{"id":453,"date":"2021-04-30T13:39:55","date_gmt":"2021-04-30T11:39:55","guid":{"rendered":"https:\/\/sites-lira.obspm.fr\/the-good-vibrations-seminars\/?post_type=eap_event&#038;p=453"},"modified":"2022-01-27T15:08:05","modified_gmt":"2022-01-27T14:08:05","slug":"good-vibrations-seminar-11-thomas-steindl-university-of-innsbruck-institute-for-astro-and-particle-physics","status":"publish","type":"eap_event","link":"https:\/\/sites-lira.obspm.fr\/the-good-vibrations-seminars\/events\/good-vibrations-seminar-11-thomas-steindl-university-of-innsbruck-institute-for-astro-and-particle-physics\/","title":{"rendered":"Good Vibrations Seminar #11: Thomas Steindl (University of Innsbruck, Institute for Astro- and Particle Physics, Austria)"},"content":{"rendered":"\n<figure class=\"wp-block-embed-youtube wp-block-embed is-type-video is-provider-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" width=\"870\" height=\"489\" src=\"https:\/\/www.youtube.com\/embed\/FD2JXgFXdoM?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><em>Tidally perturbed pulsations in the pre-main sequence delta Scuti binary RS Cha<\/em><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/sites-lira.obspm.fr\/the-good-vibrations-seminars\/people\/the-speakers\/\">Thomas Steindl (University of Innsbruck, Institute for Astro- and Particle Physics)<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">We present an in-depth analysis of TESS observations of the pre-main sequence \\delta Scuti binary RS Cha. RS Cha is an eclipsing binary system with well known stellar parameters that is synchronised and circularised. In a such a system, the equilibrium tide is expected to perturb the self-excited pulsation modes.<br>\nWe used PHOEBE to remove the eclipsing binary signal from the TESS light curve to model the residuals with superposition of linear modes. Our investigation of the pulsations uncover mulitplets split by (twice) the orbital frequencies. We use the theory of tidally perturbed modes to identify the pulsation modes and verify previous spectroscopic mode identification for a prominent l=2 or l=3 mode.<br>\nOur results suggest that RS Cha is an ideal candidate to test the theory of tidally perturbed modes within the framework of asteroseismic modelling.<br>\nFurthermore, it is the first pre-main sequence object showing tidal effects on its pulsation spectrum. As such, RS Cha will be a keystone in the future of pre-main sequence asteroseismology.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tidally perturbed pulsations in the pre-main sequence delta Scuti binary RS Cha Thomas Steindl (University of Innsbruck, Institute for Astro-<\/p>\n<p class=\"readmore\"><a href=\"https:\/\/sites-lira.obspm.fr\/the-good-vibrations-seminars\/events\/good-vibrations-seminar-11-thomas-steindl-university-of-innsbruck-institute-for-astro-and-particle-physics\/\" title=\"Read Good Vibrations Seminar #11: Thomas Steindl (University of Innsbruck, Institute for Astro- and Particle Physics, Austria)\">Read more &raquo;<\/a><\/p>\n","protected":false},"author":73,"featured_media":455,"comment_status":"open","ping_status":"closed","template":"","categories":[],"class_list":["post-453","eap_event","type-eap_event","status-publish","has-post-thumbnail","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Good Vibrations Seminar #11: Thomas Steindl (University of Innsbruck, Institute for Astro- and Particle Physics, Austria) - The good vibrations seminars series<\/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:\/\/sites-lira.obspm.fr\/the-good-vibrations-seminars\/events\/good-vibrations-seminar-11-thomas-steindl-university-of-innsbruck-institute-for-astro-and-particle-physics\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Good Vibrations Seminar #11: Thomas Steindl (University of Innsbruck, Institute for Astro- and Particle Physics, Austria) - The good vibrations seminars series\" \/>\n<meta property=\"og:description\" content=\"Tidally perturbed pulsations in the pre-main sequence delta Scuti binary RS Cha Thomas Steindl (University of Innsbruck, Institute for Astro-Read more &raquo;\" \/>\n<meta property=\"og:url\" content=\"https:\/\/sites-lira.obspm.fr\/the-good-vibrations-seminars\/events\/good-vibrations-seminar-11-thomas-steindl-university-of-innsbruck-institute-for-astro-and-particle-physics\/\" \/>\n<meta property=\"og:site_name\" content=\"The good vibrations seminars series\" \/>\n<meta property=\"article:modified_time\" content=\"2022-01-27T14:08:05+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/sites-lira.obspm.fr\/the-good-vibrations-seminars\/files\/2021\/04\/Thomas_Steindl_profilbild.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"553\" \/>\n\t<meta property=\"og:image:height\" content=\"553\" \/>\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=\"Estimated 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:\\\/\\\/sites-lira.obspm.fr\\\/the-good-vibrations-seminars\\\/events\\\/good-vibrations-seminar-11-thomas-steindl-university-of-innsbruck-institute-for-astro-and-particle-physics\\\/\",\"url\":\"https:\\\/\\\/sites-lira.obspm.fr\\\/the-good-vibrations-seminars\\\/events\\\/good-vibrations-seminar-11-thomas-steindl-university-of-innsbruck-institute-for-astro-and-particle-physics\\\/\",\"name\":\"Good Vibrations Seminar #11: Thomas Steindl (University of Innsbruck, Institute for Astro- and Particle Physics, Austria) - 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