{"paper":{"title":"Constraints on the gas masses of low-z damped Lyman-$\\alpha$ systems","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.GA","authors_text":"2), (2) National Centre for Radio Astrophysics, (3) UCO/Lick Observatory, India, J. Xavier Prochaska (3) ((1) St. Stephen's College, Nissim Kanekar (2), Parichay Mazumdar (1, USA)","submitted_at":"2014-06-04T09:39:17Z","abstract_excerpt":"We report a deep search for redshifted HI 21 cm emission from three damped and sub-damped Lyman-$\\alpha$ absorbers (DLAs) at $z \\approx 0.1$ with the Green Bank Telescope (GBT). No evidence for a redshifted HI 21 cm emission signal was obtained in the GBT spectra of two absorbers, with the data on the third rendered unusable by terrestrial interference. The non-detections of HI 21 cm emission yield strong constraints on the HI masses of the associated galaxies, M$_{\\rm HI} < 2.3 \\times 10^9 \\times (\\Delta V/100)^{1/2}$ M$_\\odot$ for the sub-DLA at $z = 0.0830$ towards J1553+3548, and M$_{\\rm H"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1406.0991","kind":"arxiv","version":2},"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"}