{"about":{"site":"https://codewithpapers.app","non_affiliation":"Code with Papers and Syntology are not affiliated with, endorsed by, or sponsored by Papers with Code, Meta, or the pwc-archive mirror.","licence":"CC BY-SA 4.0","licence_url":"https://creativecommons.org/licenses/by-sa/4.0/legalcode","attribution":"https://codewithpapers.app/attribution","modified":"archive material modified by Syntology; see the attribution page"},"url":"/paper/mixed-mode-ensemble-asteroseismology-of-low","title":"Mixed-mode Ensemble Asteroseismology of Low-Luminosity Kepler Red Giants","arxiv_id":"2307.06482","date":"2023-07-12","proceeding":null,"authors":["James S. Kuszlewicz","Marc Hon","Daniel Huber"],"abstract":"We present measurements of the dipole mode asymptotic period spacing ($\\Delta\\Pi_1$), the coupling factor between p- and g- modes ($q$), the g-mode phase offset ($\\epsilon_g$), and the mixed-mode frequency rotational splitting ($\\delta\\nu_{\\mathrm{rot}}$) for 1,074 low-luminosity red giants from the Kepler mission. Using oscillation mode frequencies extracted from each star, we apply Bayesian optimization to estimate $\\Delta\\Pi_1$ from the power spectrum of the stretched period spectrum and to perform the subsequent forward modelling of the mixed-mode frequencies. With our measurements, we show that the mode coupling factor $q$ shows significant anti-correlation with both stellar mass and metallicity, and can reveal highly metal-poor stars. We present the evolution of $\\epsilon_g$ up the lower giant branch up to before the luminosity bump, and find no significant trends in $\\epsilon_g$ or $\\delta\\nu_{\\mathrm{rot}}$ with stellar mass and metallicity in our sample. Additionally, we identify six new red giants showing anomalous distortions in their g-mode pattern. Our data products, code, and results are provided in a public repository.","url_abs":"https://arxiv.org/abs/2307.06482v1","url_pdf":"https://arxiv.org/pdf/2307.06482v1.pdf","source":{"archive":"pwc-archive (Hugging Face), CC BY-SA 4.0","snapshot":"2025-07-28","licence_url":"https://creativecommons.org/licenses/by-sa/4.0/legalcode","row_kind":"links_only","authors_date_abstract":"arXiv metadata, CC0 1.0 (https://info.arxiv.org/help/license), from the Kaggle arXiv metadata snapshot of 2026-09-12"},"code_links":[{"paper_slug":"mixed-mode-ensemble-asteroseismology-of-low","repo_url":"https://github.com/jsk389/bochamm","is_official":1,"mentioned_in_paper":1,"mentioned_in_github":0,"framework":"none","reach":null}],"tasks":[],"methods":[],"datasets_introduced":[],"methods_introduced":[],"results":[],"syntology":{"syntology_url":null,"atlas_url":null,"mcp":null,"developers":"https://syntology.ai/developers"},"arxiv_metadata":null,"syntology_extracted_results":null}