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Rottgering (4), I. Feain (1), J. B. Stevens (1), M. Villar-Martin (5), M. Y. Mao (2, R. D. Ekers (1), R. Morganti (8, R. P. Norris (1), T. A. Oosterloo (8","submitted_at":"2011-05-04T06:06:25Z","abstract_excerpt":"We report the detection of molecular CO(1-0) gas in the high-z radio galaxy MRC 0152-209 (z = 1.92) with the Australia Telescope Compact Array Broadband Backend (ATCA/CABB). This is the third known detection of CO(1-0) in a high-z radio galaxy to date. CO(1-0) is the most robust tracer of the overall molecular gas content (including the wide-spread, low-density and subthermally excited component), hence observations of CO(1-0) are crucial for studying galaxy evolution in the Early Universe. We derive L'(CO) = (6.6 +- 2.0) x 10^10 K km/s pc^2 for MRC 0152-209, which is comparable to that derive"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1105.0739","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-05-04T06:06:25Z","cross_cats_sorted":[],"title_canon_sha256":"22882de6d2907a0944e1075e51f43af45a0bb6b67247a201d86c910b46de165b","abstract_canon_sha256":"db28b4b5a28424d2ca80e655e4565a177240e4d62e1ef2ee809e09b55f66b845"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:02:09.146356Z","signature_b64":"AaRwRk68AuQkinYXqTs8OUniqLbz0vKikmwI735lSNFl6C9qFZAhKcGSKqiiF630rLaDfalsL6xjZB40HT9BAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"48ba4ad8c358ebcb32a6528a6306a71080adb43e6549ad8b736316e554d01470","last_reissued_at":"2026-05-18T02:02:09.145739Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:02:09.145739Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Molecular CO(1-0) gas in the z~2 radio galaxy MRC 0152-209","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"1, 1), (10) NCRA Pune, (11) Univ of Sheffield), (2) Univ of Tasmania, 3), (3) AAO, (4) Leiden Obs., (5) IAA/CSIC Granada, (6) Univ of Sydney, (7) Univ of Hertfordshire, (8) ASTRON Dwingeloo, 9), (9) Kapteyn Inst Groningen, B. 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