{"id":2791,"date":"2026-05-28T19:23:08","date_gmt":"2026-05-28T17:23:08","guid":{"rendered":"http:\/\/localhost\/messier\/m77"},"modified":"2026-06-09T15:46:17","modified_gmt":"2026-06-09T13:46:17","slug":"m77-2","status":"publish","type":"messier_object","link":"https:\/\/voyage-astrophoto.fr\/index.php\/messier\/m77-2\/","title":{"rendered":"M77 &#8211; Galaxie du Calmar"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">M77, \u00e9galement connue sous le nom de Galaxie du Calmar, fut d\u00e9couverte par Pierre M\u00e9chain en 1780 et ind\u00e9pendamment par Charles Messier le 21 octobre 1780. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Cette galaxie spirale interm\u00e9diaire (type SABa) est l&rsquo;une des premi\u00e8res galaxies de Seyfert identifi\u00e9es, avec un noyau actif tr\u00e8s lumineux (type Sy 2). <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Elle est situ\u00e9e \u00e0 environ 47 millions d&rsquo;ann\u00e9es-lumi\u00e8re et s&rsquo;\u00e9tend sur environ 100 000 ann\u00e9es-lumi\u00e8re. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">M77 poss\u00e8de un disque compact de gaz molecular et montre des signes de formation stellaire intense dans ses r\u00e9gions centrales. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Le trou noir supermassif en son centre a une masse estim\u00e9e \u00e0 environ 15 millions de masses solaires. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">La galaxie fait partie du m\u00eame groupe que NGC 1055, une autre galaxie spirale visible dans le m\u00eame champ. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><em>Sources: SEDS Messier Database, Wikipedia, NASA.<\/em><\/p>\n","protected":false},"featured_media":0,"template":"","meta":[],"class_list":["post-2791","messier_object","type-messier_object","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/voyage-astrophoto.fr\/index.php\/wp-json\/wp\/v2\/messier_object\/2791","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/voyage-astrophoto.fr\/index.php\/wp-json\/wp\/v2\/messier_object"}],"about":[{"href":"https:\/\/voyage-astrophoto.fr\/index.php\/wp-json\/wp\/v2\/types\/messier_object"}],"wp:attachment":[{"href":"https:\/\/voyage-astrophoto.fr\/index.php\/wp-json\/wp\/v2\/media?parent=2791"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}