{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2009:6DHONGQ3K4THHBDUNGTL2SRQ3W","short_pith_number":"pith:6DHONGQ3","canonical_record":{"source":{"id":"0906.1585","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-06-08T20:04:07Z","cross_cats_sorted":[],"title_canon_sha256":"9240c39883be008fe7d9bf93d24e3250524dab21263fc033c7d25e6044c1407c","abstract_canon_sha256":"6f767d7e7f2a48be2b4a52e4bbc782c991dc29c70a3a57950c64f047c0317f8e"},"schema_version":"1.0"},"canonical_sha256":"f0cee69a1b572673847469a6bd4a30ddb31e68c1e36c2c42122603c1f180f236","source":{"kind":"arxiv","id":"0906.1585","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0906.1585","created_at":"2026-05-18T02:13:21Z"},{"alias_kind":"arxiv_version","alias_value":"0906.1585v1","created_at":"2026-05-18T02:13:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0906.1585","created_at":"2026-05-18T02:13:21Z"},{"alias_kind":"pith_short_12","alias_value":"6DHONGQ3K4TH","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_16","alias_value":"6DHONGQ3K4THHBDU","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_8","alias_value":"6DHONGQ3","created_at":"2026-05-18T12:25:58Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2009:6DHONGQ3K4THHBDUNGTL2SRQ3W","target":"record","payload":{"canonical_record":{"source":{"id":"0906.1585","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-06-08T20:04:07Z","cross_cats_sorted":[],"title_canon_sha256":"9240c39883be008fe7d9bf93d24e3250524dab21263fc033c7d25e6044c1407c","abstract_canon_sha256":"6f767d7e7f2a48be2b4a52e4bbc782c991dc29c70a3a57950c64f047c0317f8e"},"schema_version":"1.0"},"canonical_sha256":"f0cee69a1b572673847469a6bd4a30ddb31e68c1e36c2c42122603c1f180f236","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:13:21.454118Z","signature_b64":"MKRklQiChvJbkSD8BfesBNwdwvk9T5Imhz4xvnb1RrncJm+/3hPDbJG3uNXU7lsNxR3bXdN74K6gKamq8uzIDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f0cee69a1b572673847469a6bd4a30ddb31e68c1e36c2c42122603c1f180f236","last_reissued_at":"2026-05-18T02:13:21.453656Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:13:21.453656Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0906.1585","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:13:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VhttPwocljdiKWrt2ZKXeFfpbijwjUpBw01HRNWsFf4mz4cH5tbn21FHZfB34943eTsrKreoTjnBuFDNpDlsAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T16:56:17.947009Z"},"content_sha256":"5a4e79f20efde4699ba44a3dbd5d38cff58d95780ef814e62e7e47fcb04d79a1","schema_version":"1.0","event_id":"sha256:5a4e79f20efde4699ba44a3dbd5d38cff58d95780ef814e62e7e47fcb04d79a1"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2009:6DHONGQ3K4THHBDUNGTL2SRQ3W","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Diffuse molecular gas at high redshift: Detection of CO molecules and the 2175 {\\AA} dust feature at z=1.64","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"C. Ledoux, P. Noterdaeme, P. Petitjean, R. Srianand, S. Lopez","submitted_at":"2009-06-08T20:04:07Z","abstract_excerpt":"We present the detection of carbon monoxide molecules (CO) at z=1.6408 towards the quasar SDSSJ160457.50+220300.5 using the VLT Ultraviolet and Visual Echelle Spectrograph. CO absorption is detected in at least two components in the first six A-X bands and one d-X(5-0) inter-band system. This is the second detection of this kind along a quasar line of sight. The CO absorption profiles are well modelled assuming a rotational excitation of CO in the range 6<Tex<16 K, which is consistent with or higher than the temperature of the CMB radiation at this redshift. We derive a total CO column density"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0906.1585","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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:13:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"D4tIIRGyRa6iE7rGMoaw8GBi9HSx0BByUEaGpJ47rUG6Mv7mYbuG6VaXm+VgSz/72PrpXUvKKFSyV7EX9PEwCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T16:56:17.947678Z"},"content_sha256":"1c065c0bc4f00d252cdf00648e0dfd2854bbb46b1da488f0da0563beb3db7783","schema_version":"1.0","event_id":"sha256:1c065c0bc4f00d252cdf00648e0dfd2854bbb46b1da488f0da0563beb3db7783"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/6DHONGQ3K4THHBDUNGTL2SRQ3W/bundle.json","state_url":"https://pith.science/pith/6DHONGQ3K4THHBDUNGTL2SRQ3W/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/6DHONGQ3K4THHBDUNGTL2SRQ3W/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-05-25T16:56:17Z","links":{"resolver":"https://pith.science/pith/6DHONGQ3K4THHBDUNGTL2SRQ3W","bundle":"https://pith.science/pith/6DHONGQ3K4THHBDUNGTL2SRQ3W/bundle.json","state":"https://pith.science/pith/6DHONGQ3K4THHBDUNGTL2SRQ3W/state.json","well_known_bundle":"https://pith.science/.well-known/pith/6DHONGQ3K4THHBDUNGTL2SRQ3W/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:6DHONGQ3K4THHBDUNGTL2SRQ3W","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"6f767d7e7f2a48be2b4a52e4bbc782c991dc29c70a3a57950c64f047c0317f8e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-06-08T20:04:07Z","title_canon_sha256":"9240c39883be008fe7d9bf93d24e3250524dab21263fc033c7d25e6044c1407c"},"schema_version":"1.0","source":{"id":"0906.1585","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0906.1585","created_at":"2026-05-18T02:13:21Z"},{"alias_kind":"arxiv_version","alias_value":"0906.1585v1","created_at":"2026-05-18T02:13:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0906.1585","created_at":"2026-05-18T02:13:21Z"},{"alias_kind":"pith_short_12","alias_value":"6DHONGQ3K4TH","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_16","alias_value":"6DHONGQ3K4THHBDU","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_8","alias_value":"6DHONGQ3","created_at":"2026-05-18T12:25:58Z"}],"graph_snapshots":[{"event_id":"sha256:1c065c0bc4f00d252cdf00648e0dfd2854bbb46b1da488f0da0563beb3db7783","target":"graph","created_at":"2026-05-18T02:13:21Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"We present the detection of carbon monoxide molecules (CO) at z=1.6408 towards the quasar SDSSJ160457.50+220300.5 using the VLT Ultraviolet and Visual Echelle Spectrograph. CO absorption is detected in at least two components in the first six A-X bands and one d-X(5-0) inter-band system. This is the second detection of this kind along a quasar line of sight. The CO absorption profiles are well modelled assuming a rotational excitation of CO in the range 6<Tex<16 K, which is consistent with or higher than the temperature of the CMB radiation at this redshift. We derive a total CO column density","authors_text":"C. Ledoux, P. Noterdaeme, P. Petitjean, R. Srianand, S. Lopez","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-06-08T20:04:07Z","title":"Diffuse molecular gas at high redshift: Detection of CO molecules and the 2175 {\\AA} dust feature at z=1.64"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0906.1585","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:5a4e79f20efde4699ba44a3dbd5d38cff58d95780ef814e62e7e47fcb04d79a1","target":"record","created_at":"2026-05-18T02:13:21Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"6f767d7e7f2a48be2b4a52e4bbc782c991dc29c70a3a57950c64f047c0317f8e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-06-08T20:04:07Z","title_canon_sha256":"9240c39883be008fe7d9bf93d24e3250524dab21263fc033c7d25e6044c1407c"},"schema_version":"1.0","source":{"id":"0906.1585","kind":"arxiv","version":1}},"canonical_sha256":"f0cee69a1b572673847469a6bd4a30ddb31e68c1e36c2c42122603c1f180f236","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f0cee69a1b572673847469a6bd4a30ddb31e68c1e36c2c42122603c1f180f236","first_computed_at":"2026-05-18T02:13:21.453656Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:13:21.453656Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"MKRklQiChvJbkSD8BfesBNwdwvk9T5Imhz4xvnb1RrncJm+/3hPDbJG3uNXU7lsNxR3bXdN74K6gKamq8uzIDw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:13:21.454118Z","signed_message":"canonical_sha256_bytes"},"source_id":"0906.1585","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5a4e79f20efde4699ba44a3dbd5d38cff58d95780ef814e62e7e47fcb04d79a1","sha256:1c065c0bc4f00d252cdf00648e0dfd2854bbb46b1da488f0da0563beb3db7783"],"state_sha256":"771edac9bea50f2e60462eb8485552f330464b918fc2148b666daaf29f54dd4c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fsvRlLy3f0q6L7QUuAK4ieqroI2zEM9Q66vsgRS897UmUUi21sHh2lLr+Bxp2wmlw17zLijL3UKOaTZ+MurSCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T16:56:17.950328Z","bundle_sha256":"5b1006ab47771107fb8d4175a305bc99b3340ec03a4d1f326b8ba89c9d76e277"}}