{"id":1494,"date":"2019-08-19T17:36:00","date_gmt":"2019-08-19T17:36:00","guid":{"rendered":"https:\/\/astro.uc.cl\/charlas\/understanding-fomalhaut-as-a-cooper-pair-dr-fabo-feng-carnegie-department-of-terrestrial-magnetism\/"},"modified":"2022-07-21T19:34:07","modified_gmt":"2022-07-21T19:34:07","slug":"understanding-fomalhaut-as-a-cooper-pair-dr-fabo-feng-carnegie-department-of-terrestrial-magnetism","status":"publish","type":"charlas","link":"https:\/\/astro.uc.cl\/en\/charlas\/understanding-fomalhaut-as-a-cooper-pair-dr-fabo-feng-carnegie-department-of-terrestrial-magnetism\/","title":{"rendered":"Understanding Fomalhaut as a Cooper pair (Dr. Fabo Feng; Carnegie Department of Terrestrial Magnetism)"},"content":{"rendered":"\n<p>Fomalhaut is a nearby stellar system and has been found to be a triple based on astrometric observations. With new radial velocity and astrometric data, we study the association between Fomalhaut A, B, and C in a Bayesian framework, finding that the system is gravitationally bound or at least associated. Based on simulations of the system, we find that Fomalhaut C can be easily destabilized through combined perturbations from the Galactic tide and stellar encounters. Considering that observing the disruption of a triple is probably rare in the solar neighbourhood, we conclude that Fomalhaut C is a so-called \u2018gravitational pair\u2019 of Fomalhaut A and B. Like the Cooper pair mechanism in superconductors, this phenomenon only appears once the orbital energy of a component becomes comparable with the energy fluctuations caused by the environment. Based on our simulations, we find (1) an upper limit of 8 km\/s velocity difference is appropriate when selecting binary candidates, and (2) an empirical formula for the escape radius, which is more appropriate than tidal radius when measuring the stability of wide binaries.<\/p>\n","protected":false},"featured_media":0,"template":"","meta":[],"categorias_charlas":[59],"class_list":["post-1494","charlas","type-charlas","status-publish","hentry","categorias_charlas-seminarios"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.8 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Understanding Fomalhaut as a Cooper pair (Dr. Fabo Feng; Carnegie Department of Terrestrial Magnetism) - Instituto de Astrof\u00edsica<\/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:\/\/astro.uc.cl\/en\/charlas\/understanding-fomalhaut-as-a-cooper-pair-dr-fabo-feng-carnegie-department-of-terrestrial-magnetism\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Understanding Fomalhaut as a Cooper pair (Dr. Fabo Feng; Carnegie Department of Terrestrial Magnetism) - Instituto de Astrof\u00edsica\" \/>\n<meta property=\"og:description\" content=\"Fomalhaut is a nearby stellar system and has been found to be a triple based on astrometric observations. With new radial velocity and astrometric data, we study the association between Fomalhaut A, B, and C in a Bayesian framework, finding that the system is gravitationally bound or at least associated. Based on simulations of the [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/astro.uc.cl\/en\/charlas\/understanding-fomalhaut-as-a-cooper-pair-dr-fabo-feng-carnegie-department-of-terrestrial-magnetism\/\" \/>\n<meta property=\"og:site_name\" content=\"Instituto de Astrof\u00edsica\" \/>\n<meta property=\"article:modified_time\" content=\"2022-07-21T19:34:07+00:00\" \/>\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:\/\/astro.uc.cl\/en\/charlas\/understanding-fomalhaut-as-a-cooper-pair-dr-fabo-feng-carnegie-department-of-terrestrial-magnetism\/\",\"url\":\"https:\/\/astro.uc.cl\/en\/charlas\/understanding-fomalhaut-as-a-cooper-pair-dr-fabo-feng-carnegie-department-of-terrestrial-magnetism\/\",\"name\":\"Understanding Fomalhaut as a Cooper pair (Dr. Fabo Feng; Carnegie Department of Terrestrial Magnetism) - Instituto de Astrof\u00edsica\",\"isPartOf\":{\"@id\":\"https:\/\/astro.uc.cl\/en\/#website\"},\"datePublished\":\"2019-08-19T17:36:00+00:00\",\"dateModified\":\"2022-07-21T19:34:07+00:00\",\"breadcrumb\":{\"@id\":\"https:\/\/astro.uc.cl\/en\/charlas\/understanding-fomalhaut-as-a-cooper-pair-dr-fabo-feng-carnegie-department-of-terrestrial-magnetism\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/astro.uc.cl\/en\/charlas\/understanding-fomalhaut-as-a-cooper-pair-dr-fabo-feng-carnegie-department-of-terrestrial-magnetism\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/astro.uc.cl\/en\/charlas\/understanding-fomalhaut-as-a-cooper-pair-dr-fabo-feng-carnegie-department-of-terrestrial-magnetism\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Portada\",\"item\":\"https:\/\/astro.uc.cl\/en\/inicio\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Charlas\",\"item\":\"https:\/\/astro.uc.cl\/en\/charlas\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Understanding Fomalhaut as a Cooper pair (Dr. Fabo Feng; Carnegie Department of Terrestrial Magnetism)\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/astro.uc.cl\/en\/#website\",\"url\":\"https:\/\/astro.uc.cl\/en\/\",\"name\":\"Instituto de Astrof\u00edsica\",\"description\":\"Facultad de F\u00edsica\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/astro.uc.cl\/en\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Understanding Fomalhaut as a Cooper pair (Dr. Fabo Feng; Carnegie Department of Terrestrial Magnetism) - Instituto de Astrof\u00edsica","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/astro.uc.cl\/en\/charlas\/understanding-fomalhaut-as-a-cooper-pair-dr-fabo-feng-carnegie-department-of-terrestrial-magnetism\/","og_locale":"en_US","og_type":"article","og_title":"Understanding Fomalhaut as a Cooper pair (Dr. Fabo Feng; Carnegie Department of Terrestrial Magnetism) - Instituto de Astrof\u00edsica","og_description":"Fomalhaut is a nearby stellar system and has been found to be a triple based on astrometric observations. With new radial velocity and astrometric data, we study the association between Fomalhaut A, B, and C in a Bayesian framework, finding that the system is gravitationally bound or at least associated. Based on simulations of the [&hellip;]","og_url":"https:\/\/astro.uc.cl\/en\/charlas\/understanding-fomalhaut-as-a-cooper-pair-dr-fabo-feng-carnegie-department-of-terrestrial-magnetism\/","og_site_name":"Instituto de Astrof\u00edsica","article_modified_time":"2022-07-21T19:34:07+00:00","twitter_card":"summary_large_image","twitter_misc":{"Est. reading time":"1 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/astro.uc.cl\/en\/charlas\/understanding-fomalhaut-as-a-cooper-pair-dr-fabo-feng-carnegie-department-of-terrestrial-magnetism\/","url":"https:\/\/astro.uc.cl\/en\/charlas\/understanding-fomalhaut-as-a-cooper-pair-dr-fabo-feng-carnegie-department-of-terrestrial-magnetism\/","name":"Understanding Fomalhaut as a Cooper pair (Dr. Fabo Feng; Carnegie Department of Terrestrial Magnetism) - Instituto de Astrof\u00edsica","isPartOf":{"@id":"https:\/\/astro.uc.cl\/en\/#website"},"datePublished":"2019-08-19T17:36:00+00:00","dateModified":"2022-07-21T19:34:07+00:00","breadcrumb":{"@id":"https:\/\/astro.uc.cl\/en\/charlas\/understanding-fomalhaut-as-a-cooper-pair-dr-fabo-feng-carnegie-department-of-terrestrial-magnetism\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/astro.uc.cl\/en\/charlas\/understanding-fomalhaut-as-a-cooper-pair-dr-fabo-feng-carnegie-department-of-terrestrial-magnetism\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/astro.uc.cl\/en\/charlas\/understanding-fomalhaut-as-a-cooper-pair-dr-fabo-feng-carnegie-department-of-terrestrial-magnetism\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Portada","item":"https:\/\/astro.uc.cl\/en\/inicio\/"},{"@type":"ListItem","position":2,"name":"Charlas","item":"https:\/\/astro.uc.cl\/en\/charlas\/"},{"@type":"ListItem","position":3,"name":"Understanding Fomalhaut as a Cooper pair (Dr. Fabo Feng; Carnegie Department of Terrestrial Magnetism)"}]},{"@type":"WebSite","@id":"https:\/\/astro.uc.cl\/en\/#website","url":"https:\/\/astro.uc.cl\/en\/","name":"Instituto de Astrof\u00edsica","description":"Facultad de F\u00edsica","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/astro.uc.cl\/en\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"}]}},"_links":{"self":[{"href":"https:\/\/astro.uc.cl\/en\/wp-json\/wp\/v2\/charlas\/1494","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/astro.uc.cl\/en\/wp-json\/wp\/v2\/charlas"}],"about":[{"href":"https:\/\/astro.uc.cl\/en\/wp-json\/wp\/v2\/types\/charlas"}],"wp:attachment":[{"href":"https:\/\/astro.uc.cl\/en\/wp-json\/wp\/v2\/media?parent=1494"}],"wp:term":[{"taxonomy":"categorias_charlas","embeddable":true,"href":"https:\/\/astro.uc.cl\/en\/wp-json\/wp\/v2\/categorias_charlas?post=1494"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}