{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:YRVSUJPKAAM4OSHJ7NN54CXQEH","short_pith_number":"pith:YRVSUJPK","canonical_record":{"source":{"id":"1203.5280","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2012-03-23T16:15:04Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"16e2873ff5033a26ca169980818e6d62680305c142794374bb51c53bf7955cab","abstract_canon_sha256":"2058431967eff310719c3edf7c4361709416891ea980b2714304d20e3a483d39"},"schema_version":"1.0"},"canonical_sha256":"c46b2a25ea0019c748e9fb5bde0af021d323b7aca49399751af237944d53727c","source":{"kind":"arxiv","id":"1203.5280","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1203.5280","created_at":"2026-05-18T01:58:03Z"},{"alias_kind":"arxiv_version","alias_value":"1203.5280v2","created_at":"2026-05-18T01:58:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1203.5280","created_at":"2026-05-18T01:58:03Z"},{"alias_kind":"pith_short_12","alias_value":"YRVSUJPKAAM4","created_at":"2026-05-18T12:27:30Z"},{"alias_kind":"pith_short_16","alias_value":"YRVSUJPKAAM4OSHJ","created_at":"2026-05-18T12:27:30Z"},{"alias_kind":"pith_short_8","alias_value":"YRVSUJPK","created_at":"2026-05-18T12:27:30Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:YRVSUJPKAAM4OSHJ7NN54CXQEH","target":"record","payload":{"canonical_record":{"source":{"id":"1203.5280","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2012-03-23T16:15:04Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"16e2873ff5033a26ca169980818e6d62680305c142794374bb51c53bf7955cab","abstract_canon_sha256":"2058431967eff310719c3edf7c4361709416891ea980b2714304d20e3a483d39"},"schema_version":"1.0"},"canonical_sha256":"c46b2a25ea0019c748e9fb5bde0af021d323b7aca49399751af237944d53727c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:58:03.924400Z","signature_b64":"laTuMfJO+FjU2ls+g0vv4iMOiaAKYoZ+MLMGll1bgcvvGAHOGItorrkcjIzZJkElofWJ3Y7tZoF8UQcEqaKGAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c46b2a25ea0019c748e9fb5bde0af021d323b7aca49399751af237944d53727c","last_reissued_at":"2026-05-18T01:58:03.923777Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:58:03.923777Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1203.5280","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":"2026-05-18T01:58:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"29BB4baMaL3PuMvlXOx5T0Vcc/iCg2WXdzwGhvPRR1o0qDipbwWGIUyyaEx+qKootHiRjnfwfg2kZuUUN186BA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-29T17:11:30.052634Z"},"content_sha256":"bda3aa1f42934f5e2f9b8a424e54b4e84205722d7079ac2168318cab7955ee9a","schema_version":"1.0","event_id":"sha256:bda3aa1f42934f5e2f9b8a424e54b4e84205722d7079ac2168318cab7955ee9a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:YRVSUJPKAAM4OSHJ7NN54CXQEH","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Effect of Star Formation on the Redshift Evolution of Interstellar Metals, Atomic and Molecular Gas in Galaxies","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.GA","authors_text":"Cheng Li, Guinevere Kauffmann, Jian Fu, Qi Guo","submitted_at":"2012-03-23T16:15:04Z","abstract_excerpt":"We examine how the atomic and molecular gas components of galaxies evolve to higher redshifts using the semi-analytic galaxy formation models of Fu et al. (2010) in which we track the surface density profiles of gas in disks. We adopt two different prescriptions based either on gas surface density and metallicity, or on interstellar pressure, to compute the molecular fraction as a function of radius in each disk. We demonstrate that the adopted star formation law determines how the {\\em balance} between gas, stars and metals changes with time in the star-forming galaxy population, but does not"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1203.5280","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":"2026-05-18T01:58:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"W7V8Eij9fRHja8KPK2Yj3BqqNQjoxz7LvHlx8HEVf4vksX3LpR6/SlgO+9EHylfXuGdAq+813WKF6IEqiLgSDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-29T17:11:30.053347Z"},"content_sha256":"90bcacae2efea3f2b471474b198e137c819f610d9ff8fbb1a7760cd53b13606d","schema_version":"1.0","event_id":"sha256:90bcacae2efea3f2b471474b198e137c819f610d9ff8fbb1a7760cd53b13606d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/YRVSUJPKAAM4OSHJ7NN54CXQEH/bundle.json","state_url":"https://pith.science/pith/YRVSUJPKAAM4OSHJ7NN54CXQEH/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/YRVSUJPKAAM4OSHJ7NN54CXQEH/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":"2026-05-29T17:11:30Z","links":{"resolver":"https://pith.science/pith/YRVSUJPKAAM4OSHJ7NN54CXQEH","bundle":"https://pith.science/pith/YRVSUJPKAAM4OSHJ7NN54CXQEH/bundle.json","state":"https://pith.science/pith/YRVSUJPKAAM4OSHJ7NN54CXQEH/state.json","well_known_bundle":"https://pith.science/.well-known/pith/YRVSUJPKAAM4OSHJ7NN54CXQEH/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:YRVSUJPKAAM4OSHJ7NN54CXQEH","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":"2058431967eff310719c3edf7c4361709416891ea980b2714304d20e3a483d39","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2012-03-23T16:15:04Z","title_canon_sha256":"16e2873ff5033a26ca169980818e6d62680305c142794374bb51c53bf7955cab"},"schema_version":"1.0","source":{"id":"1203.5280","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1203.5280","created_at":"2026-05-18T01:58:03Z"},{"alias_kind":"arxiv_version","alias_value":"1203.5280v2","created_at":"2026-05-18T01:58:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1203.5280","created_at":"2026-05-18T01:58:03Z"},{"alias_kind":"pith_short_12","alias_value":"YRVSUJPKAAM4","created_at":"2026-05-18T12:27:30Z"},{"alias_kind":"pith_short_16","alias_value":"YRVSUJPKAAM4OSHJ","created_at":"2026-05-18T12:27:30Z"},{"alias_kind":"pith_short_8","alias_value":"YRVSUJPK","created_at":"2026-05-18T12:27:30Z"}],"graph_snapshots":[{"event_id":"sha256:90bcacae2efea3f2b471474b198e137c819f610d9ff8fbb1a7760cd53b13606d","target":"graph","created_at":"2026-05-18T01:58:03Z","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 examine how the atomic and molecular gas components of galaxies evolve to higher redshifts using the semi-analytic galaxy formation models of Fu et al. (2010) in which we track the surface density profiles of gas in disks. We adopt two different prescriptions based either on gas surface density and metallicity, or on interstellar pressure, to compute the molecular fraction as a function of radius in each disk. We demonstrate that the adopted star formation law determines how the {\\em balance} between gas, stars and metals changes with time in the star-forming galaxy population, but does not","authors_text":"Cheng Li, Guinevere Kauffmann, Jian Fu, Qi Guo","cross_cats":["astro-ph.CO"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2012-03-23T16:15:04Z","title":"The Effect of Star Formation on the Redshift Evolution of Interstellar Metals, Atomic and Molecular Gas in Galaxies"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1203.5280","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:bda3aa1f42934f5e2f9b8a424e54b4e84205722d7079ac2168318cab7955ee9a","target":"record","created_at":"2026-05-18T01:58:03Z","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":"2058431967eff310719c3edf7c4361709416891ea980b2714304d20e3a483d39","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2012-03-23T16:15:04Z","title_canon_sha256":"16e2873ff5033a26ca169980818e6d62680305c142794374bb51c53bf7955cab"},"schema_version":"1.0","source":{"id":"1203.5280","kind":"arxiv","version":2}},"canonical_sha256":"c46b2a25ea0019c748e9fb5bde0af021d323b7aca49399751af237944d53727c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c46b2a25ea0019c748e9fb5bde0af021d323b7aca49399751af237944d53727c","first_computed_at":"2026-05-18T01:58:03.923777Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:58:03.923777Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"laTuMfJO+FjU2ls+g0vv4iMOiaAKYoZ+MLMGll1bgcvvGAHOGItorrkcjIzZJkElofWJ3Y7tZoF8UQcEqaKGAg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:58:03.924400Z","signed_message":"canonical_sha256_bytes"},"source_id":"1203.5280","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:bda3aa1f42934f5e2f9b8a424e54b4e84205722d7079ac2168318cab7955ee9a","sha256:90bcacae2efea3f2b471474b198e137c819f610d9ff8fbb1a7760cd53b13606d"],"state_sha256":"f9657a55066a4d6cb145411ba257333f0ffd13f8f2860f66c13dcd182712be95"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"I2UR3tlRyuzMg21UtVd4ZcJbdIF5aabCfVfAPIlUxUUudPp+XL4FnYq4aojxkSrdgLDKTSYhIeh/bcfZFN1NCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-29T17:11:30.057133Z","bundle_sha256":"27d444c7d679213397a98c23aa659a76bf22e5af479a13d5d52845d32013d7a8"}}