{"id":85480,"date":"2025-02-12T19:49:59","date_gmt":"2025-02-12T18:49:59","guid":{"rendered":"https:\/\/wfa.uwr.edu.pl\/?post_type=wydarzenia&p=85480"},"modified":"2025-02-12T19:51:12","modified_gmt":"2025-02-12T18:51:12","slug":"the-mysterious-gamma-cas-stars","status":"publish","type":"wydarzenia","link":"https:\/\/wfa.uwr.edu.pl\/en\/wydarzenia\/the-mysterious-gamma-cas-stars\/","title":{"rendered":"The mysterious gamma Cas stars"},"content":{"rendered":"\n

Abstract:<\/h4>\n\n\n\n

Long thought to be a prototype of Be stars, the first detected case of such objects, gamma Cas, was found to be actually atypical amongst them! Indeed, it emits very bright and extremely hard X-rays with a luminosity intermediate between that of normal massive stars and that of high-massX-ray binaries. Recent efforts in X-ray monitorings have revealed that such objects are not uncommon hence gamma Cas stars are important ionizing sources, particularly at low metallicities where Be stars abound. The properties of these stars will be reviewed using the latest observational results.<\/h5>\n\n\n\n

<\/p>\n","protected":false},"excerpt":{"rendered":"

Our guest will be dr Ya\u00ebl Naz\u00e9 of the University of Liege.<\/p>\n","protected":false},"author":2022,"featured_media":85495,"parent":0,"template":"","meta":{"_acf_changed":false,"inline_featured_image":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[264],"tags":[],"class_list":["post-85480","wydarzenia","type-wydarzenia","status-publish","has-post-thumbnail","hentry","category-wydarzenia"],"featured_image_urls_v2":{"full":["https:\/\/wfa.uwr.edu.pl\/wp-content\/uploads\/sites\/216\/2025\/02\/Navi-star.jpg",1626,879,false],"thumbnail":["https:\/\/wfa.uwr.edu.pl\/wp-content\/uploads\/sites\/216\/2025\/02\/Navi-star-150x150.jpg",150,150,true],"medium":["https:\/\/wfa.uwr.edu.pl\/wp-content\/uploads\/sites\/216\/2025\/02\/Navi-star-300x162.jpg",300,162,true],"medium_large":["https:\/\/wfa.uwr.edu.pl\/wp-content\/uploads\/sites\/216\/2025\/02\/Navi-star-768x415.jpg",768,415,true],"large":["https:\/\/wfa.uwr.edu.pl\/wp-content\/uploads\/sites\/216\/2025\/02\/Navi-star-1024x554.jpg",1024,554,true],"1536x1536":["https:\/\/wfa.uwr.edu.pl\/wp-content\/uploads\/sites\/216\/2025\/02\/Navi-star-1536x830.jpg",1536,830,true],"2048x2048":["https:\/\/wfa.uwr.edu.pl\/wp-content\/uploads\/sites\/216\/2025\/02\/Navi-star.jpg",1626,879,false],"menu-24x24":["https:\/\/wfa.uwr.edu.pl\/wp-content\/uploads\/sites\/216\/2025\/02\/Navi-star-24x13.jpg",24,13,true],"menu-36x36":["https:\/\/wfa.uwr.edu.pl\/wp-content\/uploads\/sites\/216\/2025\/02\/Navi-star-36x19.jpg",36,19,true],"menu-48x48":["https:\/\/wfa.uwr.edu.pl\/wp-content\/uploads\/sites\/216\/2025\/02\/Navi-star-48x26.jpg",48,26,true]},"post_excerpt_stackable_v2":"

Our guest will be dr Ya\u00ebl Naz\u00e9 of the University of Liege.<\/p>\n","category_list_v2":"Wydarzenia<\/a>","author_info_v2":{"name":"Joanna Molenda-\u017bakowicz","url":"https:\/\/wfa.uwr.edu.pl\/en\/author\/jmolendazakowicz\/"},"comments_num_v2":"0 comments","acf":[],"yoast_head":"\nThe mysterious gamma Cas stars - Faculty of Physics and Astronomy<\/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:\/\/wfa.uwr.edu.pl\/wydarzenia\/the-mysterious-gamma-cas-stars\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"The mysterious gamma Cas stars - Faculty of Physics and Astronomy\" \/>\n<meta property=\"og:description\" content=\"Our guest will be dr Ya\u00ebl Naz\u00e9 of the University of Liege.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/wfa.uwr.edu.pl\/wydarzenia\/the-mysterious-gamma-cas-stars\/\" \/>\n<meta property=\"og:site_name\" content=\"Faculty of Physics and Astronomy\" \/>\n<meta property=\"article:modified_time\" content=\"2025-02-12T18:51:12+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/wfa.uwr.edu.pl\/wp-content\/uploads\/sites\/216\/2025\/02\/Navi-star.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1626\" \/>\n\t<meta property=\"og:image:height\" content=\"879\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/wfa.uwr.edu.pl\/wydarzenia\/the-mysterious-gamma-cas-stars\/\",\"url\":\"https:\/\/wfa.uwr.edu.pl\/wydarzenia\/the-mysterious-gamma-cas-stars\/\",\"name\":\"The mysterious gamma Cas stars - 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