{"id":11336,"date":"2019-10-28T15:21:58","date_gmt":"2019-10-28T15:21:58","guid":{"rendered":"https:\/\/blogs.futura-sciences.com\/feldmann\/?p=11336"},"modified":"2019-11-09T09:03:44","modified_gmt":"2019-11-09T09:03:44","slug":"choisissez-un-nom-pour-lexoplanete-hd8574b-et-son-etoile","status":"publish","type":"post","link":"https:\/\/blogs.futura-sciences.com\/feldmann\/2019\/10\/28\/choisissez-un-nom-pour-lexoplanete-hd8574b-et-son-etoile\/","title":{"rendered":"Choisissez un nom pour l&#8217;exoplan\u00e8te HD8574b et son \u00e9toile"},"content":{"rendered":"<p><strong>L&#8217;Union astronomique internationale (UAI) propose \u00e0 chaque pays de nommer une exoplan\u00e8te et son \u00e9toile. Pour la France il s&#8217;agit de HD8574b.\u00a0\u00a0<\/strong><\/p>\n<h5>L&#8217;UAI f\u00eate ses 100 ans :<\/h5>\n<p>2019 est une ann\u00e9e riche en anniversaires dans le domaine de l&#8217;espace. Les 50 ans du Premier Homme sur la Lune (<a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2019\/07\/12\/on-the-moon-again-deux-soirees-en-hommage-a-la-lune\/\" target=\"_blank\" rel=\"noopener noreferrer\"><em>On The Moon Again<\/em><\/a>), les 100 ans de <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2019\/05\/25\/leclipse-deinstein-fete-ses-100-ans\/\" target=\"_blank\" rel=\"noopener noreferrer\">l&#8217;\u00e9clipse d&#8217;Einstein<\/a> et de l&#8217;Union astronomique internationale. Cette v\u00e9n\u00e9rable institution a en effet vu le jour en 1919 gr\u00e2ce \u00e0 la t\u00e9nacit\u00e9 de l\u2019astronome fran\u00e7ais\u00a0<a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2016\/03\/01\/en-video-lobservatoire-du-pic-du-midi-sous-la-neige\/\" target=\"_blank\" rel=\"noopener noreferrer\">Benjamin Baillaud<\/a> qui en fut le premier directeur. Comme l&#8217;explique l\u2019astrophysicienne n\u00e9erlandaise Ewine van Dishoeck, \u00e9lue pr\u00e9sidente de l\u2019UAI en 2015, \u00ab c<em>e centi\u00e8me anniversaire offre une merveilleuse occasion de mettre en lumi\u00e8re tout ce que l\u2019astronomie a pu nous apporter au cours du si\u00e8cle pass\u00e9 en mati\u00e8re de science, de technologie ou encore d\u2019inspiration. Faisons en sorte qu\u2019ensemble, nous donnions le ton pour les 100 prochaines ann\u00e9es!\u00a0\u00bb<\/em><\/p>\n<figure id=\"attachment_10114\" aria-describedby=\"caption-attachment-10114\" style=\"width: 450px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2019\/01\/iau.jpg\" rel=\"lightbox[11336]\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-10114\" src=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2019\/01\/iau-450x265.jpg\" alt=\"\" width=\"450\" height=\"265\" srcset=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2019\/01\/iau-450x265.jpg 450w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2019\/01\/iau-768x452.jpg 768w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2019\/01\/iau-1024x602.jpg 1024w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2019\/01\/iau.jpg 1107w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/a><figcaption id=\"caption-attachment-10114\" class=\"wp-caption-text\">S\u00e9ance m\u00e9morable du 24 ao\u00fbt 2006 : l\u2019UAI d\u00e9classe Pluton de son rang de plan\u00e8te. \u00a9 IAU<\/figcaption><\/figure>\n<p>Pour f\u00eater son centenaire, l&#8217;UAI (IAU en anglais) lance une campagne mondiale intitul\u00e9e <a href=\"http:\/\/www.nommez-une-exoplanete.fr\/\" target=\"_blank\" rel=\"noopener noreferrer\">Nommez une exoplan\u00e8te<\/a> (<a href=\"http:\/\/www.nameexoworlds.iau.org\/\" target=\"_blank\" rel=\"noopener noreferrer\"><em>IAU100-NameExoWorlds<\/em><\/a>). <!--more--><\/p>\n<h5>Comment rep\u00e9rer HD8574 :<\/h5>\n<p>Chaque pays (ils sont plus de 120 \u00e0 participer) se voit attribuer une \u00e9toile et son exoplan\u00e8te. Pour la France il s&#8217;agit de l&#8217;\u00e9toile HD8574 situ\u00e9e \u00e0 environ 150 ann\u00e9es-lumi\u00e8re de nous dans la constellation des Poissons. Avec sa <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2017\/05\/06\/quest-lechelle-magnitudes-astronomie\/\" target=\"_blank\" rel=\"noopener noreferrer\">magnitude<\/a> de 7 vous devrez utiliser une <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2017\/12\/10\/longue-vue-bon-choix-debuter-astronomie\/\" target=\"_blank\" rel=\"noopener noreferrer\">longue-vue<\/a> pour la d\u00e9nicher. Elle se situe au sud de la belle <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/01\/09\/le-telescope-hubble-zoome-sur-la-galaxie-d-andromede\/\" target=\"_blank\" rel=\"noopener noreferrer\">galaxie d&#8217;Androm\u00e8de<\/a> et \u00e0 l&#8217;ouest de la <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2019\/04\/26\/la-galaxie-du-triangle-messier-33-en-haute-resolution\/\" target=\"_blank\" rel=\"noopener noreferrer\">galaxie du Triangle<\/a>. Orientez-vous \u00e0 partir du <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2014\/08\/22\/andromede-pegase\/\" target=\"_blank\" rel=\"noopener noreferrer\">Carr\u00e9 de P\u00e9gase<\/a> qui se trouve actuellement haut dans le ciel direction E-S-E en d\u00e9but de nuit.<\/p>\n<figure id=\"attachment_11339\" aria-describedby=\"caption-attachment-11339\" style=\"width: 450px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2019\/10\/exo2-1.jpg\" rel=\"lightbox[11336]\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-11339\" src=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2019\/10\/exo2-1-450x269.jpg\" alt=\"\" width=\"450\" height=\"269\" srcset=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2019\/10\/exo2-1-450x269.jpg 450w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2019\/10\/exo2-1-768x459.jpg 768w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2019\/10\/exo2-1-1024x612.jpg 1024w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2019\/10\/exo2-1.jpg 1128w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/a><figcaption id=\"caption-attachment-11339\" class=\"wp-caption-text\">Carte de rep\u00e9rage \u00e0 utiliser pour localiser l&#8217;\u00e9toile HD8574. \u00a9 F. Mottez\/Stellarium<\/figcaption><\/figure>\n<h5>Portrait d&#8217;une exoplan\u00e8te :<\/h5>\n<p>C&#8217;est en 2002 que les astronomes ont d\u00e9nich\u00e9 une exoplan\u00e8te autour de cette \u00e9toile : elle a \u00e9t\u00e9 num\u00e9rot\u00e9e HD8574b. La d\u00e9couverte a \u00e9t\u00e9 r\u00e9alis\u00e9e avec le t\u00e9lescope de 193 centim\u00e8tres de l&#8217;<a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2019\/06\/06\/en-haute-provence-un-telescope-traque-les-exoplanetes\/\" target=\"_blank\" rel=\"noopener noreferrer\">Observatoire de Haute-Provence<\/a>. Gr\u00e2ce \u00e0 cet instrument <a href=\"https:\/\/www.franceinter.fr\/emissions\/la-tete-au-carre\/la-tete-au-carre-06-octobre-2015\" target=\"_blank\" rel=\"noopener noreferrer\">Michel Mayor et Didier Queloz<\/a> avaient pu d\u00e9tecter en 1995 la premi\u00e8re plan\u00e8te extrasolaire <a href=\"https:\/\/www.futura-sciences.com\/sciences\/actualites\/planetes-extrasolaires-premiere-fois-on-repere-lumiere-exoplanete-51-pegasi-b-57991\/\" target=\"_blank\" rel=\"noopener noreferrer\">51 Pegasi b<\/a> (d\u00e9couverte qui leur a valu le <a href=\"https:\/\/www.futura-sciences.com\/sciences\/actualites\/exoplanetes-prix-nobel-physique-2019-recompense-pionniers-exoplanetes-big-bang-77844\/\" target=\"_blank\" rel=\"noopener noreferrer\">Prix Nobel de physique<\/a> il y a quelques jours). HD8574b est une g\u00e9ante gazeuse environ deux fois plus massive que <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2019\/08\/31\/spectacle-celeste-jupiter-a-proximite-de-letoile-supergeante-antares\/\" target=\"_blank\" rel=\"noopener noreferrer\">Jupiter<\/a>. Elle parcourt son orbite autour de HD8574 en un peu plus de 7 mois.<\/p>\n<figure id=\"attachment_11337\" aria-describedby=\"caption-attachment-11337\" style=\"width: 450px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2019\/10\/exo1.jpg\" rel=\"lightbox[11336]\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-11337\" src=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2019\/10\/exo1-450x271.jpg\" alt=\"\" width=\"450\" height=\"271\" srcset=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2019\/10\/exo1-450x271.jpg 450w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2019\/10\/exo1-768x462.jpg 768w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2019\/10\/exo1-1024x616.jpg 1024w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2019\/10\/exo1.jpg 1500w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/a><figcaption id=\"caption-attachment-11337\" class=\"wp-caption-text\">Vue d&#8217;artiste d&#8217;une \u00e9toile et d&#8217;une exoplan\u00e8te gazeuse semblable \u00e0 HD8574b. \u00a9 ESO<\/figcaption><\/figure>\n<h5>Votez pour un couple :<\/h5>\n<p>L&#8217;UAI vous propose de choisir un couple de noms pour d\u00e9signer HD8574 et son exoplan\u00e8te. Il vous suffit pour cela de compl\u00e9ter <a href=\"https:\/\/questionnaires.obspm.fr\/index.php\/712813?\" target=\"_blank\" rel=\"noopener noreferrer\">ce questionnaire<\/a> avant le 14 novembre. Vous pouvez s\u00e9lectionner des ogres(Pantagruel et Gargantua), des amoureux (Ab\u00e9lard et H\u00e9lo\u00efse), des dieux et d\u00e9esses gaulois (B\u00e9lisama et B\u00e9l\u00e9nos, Cercius et Grannos Cercius, Alisanos et Grannos, ou encore Aveta et Adsullata). Mais vous leur pr\u00e9f\u00e9rerez peut-\u00eatre des dieux sum\u00e9riens (Enki et Ninhursag) ou \u00e9chapp\u00e9s de la mythologie nordique (Freyja et Nj\u00f6rd).<\/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>L&#8217;Union astronomique internationale (UAI) propose \u00e0 chaque pays de nommer une exoplan\u00e8te et son \u00e9toile. Pour la France il s&#8217;agit de HD8574b.\u00a0\u00a0 L&#8217;UAI f\u00eate ses 100 ans : 2019 est une ann\u00e9e riche en anniversaires dans le domaine de l&#8217;espace. Les 50 ans du Premier Homme sur la Lune (On The Moon Again), les 100 &hellip; <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2019\/10\/28\/choisissez-un-nom-pour-lexoplanete-hd8574b-et-son-etoile\/\" class=\"more-link\">Continuer la lecture de <span class=\"screen-reader-text\">Choisissez un nom pour l&#8217;exoplan\u00e8te HD8574b et son \u00e9toile<\/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":11337,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"categories":[87],"tags":[1317,110,2743,2456],"class_list":["post-11336","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-les-hommes-et-le-ciel","tag-constellation-des-poissons","tag-exoplanete","tag-hd8574b","tag-uai"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Choisissez un nom pour l&#039;exoplan\u00e8te HD8574b et son \u00e9toile<\/title>\n<meta name=\"description\" content=\"L&#039;Union astronomique internationale (UAI) propose \u00e0 chaque pays de nommer une exoplan\u00e8te et son \u00e9toile. 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