{"paper":{"title":"Optical and near-infrared spectroscopy of quasars at $z>6.5$: public data release and composite spectrum","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.GA","authors_text":"Aaron J. Barth, Anna-Christina Eilers, Bram P. Venemans, Chiara Mazzucchelli, Eduardo Ba\\~nados, Emanuele Paolo Farina, Fabian Walter, Fabio Vito, Feige Wang, Frederick B. Davies, Irham T. Andika, Jan-Torge Schindler, Jinyi Yang, Joseph F. Hennawi, Masafusa Onoue, Riccardo Nanni, Roberto Decarli, Sarah E. I. Bosman, Silvia Belladitta, Silvia Onorato, Xiaohui Fan","submitted_at":"2024-06-11T18:00:01Z","abstract_excerpt":"We present optical and near-infrared (NIR) spectroscopic observations for a sample of $45$ quasars at $6.50 < z \\leq 7.64$ with absolute magnitudes at $1450$ \\r{A} in the range $-28.82 \\leq M_{1450} \\leq -24.13$ and their composite spectrum. The median redshift and $M_{1450}$ of the quasars in the sample are $z_{\\rm{median}}=6.71$ and $M_{1450,\\rm{median}} \\simeq -26.1$, respectively. The NIR spectra are taken with echelle spectrographs, complemented with additional data from optical long slit instruments, and then reduced consistently using the open-source Python-based spectroscopic data redu"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2406.07612","kind":"arxiv","version":3},"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/2406.07612/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"}