{"paper":{"title":"A Giant Intragroup Nebula Hosting a Damped Lya Absorber at z=0.313","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"(2) Princeton U., 3), (3) Carnegie Obs., (4) U. Hawaii-Hilo), Erin Boettcher (1), Fakhri S. Zahedy (1), Gwen C. Rudie (3), Hsiao-Wen Chen (1), John S. Mulchaey (3) ((1) U. Chicago, Kathy L. Cooksey (4), Michael Rauch (3), Sean D. Johnson (2","submitted_at":"2019-05-31T18:00:01Z","abstract_excerpt":"This paper reports the discovery of spatially-extended line-emitting nebula, reaching to ~100 physical kpc (pkpc) from a damped Ly{\\alpha} absorber (DLA) at z_DLA=0.313 along the sightline toward QSO PKS1127-145 (z_QSO=1.188). This DLA was known to be associated with a galaxy group of dynamical mass M_group ~3e12 M_sun, but its physical origin remained ambiguous. New wide-field integral field observations revealed a giant nebula detected in [OII], H{\\beta}, [OIII], H{\\alpha}, and [NII] emission, with the line-emitting gas following closely the motions of group galaxies. One of the denser strea"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1906.00005","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"}