{"paper":{"title":"A Semi-Empirical Estimate of Solar EUV Evolution from 10 Myr to 10 Gyr","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.EP"],"primary_cat":"astro-ph.SR","authors_text":"Alexander Brown (University of Colorado), Allison Youngblood (NASA/GSFC), Cynthia Froning (SwRI), David Wilson (University of Colorado), Girish Duvvuri (Vanderbilt), J. Sebastian Pineda (University of Colorado), Kevin France (University of Colorado), Kosuke Namekata (NASA/GSFC, Kyoto University), P. Christian Schneider (Christian-Albrects University), Tristen Sextro (Penn State University), Vladimir Airapetian (NASA/GSFC), Yuta Notsu (University of Colorado)","submitted_at":"2025-07-21T18:00:10Z","abstract_excerpt":"The extreme-ultraviolet (EUV; 100 -- 911 \\AA) spectra of F, G, K, and M stars provide diagnostics of the stellar chromosphere through the corona, with line and continuum formation temperatures spanning roughly 10$^{4}$ - 10$^{7}$ K. The EUV stellar spectrum in turn drives atmospheric photochemistry and numerous escape processes on orbiting planets. We present a new study of the EUV history of solar-type stars, using new and archival {\\it Hubble Space Telescope} observations of solar analogs (T$_{\\odot}$ $\\pm$ 150 K for stars older than 100 Myr) and ``Young Suns\" (age $<$ 100 Myr) that will evo"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2507.15953","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2507.15953/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}