/05\/bpc_gaia-illustration_p44224-300x225.jpg 300w, https:\/\/reperes-astro.fr\/%77%70%2d%63%6f%6e%74%65%6e%74\/uploads\/2018\/05\/bpc_gaia-illustration_p44224-768x576.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/a><figcaption class=\"wp-element-caption\">Le satellite Gaia<\/figcaption><\/figure>\n<\/div>\n\n\n<p>Les derniers r\u00e9sultats publi\u00e9s concernent 1,7 milliards d&rsquo;\u00e9toiles (pour la position et luminosit\u00e9). La mission pr\u00e9c\u00e9dente lanc\u00e9e il y a une trentaine d&rsquo;ann\u00e9es n&rsquo;avait permis que de cataloguer 118000 \u00e9toiles.<\/p>\n\n\n\n<p>La pr\u00e9cision des mesures de Gaia donne acc\u00e8s aux mouvements des \u00e9toiles \u00e0 l&rsquo;int\u00e9rieur de certains amas globulaires, et m\u00eame de galaxies li\u00e9es \u00e0 la Voie Lact\u00e9e. Ces r\u00e9sultats vont pouvoir \u00eatre assimil\u00e9s dans des \u00e9tudes sur les effets gravitationnels, ou sur la mati\u00e8re noire.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><a href=\"https:\/\/reperes-astro.fr\/%77%70%2d%63%6f%6e%74%65%6e%74\/uploads\/2018\/05\/Gaia_s_sky_in_colour_article_mob.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"645\" src=\"https:\/\/reperes-astro.fr\/%77%70%2d%63%6f%6e%74%65%6e%74\/uploads\/2018\/05\/Gaia_s_sky_in_colour_article_mob-1024x645.jpg\" alt=\"\" class=\"wp-image-7077\" style=\"width:630px\" srcset=\"https:\/\/reperes-astro.fr\/%77%70%2d%63%6f%6e%74%65%6e%74\/uploads\/2018\/05\/Gaia_s_sky_in_colour_article_mob-1024x645.jpg 1024w, https:\/\/reperes-astro.fr\/%77%70%2d%63%6f%6e%74%65%6e%74\/uploads\/2018\/05\/Gaia_s_sky_in_colour_article_mob-300x189.jpg 300w, https:\/\/reperes-astro.fr\/%77%70%2d%63%6f%6e%74%65%6e%74\/uploads\/2018\/05\/Gaia_s_sky_in_colour_article_mob-768x484.jpg 768w, https:\/\/reperes-astro.fr\/%77%70%2d%63%6f%6e%74%65%6e%74\/uploads\/2018\/05\/Gaia_s_sky_in_colour_article_mob.jpg 1110w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><figcaption class=\"wp-element-caption\">Carte de la voie lact\u00e9e par le satellite Gaia<\/figcaption><\/figure>\n<\/div>\n\n\n<p>La mission doit se poursuivre jusqu&rsquo;en 2022, avec encore trois jeux de donn\u00e9es \u00e0 fournir d&rsquo;ici l\u00e0.<\/p>\n\n\n\n<p>Voir :<\/p>\n\n\n\n<p class=\"has-text-align-center\"><a href=\"http:\/\/www.esa.int\/Our_Activities\/Space_Science\/Gaia\/Gaia_creates_richest_star_map_of_our_Galaxy_and_beyond\" target=\"_blank\" rel=\"noopener\">www.esa.int<\/a><\/p>\n<div class=\"pvc_clear\"><\/div><p id=\"pvc_stats_7076\" class=\"pvc_stats all  \" data-element-id=\"7076\" style=\"\"><i class=\"pvc-stats-icon medium\" aria-hidden=\"true\"><svg aria-hidden=\"true\" focusable=\"false\" data-prefix=\"far\" data-icon=\"chart-bar\" role=\"img\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 512 512\" class=\"svg-inline--fa fa-chart-bar fa-w-16 fa-2x\"><path fill=\"currentColor\" d=\"M396.8 352h22.4c6.4 0 12.8-6.4 12.8-12.8V108.8c0-6.4-6.4-12.8-12.8-12.8h-22.4c-6.4 0-12.8 6.4-12.8 12.8v230.4c0 6.4 6.4 12.8 12.8 12.8zm-192 0h22.4c6.4 0 12.8-6.4 12.8-12.8V140.8c0-6.4-6.4-12.8-12.8-12.8h-22.4c-6.4 0-12.8 6.4-12.8 12.8v198.4c0 6.4 6.4 12.8 12.8 12.8zm96 0h22.4c6.4 0 12.8-6.4 12.8-12.8V204.8c0-6.4-6.4-12.8-12.8-12.8h-22.4c-6.4 0-12.8 6.4-12.8 12.8v134.4c0 6.4 6.4 12.8 12.8 12.8zM496 400H48V80c0-8.84-7.16-16-16-16H16C7.16 64 0 71.16 0 80v336c0 17.67 14.33 32 32 32h464c8.84 0 16-7.16 16-16v-16c0-8.84-7.16-16-16-16zm-387.2-48h22.4c6.4 0 12.8-6.4 12.8-12.8v-70.4c0-6.4-6.4-12.8-12.8-12.8h-22.4c-6.4 0-12.8 6.4-12.8 12.8v70.4c0 6.4 6.4 12.8 12.8 12.8z\" class=\"\"><\/path><\/svg><\/i> <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"16\" alt=\"Loading\" src=\"https:\/\/reperes-astro.fr\/%77%70%2d%63%6f%6e%74%65%6e%74\/plugins\/page-views-count\/ajax-loader-2x.gif\" border=0 \/><\/p><div class=\"pvc_clear\"><\/div>","protected":false},"excerpt":{"rendered":"<p>Le t\u00e9lescope spatial Gaia vient de diffuser sa deuxi\u00e8me s\u00e9rie de donn\u00e9es 22 mois apr\u00e8s sa mise en fonction. L&rsquo;objectif de&#46;&#46;&#46;<\/p>\n<div class=\"pvc_clear\"><\/div>\n<p id=\"pvc_stats_7076\" class=\"pvc_stats all  \" data-element-id=\"7076\" style=\"\"><i class=\"pvc-stats-icon medium\" aria-hidden=\"true\"><svg aria-hidden=\"true\" focusable=\"false\" data-prefix=\"far\" data-icon=\"chart-bar\" role=\"img\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 512 512\" class=\"svg-inline--fa fa-chart-bar fa-w-16 fa-2x\"><path fill=\"currentColor\" d=\"M396.8 352h22.4c6.4 0 12.8-6.4 12.8-12.8V108.8c0-6.4-6.4-12.8-12.8-12.8h-22.4c-6.4 0-12.8 6.4-12.8 12.8v230.4c0 6.4 6.4 12.8 12.8 12.8zm-192 0h22.4c6.4 0 12.8-6.4 12.8-12.8V140.8c0-6.4-6.4-12.8-12.8-12.8h-22.4c-6.4 0-12.8 6.4-12.8 12.8v198.4c0 6.4 6.4 12.8 12.8 12.8zm96 0h22.4c6.4 0 12.8-6.4 12.8-12.8V204.8c0-6.4-6.4-12.8-12.8-12.8h-22.4c-6.4 0-12.8 6.4-12.8 12.8v134.4c0 6.4 6.4 12.8 12.8 12.8zM496 400H48V80c0-8.84-7.16-16-16-16H16C7.16 64 0 71.16 0 80v336c0 17.67 14.33 32 32 32h464c8.84 0 16-7.16 16-16v-16c0-8.84-7.16-16-16-16zm-387.2-48h22.4c6.4 0 12.8-6.4 12.8-12.8v-70.4c0-6.4-6.4-12.8-12.8-12.8h-22.4c-6.4 0-12.8 6.4-12.8 12.8v70.4c0 6.4 6.4 12.8 12.8 12.8z\" class=\"\"><\/path><\/svg><\/i> <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"16\" alt=\"Loading\" src=\"https:\/\/reperes-astro.fr\/%77%70%2d%63%6f%6e%74%65%6e%74\/plugins\/page-views-count\/ajax-loader-2x.gif\" border=0 \/><\/p>\n<div class=\"pvc_clear\"><\/div>\n","protected":false},"author":6,"featured_media":7077,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[109,102,5],"tags":[],"class_list":["post-7076","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-archives-reperes-astro-2018","category-archives-reperes-astro","category-documentation"],"a3_pvc":{"activated":true,"total_views":24,"today_views":0},"yoast_head":"<title>Gaia poursuit sa cartographie de la voie lact\u00e9e - Rep\u00e8res Astro<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/reperes-astro.fr\/gaia-poursuit-sa-cartographie-de-la-voie-lactee\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Gaia poursuit sa cartographie de la voie lact\u00e9e - Rep\u00e8res Astro\" \/>\n<meta property=\"og:description\" content=\"Le t\u00e9lescope spatial Gaia vient de diffuser sa deuxi\u00e8me s\u00e9rie de donn\u00e9es 22 mois apr\u00e8s sa mise en fonction. 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