{"id":1868,"date":"2015-02-17T06:03:28","date_gmt":"2015-02-17T06:03:28","guid":{"rendered":"https:\/\/blogs.futura-sciences.com\/feldmann\/?p=1868"},"modified":"2015-02-23T06:03:27","modified_gmt":"2015-02-23T06:03:27","slug":"le-telescope-vista-rend-la-nebuleuse-trifide-transparente","status":"publish","type":"post","link":"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/02\/17\/le-telescope-vista-rend-la-nebuleuse-trifide-transparente\/","title":{"rendered":"Le t\u00e9lescope Vista rend la n\u00e9buleuse Trifide transparente"},"content":{"rendered":"

Les amoureux du ciel nocturne auront bien du mal \u00e0 reconna\u00eetre sur cette image la c\u00e9l\u00e8bre n\u00e9buleuse Trifide, num\u00e9ro 20 dans le catalogue des objets n\u00e9buleux r\u00e9alis\u00e9 par l’astronome fran\u00e7ais Charles Messier<\/a> \u00e0 la fin du dix-huiti\u00e8me si\u00e8cle.<\/p>\n

\"messier20-vista\"<\/a><\/p>\n

La n\u00e9buleuse Messier 20 est pourtant bien pr\u00e9sente (nuage bleut\u00e9 l\u00e9g\u00e8rement sur la droite) sur ce clich\u00e9 que nous propose l’ESO<\/a>\u00a0(European Southern Observatory<\/em>). Si elle ne ressemble pas du tout aux images que nous connaissons d’elle, c’est tout simplement parce qu’elle a \u00e9t\u00e9 r\u00e9alis\u00e9e dans l’infrarouge par le t\u00e9lescope Vista <\/a>(Visible and Infrared Survey Telescope for Astronomy<\/em>).<\/p>\n

Situ\u00e9e dans la constellation du Sagittaire \u00e0 un peu plus de 5 000 ann\u00e9es-lumi\u00e8re de nous, la n\u00e9buleuse Trifide se pr\u00e9sente visuellement comme un nuage de poussi\u00e8re illumin\u00e9 par de jeunes \u00e9toiles et d\u00e9coup\u00e9 en trois parties distinctes par des chenaux sombres. Gr\u00e2ce au t\u00e9lescope Vista (dont le miroir principal a un diam\u00e8tre de 4,1 m\u00e8tres) il est possible de “traverser” cette poussi\u00e8re et de voir ce qu’il y a derri\u00e8re.<\/p>\n

D’une certaine fa\u00e7on Vista rend la n\u00e9buleuse Trifide transparente, ce qui a donn\u00e9 aux astronomes <\/a>l’occasion de faire une d\u00e9couverte : tr\u00e8s loin derri\u00e8re Messier 20, de l’autre c\u00f4t\u00e9 du bulbe central de la Voie lact\u00e9e<\/a>, ils ont d\u00e9nich\u00e9 deux \u00e9toiles variables de la famille des c\u00e9ph\u00e9ides<\/a>, les premi\u00e8res dans cette partie de notre Galaxie.<\/p>\n","protected":false},"excerpt":{"rendered":"

Les amoureux du ciel nocturne auront bien du mal \u00e0 reconna\u00eetre sur cette image la c\u00e9l\u00e8bre n\u00e9buleuse Trifide, num\u00e9ro 20 dans le catalogue des objets n\u00e9buleux r\u00e9alis\u00e9 par l’astronome fran\u00e7ais Charles Messier \u00e0 la fin du dix-huiti\u00e8me si\u00e8cle. La n\u00e9buleuse Messier 20 est pourtant bien pr\u00e9sente (nuage bleut\u00e9 l\u00e9g\u00e8rement sur la droite) sur ce clich\u00e9 … Continuer la lecture de Le t\u00e9lescope Vista rend la n\u00e9buleuse Trifide transparente<\/span> →<\/span><\/a><\/p>\n","protected":false},"author":8,"featured_media":1869,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"categories":[509],"tags":[94,836,133,496,633,112,586,834,833,835,166],"class_list":["post-1868","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-actualites","tag-astronome","tag-cepheide","tag-charles-messier","tag-constellation-du-sagittaire","tag-eso","tag-galaxie","tag-infrarouge","tag-messier-20","tag-nebuleuse-trifide","tag-telescope-vista","tag-voie-lactee"],"yoast_head":"\nLe t\u00e9lescope Vista rend la n\u00e9buleuse Trifide transparente<\/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:\/\/blogs.futura-sciences.com\/feldmann\/2015\/02\/17\/le-telescope-vista-rend-la-nebuleuse-trifide-transparente\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Le t\u00e9lescope Vista rend la n\u00e9buleuse Trifide transparente\" \/>\n<meta property=\"og:description\" content=\"Les amoureux du ciel nocturne auront bien du mal \u00e0 reconna\u00eetre sur cette image la c\u00e9l\u00e8bre n\u00e9buleuse Trifide, num\u00e9ro 20 dans le catalogue des objets n\u00e9buleux r\u00e9alis\u00e9 par l’astronome fran\u00e7ais Charles Messier \u00e0 la fin du dix-huiti\u00e8me si\u00e8cle. 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