{"id":4029,"date":"2015-11-09T05:52:18","date_gmt":"2015-11-09T05:52:18","guid":{"rendered":"https:\/\/blogs.futura-sciences.com\/feldmann\/?p=4029"},"modified":"2015-11-16T05:59:20","modified_gmt":"2015-11-16T05:59:20","slug":"deux-jets-de-gaz-symetriques-pour-herbig-haro-212","status":"publish","type":"post","link":"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/11\/09\/deux-jets-de-gaz-symetriques-pour-herbig-haro-212\/","title":{"rendered":"Deux jets de gaz sym\u00e9triques pour Herbig-Haro 212"},"content":{"rendered":"<p><strong>Un t\u00e9lescope de l&#8217;ESO a enregistr\u00e9 en infrarouge Herbig-Haro 212, deux jets de gaz qui s&#8217;\u00e9chappent d&#8217;une tr\u00e8s jeune \u00e9toile dans la constellation d&#8217;Orion.<\/strong><\/p>\n<p>La <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2014\/09\/15\/constellation-dorion\/\" target=\"_blank\">constellation d&#8217;Orion<\/a>, tr\u00e8s pris\u00e9e des astronomes amateurs parce qu&#8217;elle abrite la c\u00e9l\u00e8bre n\u00e9buleuse <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2014\/11\/19\/nebuleuse-dorion\/\" target=\"_blank\">Messier 42<\/a>, est \u00e9galement une immense pouponni\u00e8re d&#8217;\u00e9toiles. Pour \u00e9tudier la prime jeunesse de ces astres blottis au c\u0153ur de vastes nuages de poussi\u00e8re, il est n\u00e9cessaire de les observer en infrarouge.<\/p>\n<p>En 1998 l&#8217;ESO a mis en service <a href=\"http:\/\/www.eso.org\/public\/france\/teles-instr\/vlt\/vlt-instr\/isaac\/\" target=\"_blank\">ISAAC <\/a>(<em>Infrared Spectrometer And Array Camera<\/em>), une cam\u00e9ra grand champ con\u00e7ue pour travailler dans le proche infrarouge et install\u00e9e sur l&#8217;un des <em><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/09\/09\/insolite-un-drone-survole-le-very-large-telescope\/\" target=\"_blank\">Very Large Telescope<\/a><\/em>.<\/p>\n\n<!-- iframe plugin v.5.1 wordpress.org\/plugins\/iframe\/ -->\n<iframe loading=\"lazy\" frameborder=\"0\" width=\"480\" height=\"270\" src=\"\/\/www.dailymotion.com\/embed\/video\/x38yxc3\" 0=\"allowfullscreen\" scrolling=\"yes\" class=\"iframe-class\"><\/iframe>\n\n<p style=\"text-align: center\"><strong>En vid\u00e9o : les 10 plus grandes d\u00e9couvertes des t\u00e9lescopes de l\u2019ESO<\/strong><\/p>\n<p style=\"text-align: left\">M\u00eame s&#8217;il a d\u00e9sormais laiss\u00e9 sa place au chasseur d&#8217;exoplan\u00e8tes <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/08\/13\/en-video-linstrument-sphere-traque-les-exoplanetes\/\" target=\"_blank\">SPHERE<\/a>, l&#8217;instrument ISAAC a permis une moisson exceptionnelle que les scientifiques continuent de d\u00e9pouiller, comme en t\u00e9moigne cette \u00e9tonnante image de <a href=\"https:\/\/www.eso.org\/public\/france\/images\/potw1541a\/\" target=\"_blank\">Herbig-Haro 212<\/a>.<\/p>\n<p style=\"text-align: left\">\u00a0<a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2015\/10\/eso1.jpg\" rel=\"lightbox[4029]\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-4030\" src=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2015\/10\/eso1-450x280.jpg\" alt=\"eso\" width=\"450\" height=\"280\" srcset=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2015\/10\/eso1-450x280.jpg 450w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2015\/10\/eso1-1024x637.jpg 1024w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2015\/10\/eso1.jpg 1447w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/a><\/p>\n<p style=\"text-align: left\"><!--more-->Les objets HH, qui tiennent leur nom des astronomes\u00a0George Herbig et Guillermo Haro (les premiers \u00e0 les \u00e9tudier \u00e0 la fin des ann\u00e9es 1940), sont \u00a0des jets de gaz chauds que crachent de tr\u00e8s jeunes \u00e9toiles (celle au centre de HH 212 n&#8217;aurait que quelques milliers d&#8217;ann\u00e9es d&#8217;existence).<\/p>\n<p style=\"text-align: left\">Contrairement \u00e0 <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/07\/30\/herbig-haro-110-un-geyser-de-gaz-chaud-dans-orion\/\" target=\"_blank\">Herbig-Haro 110<\/a>, les deux jets de HH 212 sont presque parfaitement sym\u00e9triques. De plus ils montrent des sursauts d&#8217;\u00e9clat \u00e0 intervalles r\u00e9guliers que les chercheurs interpr\u00e8tent comme autant de bouff\u00e9es gazeuses rejet\u00e9es r\u00e9guli\u00e8rement par la proto-\u00e9toile sur des \u00e9chelles de temps tr\u00e8s courtes, puisque l&#8217;\u00e9cart entre deux rejets pourrait \u00eatre de l&#8217;ordre de 30 ans seulement !<\/p>\n<!-- AddThis Advanced Settings generic via filter on the_content --><!-- AddThis Share Buttons generic via filter on the_content -->","protected":false},"excerpt":{"rendered":"<p>Un t\u00e9lescope de l&#8217;ESO a enregistr\u00e9 en infrarouge Herbig-Haro 212, deux jets de gaz qui s&#8217;\u00e9chappent d&#8217;une tr\u00e8s jeune \u00e9toile dans la constellation d&#8217;Orion. La constellation d&#8217;Orion, tr\u00e8s pris\u00e9e des astronomes amateurs parce qu&#8217;elle abrite la c\u00e9l\u00e8bre n\u00e9buleuse Messier 42, est \u00e9galement une immense pouponni\u00e8re d&#8217;\u00e9toiles. Pour \u00e9tudier la prime jeunesse de ces astres blottis &hellip; <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/11\/09\/deux-jets-de-gaz-symetriques-pour-herbig-haro-212\/\" class=\"more-link\">Continuer la lecture de <span class=\"screen-reader-text\">Deux jets de gaz sym\u00e9triques pour Herbig-Haro 212<\/span>  <span class=\"meta-nav\">&rarr;<\/span><\/a><!-- AddThis Advanced Settings generic via filter on get_the_excerpt --><!-- AddThis Share Buttons generic via filter on get_the_excerpt --><\/p>\n","protected":false},"author":8,"featured_media":4030,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"categories":[84],"tags":[354,633,1149,1336,1337,637],"class_list":["post-4029","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ciel-etoile","tag-constellation-dorion","tag-eso","tag-herbig-haro","tag-hh-212","tag-isaac","tag-vlt"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.1 - 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