{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2009:ZOKIRMM3SU27PLBHOTNUWVM5DC","short_pith_number":"pith:ZOKIRMM3","canonical_record":{"source":{"id":"0908.2445","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2009-08-17T14:08:36Z","cross_cats_sorted":[],"title_canon_sha256":"cbc0ba712941b5619d3df6f98b33ce47abfe2e78d4ea688136cb6c673be3240a","abstract_canon_sha256":"bad36478e657802003a4d488331807da3cfb731792f6462351ab0cbf8204d4fd"},"schema_version":"1.0"},"canonical_sha256":"cb9488b19b9535f7ac2774db4b559d18a78d5b0acdeecb8169f20ae9f694c8f7","source":{"kind":"arxiv","id":"0908.2445","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0908.2445","created_at":"2026-05-18T02:12:25Z"},{"alias_kind":"arxiv_version","alias_value":"0908.2445v1","created_at":"2026-05-18T02:12:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0908.2445","created_at":"2026-05-18T02:12:25Z"},{"alias_kind":"pith_short_12","alias_value":"ZOKIRMM3SU27","created_at":"2026-05-18T12:26:03Z"},{"alias_kind":"pith_short_16","alias_value":"ZOKIRMM3SU27PLBH","created_at":"2026-05-18T12:26:03Z"},{"alias_kind":"pith_short_8","alias_value":"ZOKIRMM3","created_at":"2026-05-18T12:26:03Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2009:ZOKIRMM3SU27PLBHOTNUWVM5DC","target":"record","payload":{"canonical_record":{"source":{"id":"0908.2445","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2009-08-17T14:08:36Z","cross_cats_sorted":[],"title_canon_sha256":"cbc0ba712941b5619d3df6f98b33ce47abfe2e78d4ea688136cb6c673be3240a","abstract_canon_sha256":"bad36478e657802003a4d488331807da3cfb731792f6462351ab0cbf8204d4fd"},"schema_version":"1.0"},"canonical_sha256":"cb9488b19b9535f7ac2774db4b559d18a78d5b0acdeecb8169f20ae9f694c8f7","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:12:25.865492Z","signature_b64":"TGIR7+W5ldDPdOwhx7NvsT8JZVD4+QdaICEsLWx7bnixc4NEKRIbuEKNpilDRybAg1IQHu08UVKBkO3Z4LNnAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"cb9488b19b9535f7ac2774db4b559d18a78d5b0acdeecb8169f20ae9f694c8f7","last_reissued_at":"2026-05-18T02:12:25.864767Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:12:25.864767Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0908.2445","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":"2026-05-18T02:12:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TT8BXPbj7f6Csbuz5a+iSwx30JtMxj9xwEtsHo+M2uZVXHm0TAqH+xkOybI/1lkxkcnYhT/y+iNRXgIV6kIgCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T04:39:24.744127Z"},"content_sha256":"270eb8c5bd37e00dcfd5b779e66f3faafe2f2fc9ef149bfdd17331b662f7083b","schema_version":"1.0","event_id":"sha256:270eb8c5bd37e00dcfd5b779e66f3faafe2f2fc9ef149bfdd17331b662f7083b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2009:ZOKIRMM3SU27PLBHOTNUWVM5DC","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Abundance structure and chemical evolution of the Galactic disc","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"(2) Lund Observatory, Chile, Lund, Santiago, S. Feltzing (2) ((1) European Southern Observatory, Sweden), T. Bensby (1)","submitted_at":"2009-08-17T14:08:36Z","abstract_excerpt":"We have obtained high-resolution, high signal-to-noise spectra for 899 F and G dwarf stars in the Solar neighbourhood. The stars were selected on the basis of their kinematic properties to trace the thin and thick discs, the Hercules stream, and the metal-rich stellar halo. A significant number of stars with kinematic properties 'in between' the thin and thick discs were also observed in order to in greater detail investigate the dichotomy of the Galactic disc. All stars have been homogeneously analysed, using the exact same methods, atomic data, model atmospheres, etc., and also truly differe"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0908.2445","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":"2026-05-18T02:12:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NxcxlvXQAXjl9fX8NEpyosF/H0zPa9ymb5le7kBmQfmyWh5nkrR/YK63th28cr9DmevGCn5kYCR0RezzOyP+CA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T04:39:24.744794Z"},"content_sha256":"f2eaf351df44755ef74865f0b5ab437eb8f792495279ef63feeea7f943fd4495","schema_version":"1.0","event_id":"sha256:f2eaf351df44755ef74865f0b5ab437eb8f792495279ef63feeea7f943fd4495"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ZOKIRMM3SU27PLBHOTNUWVM5DC/bundle.json","state_url":"https://pith.science/pith/ZOKIRMM3SU27PLBHOTNUWVM5DC/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ZOKIRMM3SU27PLBHOTNUWVM5DC/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":"2026-06-08T04:39:24Z","links":{"resolver":"https://pith.science/pith/ZOKIRMM3SU27PLBHOTNUWVM5DC","bundle":"https://pith.science/pith/ZOKIRMM3SU27PLBHOTNUWVM5DC/bundle.json","state":"https://pith.science/pith/ZOKIRMM3SU27PLBHOTNUWVM5DC/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ZOKIRMM3SU27PLBHOTNUWVM5DC/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:ZOKIRMM3SU27PLBHOTNUWVM5DC","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":"bad36478e657802003a4d488331807da3cfb731792f6462351ab0cbf8204d4fd","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2009-08-17T14:08:36Z","title_canon_sha256":"cbc0ba712941b5619d3df6f98b33ce47abfe2e78d4ea688136cb6c673be3240a"},"schema_version":"1.0","source":{"id":"0908.2445","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0908.2445","created_at":"2026-05-18T02:12:25Z"},{"alias_kind":"arxiv_version","alias_value":"0908.2445v1","created_at":"2026-05-18T02:12:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0908.2445","created_at":"2026-05-18T02:12:25Z"},{"alias_kind":"pith_short_12","alias_value":"ZOKIRMM3SU27","created_at":"2026-05-18T12:26:03Z"},{"alias_kind":"pith_short_16","alias_value":"ZOKIRMM3SU27PLBH","created_at":"2026-05-18T12:26:03Z"},{"alias_kind":"pith_short_8","alias_value":"ZOKIRMM3","created_at":"2026-05-18T12:26:03Z"}],"graph_snapshots":[{"event_id":"sha256:f2eaf351df44755ef74865f0b5ab437eb8f792495279ef63feeea7f943fd4495","target":"graph","created_at":"2026-05-18T02:12:25Z","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 have obtained high-resolution, high signal-to-noise spectra for 899 F and G dwarf stars in the Solar neighbourhood. The stars were selected on the basis of their kinematic properties to trace the thin and thick discs, the Hercules stream, and the metal-rich stellar halo. A significant number of stars with kinematic properties 'in between' the thin and thick discs were also observed in order to in greater detail investigate the dichotomy of the Galactic disc. All stars have been homogeneously analysed, using the exact same methods, atomic data, model atmospheres, etc., and also truly differe","authors_text":"(2) Lund Observatory, Chile, Lund, Santiago, S. Feltzing (2) ((1) European Southern Observatory, Sweden), T. Bensby (1)","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2009-08-17T14:08:36Z","title":"Abundance structure and chemical evolution of the Galactic disc"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0908.2445","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":"sha256:270eb8c5bd37e00dcfd5b779e66f3faafe2f2fc9ef149bfdd17331b662f7083b","target":"record","created_at":"2026-05-18T02:12:25Z","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":"bad36478e657802003a4d488331807da3cfb731792f6462351ab0cbf8204d4fd","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2009-08-17T14:08:36Z","title_canon_sha256":"cbc0ba712941b5619d3df6f98b33ce47abfe2e78d4ea688136cb6c673be3240a"},"schema_version":"1.0","source":{"id":"0908.2445","kind":"arxiv","version":1}},"canonical_sha256":"cb9488b19b9535f7ac2774db4b559d18a78d5b0acdeecb8169f20ae9f694c8f7","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"cb9488b19b9535f7ac2774db4b559d18a78d5b0acdeecb8169f20ae9f694c8f7","first_computed_at":"2026-05-18T02:12:25.864767Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:12:25.864767Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"TGIR7+W5ldDPdOwhx7NvsT8JZVD4+QdaICEsLWx7bnixc4NEKRIbuEKNpilDRybAg1IQHu08UVKBkO3Z4LNnAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:12:25.865492Z","signed_message":"canonical_sha256_bytes"},"source_id":"0908.2445","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:270eb8c5bd37e00dcfd5b779e66f3faafe2f2fc9ef149bfdd17331b662f7083b","sha256:f2eaf351df44755ef74865f0b5ab437eb8f792495279ef63feeea7f943fd4495"],"state_sha256":"5af72b5c6e23475dc773519d6fc2339cfbd04a2705a0cc2ff50fbff7bf3a4d79"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"esvdKdB7n1NML3MnIzGmiIK09C/i552tzVMtRm4pAtqYra56p2m7R6SAuC6lPolYUVTKAxshtlvFekiDnl3UDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-08T04:39:24.747821Z","bundle_sha256":"186c04dcb150048f4e50cf00d59edab9bad2e4effbdd21ffc4ce9ce3c69049f6"}}