{"paper":{"title":"Discovery of a Transient U-band Dropout in a Lyman-Break Survey: A Tidally-Disrupted Star at z = 3.3?","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"(10) UCLA), (2) Yale University, (3) LBNL, (4) Caltech, (5) University of Durham, (6) Harvard/CfA, (7) NRAO, 8), (8) OMP, (9) Kapteyn Astron. Inst., D.A. Frail (7), Daniel Stern (1), D.J. Sand (4), J.-P. Kneib (4, J.S. Bloom (6), L.V.E. Koopmans (9), Mark Sullivan (5), Peter Nugent (3), P.G. van Dokkum (2), R.S. Ellis (4), Tommaso Treu (10) ((1) JPL/Caltech","submitted_at":"2004-05-24T23:33:20Z","abstract_excerpt":"We report the discovery of a transient source in the central regions of galaxy cluster Abell 267. The object, which we call \"PALS1\", was found in a survey aimed at identifying highly-magnified Lyman-break galaxies in the fields of intervening rich clusters. At discovery, the source had U>24.7 (2-sigma; AB), g=21.96, and very blue g-r and r-i colors; i.e., PALS1 was a U-band drop-out, characteristic of star-forming galaxies and quasars at z~3. However, three months later the source had faded by more than three magnitudes. Further observations showed a continued decline in luminosity, to R>26.4 "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0405482","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/astro-ph/0405482/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"}