{"paper":{"title":"SN 2025aico: Early observations of a faint Type IIb supernova with a low-mass envelope","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.HE"],"primary_cat":"astro-ph.SR","authors_text":"A. Dutta, A. L. Bouquin, A. Pastorello, A. Reguitti, B. Kumar, C. Ashall, C. Pfeffer, D. K. Sahu, E. Hsiao, E. Kankare, E. P. Lagioia, G. C. Anupama, G. Rameshan, G. Valerin, G.-W. Du, H. Das, H.-F. Xiao, J.-H. Zhang, J. Martikainen, J.-W. Zhao, K. Chatterjee, K. Matilainen, K. Medler, K. Valeckas, M. D. Stritzinger, M. Fraser, N. Elias-Rosa, N. Morrell, N. Pyykkinen, P. Lundqvist, R. S. Teja, S. Bijavara Seshashayana, S. Campana, T. J. Moriya, T. M. Reynolds, V. Vuolteenaho, W. Hoogendam, W.-Y. Li, X.-K. Liu, X.-L. Chen, X.-L. Du, X.-W. Liu, X.-Z. Zou, Y. Fang, Y. Pan, Y.-P. Yang, Y.-Z. Cai, Z.-Y. Wang","submitted_at":"2026-07-12T09:31:35Z","abstract_excerpt":"We aimed to investigate the physical properties and the underlying explosion mechanisms of the Type IIb SN 2025aico. Through a comprehensive analysis of early-phase optical light curves and spectroscopic data, we aim to constrain the fundamental explosion parameters and evaluate the physical state of the event. We present early multi-band optical imaging and low-resolution optical spectroscopic follow-up observations of the Type IIb SN 2025aico, spanning approximately 70 days from the explosion. We constrain the properties of SN 2025aico by utilizing a hybrid model that combines shock-cooling "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.10671","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/2607.10671/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"}