{"id":17924,"date":"2023-05-23T16:58:36","date_gmt":"2023-05-23T16:58:36","guid":{"rendered":"https:\/\/blogs.futura-sciences.com\/feldmann\/?p=17924"},"modified":"2023-06-16T15:17:45","modified_gmt":"2023-06-16T15:17:45","slug":"la-supernova-sn-2023ixf-est-de-plus-en-plus-brillante","status":"publish","type":"post","link":"https:\/\/blogs.futura-sciences.com\/feldmann\/2023\/05\/23\/la-supernova-sn-2023ixf-est-de-plus-en-plus-brillante\/","title":{"rendered":"La supernova SN 2023ixf est de plus en plus brillante !"},"content":{"rendered":"<p><strong>D\u00e9nomm\u00e9e SN 2023ixf, la supernova apparue le 19 mai dans la galaxie du Moulinet Messier 101 ne cesse de gagner en luminosit\u00e9.\u00a0\u00a0<\/strong><\/p>\n<h5>Cataclysme cosmique :<\/h5>\n<p>La d\u00e9couverte d&#8217;une supernova (<a href=\"https:\/\/www.futura-sciences.com\/sciences\/definitions\/univers-supernova-60\/\" target=\"_blank\" rel=\"noopener\">d\u00e9finition<\/a>) est toujours un \u00e9v\u00e9nement pour les astronomes. Autant dire qu&#8217;ils sont en \u00e9moi depuis qu&#8217;on a signal\u00e9 une explosion stellaire dans la galaxie Messier 101 le 19 mai. <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2023\/05\/20\/une-supernova-decouverte-dans-la-galaxie-messier-101\/\" target=\"_blank\" rel=\"noopener\">Comme je vous l&#8217;expliquais ici<\/a>, c&#8217;est l&#8217;astronome japonais <a href=\"http:\/\/www.k-itagaki.jp\/\" target=\"_blank\" rel=\"noopener\">Koichi Itagaki<\/a> qui a \u00e9t\u00e9 le premier \u00e0 donner l&#8217;alerte. Depuis, les t\u00e9lescopes du monde entier sont mobilis\u00e9s pour \u00e9tudier le ph\u00e9nom\u00e8ne. Un int\u00e9r\u00eat accru quand on sait que la galaxie du Moulinet, Messier 101, n&#8217;est qu&#8217;\u00e0 22 millions d\u2019<a href=\"https:\/\/www.futura-sciences.com\/sciences\/definitions\/univers-annee-lumiere-17\/\" target=\"_blank\" rel=\"noopener\">ann\u00e9es-lumi\u00e8re<\/a> (AL) :<\/p>\n<p><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2023\/02\/messier101_carte.jpg\" rel=\"lightbox[17924]\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-17456\" src=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2023\/02\/messier101_carte-450x391.jpg\" alt=\"\" width=\"450\" height=\"391\" srcset=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2023\/02\/messier101_carte-450x391.jpg 450w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2023\/02\/messier101_carte-768x666.jpg 768w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2023\/02\/messier101_carte.jpg 885w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/a><\/p>\n<p>Un spectacle que tout possesseur d&#8217;un petit <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2023\/01\/11\/peut-on-choisir-son-premier-telescope-sans-se-tromper\/\" target=\"_blank\" rel=\"noopener\">t\u00e9lescope<\/a> peut aussi admirer en pointant cette galaxie dans la constellation de la\u00a0<a href=\"https:\/\/www.futura-sciences.com\/sciences\/questions-reponses\/astronomie-mythologie-legende-grande-ourse-7889\/\" target=\"_blank\" rel=\"noopener\">Grande Ourse<\/a>. Une fois Messier 101 localis\u00e9e, la carte propos\u00e9e par l&#8217;<a href=\"https:\/\/www.aavso.org\/\" target=\"_blank\" rel=\"noopener\">AAVSO<\/a> vous permettra de rep\u00e9rer la SN :<\/p>\n<p><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2023\/05\/SNcarte.jpg\" rel=\"lightbox[17924]\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-17926\" src=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2023\/05\/SNcarte-362x450.jpg\" alt=\"\" width=\"362\" height=\"450\" srcset=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2023\/05\/SNcarte-362x450.jpg 362w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2023\/05\/SNcarte.jpg 768w\" sizes=\"auto, (max-width: 362px) 100vw, 362px\" \/><\/a><\/p>\n<p><!--more--><\/p>\n<h5>Vous avez dit petit t\u00e9lescope ?<\/h5>\n<p>La supernova avait une <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2017\/05\/06\/quest-lechelle-magnitudes-astronomie\/\" target=\"_blank\" rel=\"noopener\">magnitude<\/a> de 14,9 au moment de sa d\u00e9couverte le 19 mai. Une situation qui a beaucoup \u00e9volu\u00e9 puisque la derni\u00e8re estimation d&#8217;\u00e9clat sur <a href=\"https:\/\/www.rochesterastronomy.org\/supernova.html\" target=\"_blank\" rel=\"noopener\"><em>Latest Supernovae<\/em><\/a> est de 10,8. Une luminosit\u00e9 qui la rend d\u00e9sormais accessible visuellement aux petits t\u00e9lescopes d&#8217;amateurs ! \u00c0 condition bien s\u00fbr d&#8217;avoir un ciel bien d\u00e9gag\u00e9 et loin de toute <a href=\"https:\/\/www.futura-sciences.com\/sciences\/questions-reponses\/espace-quest-ce-pollution-lumineuse-12\/\" target=\"_blank\" rel=\"noopener\">pollution lumineuse<\/a>. La spectaculaire mont\u00e9e en \u00e9clat de la SN est d&#8217;ailleurs parfaitement visible sur la succession d&#8217;images pr\u00e9sent\u00e9es par <a href=\"https:\/\/www.facebook.com\/photo?fbid=10160526271799111&amp;set=gm.1938467943178911&amp;idorvanity=498306217195098\" target=\"_blank\" rel=\"noopener\">Martin Bracken<\/a> :<\/p>\n<p><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2023\/05\/SNprogression-scaled.jpg\" rel=\"lightbox[17924]\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-17927\" src=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2023\/05\/SNprogression-450x142.jpg\" alt=\"\" width=\"450\" height=\"142\" srcset=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2023\/05\/SNprogression-450x142.jpg 450w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2023\/05\/SNprogression-1024x324.jpg 1024w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2023\/05\/SNprogression-768x243.jpg 768w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2023\/05\/SNprogression-1536x486.jpg 1536w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2023\/05\/SNprogression-2048x647.jpg 2048w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/a><\/p>\n<p>La derni\u00e8re supernova observ\u00e9e dans la galaxie du Moulinet en 2011 avait atteint la magnitude de 9,9. SN 2023ixf va-t-elle d\u00e9passer cette valeur ? Pour le savoir, sortez vos t\u00e9lescopes et transportez-vous \u00e0 22 millions d&#8217;ann\u00e9es-lumi\u00e8re pour assister en direct \u00e0 ce cataclysme cosmique !<\/p>\n<p><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2023\/05\/SNphoto.jpg\" rel=\"lightbox[17924]\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-17928\" src=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2023\/05\/SNphoto-450x302.jpg\" alt=\"\" width=\"450\" height=\"302\" srcset=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2023\/05\/SNphoto-450x302.jpg 450w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2023\/05\/SNphoto.jpg 749w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/a><\/p>\n<h5>Vous pourriez aimer :<\/h5>\n<ul>\n<li><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2021\/04\/16\/sixieme-supernova-pour-la-galaxie-spirale-ngc-3147\/\" target=\"_blank\" rel=\"noopener\">Une sixi\u00e8me supernova explose dans la galaxie NGC 3147<\/a><\/li>\n<li><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/09\/03\/lecharpe-cosmique-laissee-par-la-supernova-sn-1006\/\" target=\"_blank\" rel=\"noopener\">Voici l\u2019\u00e9charpe cosmique laiss\u00e9e par la supernova SN 1006<\/a><\/li>\n<li><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/12\/18\/snr-0519-un-remanent-de-supernova-tout-en-finesse\/\" target=\"_blank\" rel=\"noopener\">SNR 0519, un r\u00e9manent de supernova tout en finesse<\/a><\/li>\n<\/ul>\n<p>Suivez l\u2019actualit\u00e9 astronomique et d\u00e9couvrez mes images du ciel en vous abonnant \u00e0 Cielmania sur\u00a0<a href=\"https:\/\/www.facebook.com\/cielmania\/\" target=\"_blank\" rel=\"noopener noreferrer\">Facebook<\/a>.<\/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>D\u00e9nomm\u00e9e SN 2023ixf, la supernova apparue le 19 mai dans la galaxie du Moulinet Messier 101 ne cesse de gagner en luminosit\u00e9.\u00a0\u00a0 Cataclysme cosmique : La d\u00e9couverte d&#8217;une supernova (d\u00e9finition) est toujours un \u00e9v\u00e9nement pour les astronomes. Autant dire qu&#8217;ils sont en \u00e9moi depuis qu&#8217;on a signal\u00e9 une explosion stellaire dans la galaxie Messier 101 &hellip; <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2023\/05\/23\/la-supernova-sn-2023ixf-est-de-plus-en-plus-brillante\/\" class=\"more-link\">Continuer la lecture de <span class=\"screen-reader-text\">La supernova SN 2023ixf est de plus en plus brillante !<\/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":17925,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"categories":[509],"tags":[3367,3368,3414],"class_list":["post-17924","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-actualites","tag-galaxie-du-moulinet","tag-messier-101","tag-sn-2023ixf"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.1 - 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