{"paper":{"title":"A quasar-galaxy merger at $z\\sim6.2$: black hole mass and quasar properties from the NIRSpec spectrum","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.GA","authors_text":"Alessandro Lupi, Andrea Comastri, Anna-Christina Eilers, Antonio Pensabene, Benny Trakhtenbrot, Bram Venemans, Chiara Mazzucchelli, Chris L. Carilli, Dominik A. Riechers, Eduardo Ba\\~nados, Emanuele Paolo Farina, Fabian Walter, Federica Loiacono, Feige Wang, Hyunsung D. Jun, Jan-Torge Schindler, Jinyi Yang, Laura Blecha, Madeline A. Marshall, Marcel Neeleman, Marco Mignoli, Marianne Vestergaard, Massimo Dotti, Maxime Trebitsch, Michael A. Strauss, Roberto Decarli, Roberto Gilli, Roderik Overzier, Romain A. Meyer, Sarah Bosman, Thomas Connor, Tiago Costa, Weizhe Liu, Xiaohui Fan","submitted_at":"2024-02-20T19:00:11Z","abstract_excerpt":"We present JWST/NIRSpec integral field data of the quasar PJ308-21 at $z=6.2342$. As shown by previous ALMA and HST imaging, the quasar has two companion sources, interacting with the quasar host galaxy. The high-resolution G395H/290LP NIRSpec spectrum covers the $2.87-5.27\\ \\rm \\mu m$ wavelength range and shows the rest-frame optical emission of the quasar with exquisite quality ($S/N\\sim 100-400$ per spectral element). Based on the H$\\beta$ line from the broad line region, we obtain an estimate of the black hole mass $M_{\\rm BH,H\\beta}\\sim 2.7\\times 10^{9}\\ \\rm M_{\\odot}$. This value is with"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2402.13319","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/2402.13319/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"}