{"paper":{"title":"Ultraviolet Imaging of SR 12 c with HST/WFC3: Accretion and Variability of a Giant Planet at the End Stages of Growth","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"Adam L. Kraus, Brendan P. Bowler, Catherine C. Espaillat, Claire O. Finley, Connor E. Robinson, Gregory J. Herczeg, Ian Czekala, Katherine B. Follette, Kimberly Ward-Duong, Quang H. Tran, Raquel A. Martinez, William Best, Ya-Lin Wu, Yifan Zhou, Yuhiko Aoyama","submitted_at":"2026-06-11T03:46:28Z","abstract_excerpt":"Many details of the gas accretion phase during giant planet formation remain untested. We present new 0.2$\\unicode{x2013}$0.7 $\\mu$m UV-through-red optical imaging of the young, wide-orbit planetary-mass companion SR 12 c from the Wide Field Camera 3 (WFC3) instrument on board the Hubble Space Telescope. SR 12 c exhibits strong accretion-related continuum excess blueward of $\\sim$5000 $\\unicode{x212B}$ and clear signs of the Balmer jump at 3646 $\\unicode{x212B}$. We derive a total accretion luminosity of 1.65 $\\pm$ $0.19 \\times 10^{-5} L_{\\odot}$ and a mass accretion rate of 8 $\\pm$ $2\\times 1"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.12862","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/2606.12862/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"}