Lea Schimak (University of Sydney, Australia)<\/a><\/p>\n\n\n\nAsteroseismology has long been proven to be a powerful tool for probing the interior of stars and testing stellar models. For red clump (RC) stars, which experienced a He-flash in their past, these tests show limited success compared to main-sequence or red giant branch (RGB) stars of a similar mass range. The models are confronted with various discrepancies and numerical issues. For example, RC stars in clusters often provide inconsistent ages compared to their RGB counterparts; the observed period spacing suggests enhanced core overshooting; and at the convective core boundary, the models often predict a split convection zone due to the sharp changes in the composition gradient.<\/p>\n\n\n\n
In this talk, I will present how standard models fail, what has been done to improve them and discuss different asteroseismic constraints to further investigate the discrepancies. I will explore standard models using the asteroseismic binary system KIC 1081730, consisting of an RC and RGB star and measure the frequency-dependent coupling strength of mixed modes as a surface-independent parameter to probe the inside of red giants and discuss how this parameter is an excellent probe, especially for the structure of RC stars.<\/p>\n","protected":false},"excerpt":{"rendered":"
Why is it so hard to model red clump stars? Lea Schimak (University of Sydney, Australia) Asteroseismology has long been<\/p>\n
Read more »<\/a><\/p>\n","protected":false},"author":104,"featured_media":899,"comment_status":"open","ping_status":"closed","template":"","categories":[],"class_list":["post-896","eap_event","type-eap_event","status-publish","has-post-thumbnail","hentry"],"_links":{"self":[{"href":"https:\/\/sites.lesia.obspm.fr\/the-good-vibrations-seminars\/wp-json\/wp\/v2\/eap_event\/896","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sites.lesia.obspm.fr\/the-good-vibrations-seminars\/wp-json\/wp\/v2\/eap_event"}],"about":[{"href":"https:\/\/sites.lesia.obspm.fr\/the-good-vibrations-seminars\/wp-json\/wp\/v2\/types\/eap_event"}],"author":[{"embeddable":true,"href":"https:\/\/sites.lesia.obspm.fr\/the-good-vibrations-seminars\/wp-json\/wp\/v2\/users\/104"}],"replies":[{"embeddable":true,"href":"https:\/\/sites.lesia.obspm.fr\/the-good-vibrations-seminars\/wp-json\/wp\/v2\/comments?post=896"}],"version-history":[{"count":1,"href":"https:\/\/sites.lesia.obspm.fr\/the-good-vibrations-seminars\/wp-json\/wp\/v2\/eap_event\/896\/revisions"}],"predecessor-version":[{"id":900,"href":"https:\/\/sites.lesia.obspm.fr\/the-good-vibrations-seminars\/wp-json\/wp\/v2\/eap_event\/896\/revisions\/900"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/sites.lesia.obspm.fr\/the-good-vibrations-seminars\/wp-json\/wp\/v2\/media\/899"}],"wp:attachment":[{"href":"https:\/\/sites.lesia.obspm.fr\/the-good-vibrations-seminars\/wp-json\/wp\/v2\/media?parent=896"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sites.lesia.obspm.fr\/the-good-vibrations-seminars\/wp-json\/wp\/v2\/categories?post=896"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}