{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:MUQHMDELURQFM54KBVNGR5266D","short_pith_number":"pith:MUQHMDEL","canonical_record":{"source":{"id":"2008.09127","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2020-08-20T18:00:03Z","cross_cats_sorted":[],"title_canon_sha256":"de76b027d9992fa7abad5c194839f7cda229d90e6a8f0077663620ad3a82b26a","abstract_canon_sha256":"d71fcde88996e23319df91cff196f89850ed8a3b71ebefd8ac7ee8626154b75e"},"schema_version":"1.0"},"canonical_sha256":"6520760c8ba46056778a0d5a68f75ef0e710c5540870f22ceef2db3f2ab03817","source":{"kind":"arxiv","id":"2008.09127","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2008.09127","created_at":"2026-07-05T01:32:13Z"},{"alias_kind":"arxiv_version","alias_value":"2008.09127v1","created_at":"2026-07-05T01:32:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2008.09127","created_at":"2026-07-05T01:32:13Z"},{"alias_kind":"pith_short_12","alias_value":"MUQHMDELURQF","created_at":"2026-07-05T01:32:13Z"},{"alias_kind":"pith_short_16","alias_value":"MUQHMDELURQFM54K","created_at":"2026-07-05T01:32:13Z"},{"alias_kind":"pith_short_8","alias_value":"MUQHMDEL","created_at":"2026-07-05T01:32:13Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:MUQHMDELURQFM54KBVNGR5266D","target":"record","payload":{"canonical_record":{"source":{"id":"2008.09127","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2020-08-20T18:00:03Z","cross_cats_sorted":[],"title_canon_sha256":"de76b027d9992fa7abad5c194839f7cda229d90e6a8f0077663620ad3a82b26a","abstract_canon_sha256":"d71fcde88996e23319df91cff196f89850ed8a3b71ebefd8ac7ee8626154b75e"},"schema_version":"1.0"},"canonical_sha256":"6520760c8ba46056778a0d5a68f75ef0e710c5540870f22ceef2db3f2ab03817","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:32:13.798403Z","signature_b64":"PpJuiZf5TMkBuuMsjwBC0iGODF4zABcMAxDYH956B3561qPwM5mNMMVio0OmIwxKjOHh8Kl/UXUZ+E0cRrSwCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6520760c8ba46056778a0d5a68f75ef0e710c5540870f22ceef2db3f2ab03817","last_reissued_at":"2026-07-05T01:32:13.797933Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:32:13.797933Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2008.09127","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":"2026-07-05T01:32:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"k27LNnBESfSq31TOkhx9z56nm36vXWSrzclDz8QaZkaG5CjYOm5K21jPIdNUs29EnIEJwFodT04u3BdeSDSVBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-22T00:30:22.200639Z"},"content_sha256":"52fa0e6c87035b9d465f151852ae30364315e26a0daac6b0fc59d2a252c368f8","schema_version":"1.0","event_id":"sha256:52fa0e6c87035b9d465f151852ae30364315e26a0daac6b0fc59d2a252c368f8"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:MUQHMDELURQFM54KBVNGR5266D","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Gas accretion regulates the scatter of the mass-metallicity relation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Fabio Fontanot, Gabriella De Lucia, Lizhi Xie, Michaela Hirschmann","submitted_at":"2020-08-20T18:00:03Z","abstract_excerpt":"In this paper, we take advantage of the GAlaxy Evolution and Assembly (GAEA) semi-analytic model to analyse the origin of secondary dependencies in the local galaxy mass - gas metallicity relation. Our model reproduces quite well the trends observed in the local Universe as a function of galaxy star formation rate and different gas-mass phases. We show that the cold gas content (whose largest fraction is represented by the atomic gas phase) can be considered as the third parameter governing the scatter of the predicted mass-metallicity relation, in agreement with the most recent observational "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2008.09127","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2008.09127/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T01:32:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"01pX/QZgQz8NAEd9coWTTzD9VQaVWQ5DwFGmO/JHu9Ieh7UBFOpK4P0a3xxkagBNFnP2qi+hHIX3YCwyrUk6Aw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-22T00:30:22.201012Z"},"content_sha256":"d03bd3ff03394949887b95132c5f6324ed3517eec4c14f7ee7badfd6661a8f10","schema_version":"1.0","event_id":"sha256:d03bd3ff03394949887b95132c5f6324ed3517eec4c14f7ee7badfd6661a8f10"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/MUQHMDELURQFM54KBVNGR5266D/bundle.json","state_url":"https://pith.science/pith/MUQHMDELURQFM54KBVNGR5266D/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/MUQHMDELURQFM54KBVNGR5266D/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":"2026-07-22T00:30:22Z","links":{"resolver":"https://pith.science/pith/MUQHMDELURQFM54KBVNGR5266D","bundle":"https://pith.science/pith/MUQHMDELURQFM54KBVNGR5266D/bundle.json","state":"https://pith.science/pith/MUQHMDELURQFM54KBVNGR5266D/state.json","well_known_bundle":"https://pith.science/.well-known/pith/MUQHMDELURQFM54KBVNGR5266D/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:MUQHMDELURQFM54KBVNGR5266D","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":"d71fcde88996e23319df91cff196f89850ed8a3b71ebefd8ac7ee8626154b75e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2020-08-20T18:00:03Z","title_canon_sha256":"de76b027d9992fa7abad5c194839f7cda229d90e6a8f0077663620ad3a82b26a"},"schema_version":"1.0","source":{"id":"2008.09127","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2008.09127","created_at":"2026-07-05T01:32:13Z"},{"alias_kind":"arxiv_version","alias_value":"2008.09127v1","created_at":"2026-07-05T01:32:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2008.09127","created_at":"2026-07-05T01:32:13Z"},{"alias_kind":"pith_short_12","alias_value":"MUQHMDELURQF","created_at":"2026-07-05T01:32:13Z"},{"alias_kind":"pith_short_16","alias_value":"MUQHMDELURQFM54K","created_at":"2026-07-05T01:32:13Z"},{"alias_kind":"pith_short_8","alias_value":"MUQHMDEL","created_at":"2026-07-05T01:32:13Z"}],"graph_snapshots":[{"event_id":"sha256:d03bd3ff03394949887b95132c5f6324ed3517eec4c14f7ee7badfd6661a8f10","target":"graph","created_at":"2026-07-05T01:32:13Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2008.09127/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"In this paper, we take advantage of the GAlaxy Evolution and Assembly (GAEA) semi-analytic model to analyse the origin of secondary dependencies in the local galaxy mass - gas metallicity relation. Our model reproduces quite well the trends observed in the local Universe as a function of galaxy star formation rate and different gas-mass phases. We show that the cold gas content (whose largest fraction is represented by the atomic gas phase) can be considered as the third parameter governing the scatter of the predicted mass-metallicity relation, in agreement with the most recent observational ","authors_text":"Fabio Fontanot, Gabriella De Lucia, Lizhi Xie, Michaela Hirschmann","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2020-08-20T18:00:03Z","title":"Gas accretion regulates the scatter of the mass-metallicity relation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2008.09127","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":"sha256:52fa0e6c87035b9d465f151852ae30364315e26a0daac6b0fc59d2a252c368f8","target":"record","created_at":"2026-07-05T01:32:13Z","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":"d71fcde88996e23319df91cff196f89850ed8a3b71ebefd8ac7ee8626154b75e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2020-08-20T18:00:03Z","title_canon_sha256":"de76b027d9992fa7abad5c194839f7cda229d90e6a8f0077663620ad3a82b26a"},"schema_version":"1.0","source":{"id":"2008.09127","kind":"arxiv","version":1}},"canonical_sha256":"6520760c8ba46056778a0d5a68f75ef0e710c5540870f22ceef2db3f2ab03817","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6520760c8ba46056778a0d5a68f75ef0e710c5540870f22ceef2db3f2ab03817","first_computed_at":"2026-07-05T01:32:13.797933Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:32:13.797933Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"PpJuiZf5TMkBuuMsjwBC0iGODF4zABcMAxDYH956B3561qPwM5mNMMVio0OmIwxKjOHh8Kl/UXUZ+E0cRrSwCA==","signature_status":"signed_v1","signed_at":"2026-07-05T01:32:13.798403Z","signed_message":"canonical_sha256_bytes"},"source_id":"2008.09127","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:52fa0e6c87035b9d465f151852ae30364315e26a0daac6b0fc59d2a252c368f8","sha256:d03bd3ff03394949887b95132c5f6324ed3517eec4c14f7ee7badfd6661a8f10"],"state_sha256":"237a4d14d185646dcb04b786a02c1e44e9489937cbcbc83ee942ecf2ff61480b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bS8YADDFvVqeDD8h3ZVTtSjWzLz3bXppdZCid3J6loZtWc+b8clAqJH8xugcKFEAvN0faIb9OygurbZiqSMRBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-22T00:30:22.203114Z","bundle_sha256":"a9c4e355e30450a2cdd91b1cef4a10e663d85d39561a6431ef9875ca0f42802d"}}