{"paper":{"title":"SHARDS Frontier Fields: Physical properties of a low mass Lyman-alpha emitter at z=5.75","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Almudena Alonso-Herrero, Antonio Cava, Antonio Hern\\'an-Caballero, Bel\\'en Alcalde-Pampliega, Carmen Eliche-Moral, Christopher J. Conselice, Daniel Rosa Gonz\\'alez, Daniel Schaerer, David Lagattuta, Helena Dom\\'inguez-S\\'anchez, Helmut Dannerbauer, Ismael P\\'erez-Fournon, Johan Richard, Jos\\'e M. Diego, Jos\\'e Miguel Rodr\\'iguez Espinosa, Marc Huertas-Company, Pablo G. P\\'erez-Gonz\\'alez, Panos Sklias, Pilar Esquej, Raffaella Anna Marino, Rui Marques-Chaves, Tim Rawle, Wiphu Rujopakarn","submitted_at":"2017-10-02T18:00:02Z","abstract_excerpt":"We analyze the properties of a multiply-imaged Lyman-alpha (Lya) emitter at z=5.75 identified through SHARDS Frontier Fields intermediate-band imaging of the Hubble Frontier Fields (HFF) cluster Abell 370. The source, A370-L57, has low intrinsic luminosity (M_UV~-16.5), steep UV spectral index (\\beta=-2.4+/-0.1), and extreme rest-frame equivalent width of Lya (EW(Lya)=420+180-120 \\AA). Two different gravitational lens models predict high magnification (\\mu~10--16) for the two detected counter-images, separated by 7\", while a predicted third counter-image (\\mu~3--4) is undetected. We find diffe"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1710.00826","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":""},"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"}