{"id":3418,"date":"2023-11-26T13:34:00","date_gmt":"2023-11-26T13:34:00","guid":{"rendered":"https:\/\/claudiaaguileragomez.com\/?p=3418"},"modified":"2023-11-26T13:34:00","modified_gmt":"2023-11-26T13:34:00","slug":"evidence-of-extra-mixing-in-field-giants-as-traced-by-the-lithium-and-carbon-isotope-ratio","status":"publish","type":"post","link":"https:\/\/claudiaaguileragomez.com\/es\/articles\/evidence-of-extra-mixing-in-field-giants-as-traced-by-the-lithium-and-carbon-isotope-ratio\/","title":{"rendered":"Evidence of extra mixing in field giants as traced by the lithium and carbon isotope ratio"},"content":{"rendered":"

Aguilera-G\u00f3mez, C., Jones, M. I. & Chanam\u00e9, J. <\/p>\n\n\n\n

2023, A&A, 670, 73<\/p>\n\n\n\n

https:\/\/ui.adsabs.harvard.edu\/abs\/2023A%26A…670A..73A\/abstract<\/a><\/p>\n\n\n\n

Although not predicted by standard stellar evolution, the surface abundance of light elements, such as lithium (Li), carbon, and nitrogen, changes during the red giant branch (RGB) as a result of extra mixing. This is usually associated with thermohaline mixing acting after the RGB bump.<\/p>\n\n\n\n

We measure the Li abundance and carbon isotopic ratio 12C\/13C in a sample of 166 field red giants. These abundances act as good diagnostics of mixing inside stellar interiors. The comparison between Li in the RGB and core He-burning giants shows effects of mixing consistent with thermohaline.  Our sample shows behavior consistent with additional mixing acting after the RGB bump. The 12C\/13C adds new clues which can be used to describe extra mixing, and it could well be the best tool to study mixing in giants. Additional measurements of 12C\/13C in field stars would greatly improve our ability to compare data with models and understand mixing mechanisms.<\/p>","protected":false},"excerpt":{"rendered":"

Aguilera-G\u00f3mez, C., Jones, M. I. & Chanam\u00e9, J.\u00a0<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"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":"","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":[16],"tags":[],"class_list":["post-3418","post","type-post","status-publish","format-standard","hentry","category-articles"],"_links":{"self":[{"href":"https:\/\/claudiaaguileragomez.com\/es\/wp-json\/wp\/v2\/posts\/3418","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/claudiaaguileragomez.com\/es\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/claudiaaguileragomez.com\/es\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/claudiaaguileragomez.com\/es\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/claudiaaguileragomez.com\/es\/wp-json\/wp\/v2\/comments?post=3418"}],"version-history":[{"count":1,"href":"https:\/\/claudiaaguileragomez.com\/es\/wp-json\/wp\/v2\/posts\/3418\/revisions"}],"predecessor-version":[{"id":3419,"href":"https:\/\/claudiaaguileragomez.com\/es\/wp-json\/wp\/v2\/posts\/3418\/revisions\/3419"}],"wp:attachment":[{"href":"https:\/\/claudiaaguileragomez.com\/es\/wp-json\/wp\/v2\/media?parent=3418"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/claudiaaguileragomez.com\/es\/wp-json\/wp\/v2\/categories?post=3418"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/claudiaaguileragomez.com\/es\/wp-json\/wp\/v2\/tags?post=3418"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}