{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:OS6FWGHNNDU2URWGG7KTETABGT","short_pith_number":"pith:OS6FWGHN","canonical_record":{"source":{"id":"1106.2098","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-06-10T15:30:46Z","cross_cats_sorted":[],"title_canon_sha256":"c9884f1863d7e27e46967153b3507247c68fd6402b73cba4e679254ae81e3e4b","abstract_canon_sha256":"e250d55e38b5bff15eacfeafb8cc7bcb9e5179cdf2386e5598374297b8390dc2"},"schema_version":"1.0"},"canonical_sha256":"74bc5b18ed68e9aa46c637d5324c0134cdd619f5e3cdd2f248a0555a3a1ea5cf","source":{"kind":"arxiv","id":"1106.2098","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1106.2098","created_at":"2026-05-18T02:01:39Z"},{"alias_kind":"arxiv_version","alias_value":"1106.2098v2","created_at":"2026-05-18T02:01:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1106.2098","created_at":"2026-05-18T02:01:39Z"},{"alias_kind":"pith_short_12","alias_value":"OS6FWGHNNDU2","created_at":"2026-05-18T12:26:37Z"},{"alias_kind":"pith_short_16","alias_value":"OS6FWGHNNDU2URWG","created_at":"2026-05-18T12:26:37Z"},{"alias_kind":"pith_short_8","alias_value":"OS6FWGHN","created_at":"2026-05-18T12:26:37Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:OS6FWGHNNDU2URWGG7KTETABGT","target":"record","payload":{"canonical_record":{"source":{"id":"1106.2098","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-06-10T15:30:46Z","cross_cats_sorted":[],"title_canon_sha256":"c9884f1863d7e27e46967153b3507247c68fd6402b73cba4e679254ae81e3e4b","abstract_canon_sha256":"e250d55e38b5bff15eacfeafb8cc7bcb9e5179cdf2386e5598374297b8390dc2"},"schema_version":"1.0"},"canonical_sha256":"74bc5b18ed68e9aa46c637d5324c0134cdd619f5e3cdd2f248a0555a3a1ea5cf","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:01:39.977801Z","signature_b64":"3vPTtodd9Of4erBjYVl16rquW+8C8i9xPZMYcGvxfe2mPVsCc1CXCXZRN24W6ZIhjBTuYhjgcxCwU/ZkG2oKAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"74bc5b18ed68e9aa46c637d5324c0134cdd619f5e3cdd2f248a0555a3a1ea5cf","last_reissued_at":"2026-05-18T02:01:39.977265Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:01:39.977265Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1106.2098","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:01:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/+ChCTebYMimZo9Surzd/hizmllltoHCuDd9EiQ1f+wiHQ1ntMEcohVjglYvxnhGkYCiskDykJiwX/c+i3l0Cg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T13:00:07.851127Z"},"content_sha256":"13c5bbbccbe232a71578466c23cc414bcfceaa947288aa6d48d4129eb5c1a25a","schema_version":"1.0","event_id":"sha256:13c5bbbccbe232a71578466c23cc414bcfceaa947288aa6d48d4129eb5c1a25a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:OS6FWGHNNDU2URWGG7KTETABGT","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The metallicity dependence of the CO {\\rightarrow} H_2 conversion factor in z>1 star forming galaxies","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"A. Bolatto, A. Burkert, A. Saintonge, A. Shapley, A. Sternberg, B. Weiner, D. Lutz, F. Bournaud, F. Combes, J. Comerford, J. Gracia-Carpio, K. Shapiro, L. J. Tacconi, M. C. Cooper, M. Davis, N. Bouche, N. M. Foerster Schreiber, P. Cox, R. Genzel, R. Neri, S. Garcia-Burillo, S. Newman, T. Naab","submitted_at":"2011-06-10T15:30:46Z","abstract_excerpt":"We use the first systematic samples of CO millimeter emission in z>1 'main-sequence' star forming galaxies (SFGs) to study the metallicity dependence of the conversion factor {\\alpha}CO, from CO line luminosity to molecular gas mass. The molecular gas depletion rate inferred from the ratio of the star formation rate (SFR) to CO luminosity, is ~1 Gyr-1 for near-solar metallicity galaxies with stellar masses above M_S~1e11 M_sun. In this regime the depletion rate does not vary more than a factor of two to three as a function of molecular gas surface density, or redshift between z~0 and 2. Below "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1106.2098","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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:01:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Cc4st5p+mJxyxJ1jTlZNPxRKnOBYahH7hccorNdjbZA3zZ5bmZ9t3qZqjbM9hHbVv6qviCnhJVJQGiQ3ZCAVCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T13:00:07.851808Z"},"content_sha256":"3f86d9d9eede67a10cecc73951f9fd0ddfb1d77f12023fdd6e94f81297f2395c","schema_version":"1.0","event_id":"sha256:3f86d9d9eede67a10cecc73951f9fd0ddfb1d77f12023fdd6e94f81297f2395c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/OS6FWGHNNDU2URWGG7KTETABGT/bundle.json","state_url":"https://pith.science/pith/OS6FWGHNNDU2URWGG7KTETABGT/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/OS6FWGHNNDU2URWGG7KTETABGT/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":"2026-05-27T13:00:07Z","links":{"resolver":"https://pith.science/pith/OS6FWGHNNDU2URWGG7KTETABGT","bundle":"https://pith.science/pith/OS6FWGHNNDU2URWGG7KTETABGT/bundle.json","state":"https://pith.science/pith/OS6FWGHNNDU2URWGG7KTETABGT/state.json","well_known_bundle":"https://pith.science/.well-known/pith/OS6FWGHNNDU2URWGG7KTETABGT/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:OS6FWGHNNDU2URWGG7KTETABGT","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":"e250d55e38b5bff15eacfeafb8cc7bcb9e5179cdf2386e5598374297b8390dc2","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-06-10T15:30:46Z","title_canon_sha256":"c9884f1863d7e27e46967153b3507247c68fd6402b73cba4e679254ae81e3e4b"},"schema_version":"1.0","source":{"id":"1106.2098","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1106.2098","created_at":"2026-05-18T02:01:39Z"},{"alias_kind":"arxiv_version","alias_value":"1106.2098v2","created_at":"2026-05-18T02:01:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1106.2098","created_at":"2026-05-18T02:01:39Z"},{"alias_kind":"pith_short_12","alias_value":"OS6FWGHNNDU2","created_at":"2026-05-18T12:26:37Z"},{"alias_kind":"pith_short_16","alias_value":"OS6FWGHNNDU2URWG","created_at":"2026-05-18T12:26:37Z"},{"alias_kind":"pith_short_8","alias_value":"OS6FWGHN","created_at":"2026-05-18T12:26:37Z"}],"graph_snapshots":[{"event_id":"sha256:3f86d9d9eede67a10cecc73951f9fd0ddfb1d77f12023fdd6e94f81297f2395c","target":"graph","created_at":"2026-05-18T02:01:39Z","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 use the first systematic samples of CO millimeter emission in z>1 'main-sequence' star forming galaxies (SFGs) to study the metallicity dependence of the conversion factor {\\alpha}CO, from CO line luminosity to molecular gas mass. The molecular gas depletion rate inferred from the ratio of the star formation rate (SFR) to CO luminosity, is ~1 Gyr-1 for near-solar metallicity galaxies with stellar masses above M_S~1e11 M_sun. In this regime the depletion rate does not vary more than a factor of two to three as a function of molecular gas surface density, or redshift between z~0 and 2. Below ","authors_text":"A. Bolatto, A. Burkert, A. Saintonge, A. Shapley, A. Sternberg, B. Weiner, D. Lutz, F. Bournaud, F. Combes, J. Comerford, J. Gracia-Carpio, K. Shapiro, L. J. Tacconi, M. C. Cooper, M. Davis, N. Bouche, N. M. Foerster Schreiber, P. Cox, R. Genzel, R. Neri, S. Garcia-Burillo, S. Newman, T. Naab","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-06-10T15:30:46Z","title":"The metallicity dependence of the CO {\\rightarrow} H_2 conversion factor in z>1 star forming galaxies"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1106.2098","kind":"arxiv","version":2},"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":"sha256:13c5bbbccbe232a71578466c23cc414bcfceaa947288aa6d48d4129eb5c1a25a","target":"record","created_at":"2026-05-18T02:01:39Z","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":"e250d55e38b5bff15eacfeafb8cc7bcb9e5179cdf2386e5598374297b8390dc2","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-06-10T15:30:46Z","title_canon_sha256":"c9884f1863d7e27e46967153b3507247c68fd6402b73cba4e679254ae81e3e4b"},"schema_version":"1.0","source":{"id":"1106.2098","kind":"arxiv","version":2}},"canonical_sha256":"74bc5b18ed68e9aa46c637d5324c0134cdd619f5e3cdd2f248a0555a3a1ea5cf","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"74bc5b18ed68e9aa46c637d5324c0134cdd619f5e3cdd2f248a0555a3a1ea5cf","first_computed_at":"2026-05-18T02:01:39.977265Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:01:39.977265Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"3vPTtodd9Of4erBjYVl16rquW+8C8i9xPZMYcGvxfe2mPVsCc1CXCXZRN24W6ZIhjBTuYhjgcxCwU/ZkG2oKAA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:01:39.977801Z","signed_message":"canonical_sha256_bytes"},"source_id":"1106.2098","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:13c5bbbccbe232a71578466c23cc414bcfceaa947288aa6d48d4129eb5c1a25a","sha256:3f86d9d9eede67a10cecc73951f9fd0ddfb1d77f12023fdd6e94f81297f2395c"],"state_sha256":"cb907cbdeee3623d5d6f38e2dd4d778e3e0cccd7b32bd3270ffe18018033dcf5"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"sXA4kBSBIWkOXiVOnE6rHQKQlnG9hMRojDneJ2G8qvaODk2Tz0Nw9Ki4jOAli6Y2kzBInUICoZ7vl58JIdozDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T13:00:07.855186Z","bundle_sha256":"21ab4d5d03e46b5d03bb713548220fa817d558129eae086eb3afa32eed9002b5"}}