{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:AUXDW6MGXHREUCNWFF2CMS2LN2","short_pith_number":"pith:AUXDW6MG","canonical_record":{"source":{"id":"1305.3059","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-05-14T08:31:46Z","cross_cats_sorted":[],"title_canon_sha256":"22d1b83d368bdfe40ceecd09dabe25df7c5a08f84e35411a054997edb7dad59e","abstract_canon_sha256":"7bb8b2ffff2bdef04162750e99c41c50650dc22dd76ae126ed710e820057e39b"},"schema_version":"1.0"},"canonical_sha256":"052e3b7986b9e24a09b62974264b4b6eac3791858e4c434b2ee9c619f20acae3","source":{"kind":"arxiv","id":"1305.3059","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1305.3059","created_at":"2026-05-18T01:50:02Z"},{"alias_kind":"arxiv_version","alias_value":"1305.3059v2","created_at":"2026-05-18T01:50:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1305.3059","created_at":"2026-05-18T01:50:02Z"},{"alias_kind":"pith_short_12","alias_value":"AUXDW6MGXHRE","created_at":"2026-05-18T12:27:38Z"},{"alias_kind":"pith_short_16","alias_value":"AUXDW6MGXHREUCNW","created_at":"2026-05-18T12:27:38Z"},{"alias_kind":"pith_short_8","alias_value":"AUXDW6MG","created_at":"2026-05-18T12:27:38Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:AUXDW6MGXHREUCNWFF2CMS2LN2","target":"record","payload":{"canonical_record":{"source":{"id":"1305.3059","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-05-14T08:31:46Z","cross_cats_sorted":[],"title_canon_sha256":"22d1b83d368bdfe40ceecd09dabe25df7c5a08f84e35411a054997edb7dad59e","abstract_canon_sha256":"7bb8b2ffff2bdef04162750e99c41c50650dc22dd76ae126ed710e820057e39b"},"schema_version":"1.0"},"canonical_sha256":"052e3b7986b9e24a09b62974264b4b6eac3791858e4c434b2ee9c619f20acae3","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:50:02.437359Z","signature_b64":"4Qah3AWdFImKajmx0l0qb4TADdjf78b5RrKwhD2Qvfuy8n2e9Rq5yWfx62hc3X/IqILFTetbGoNMHAJpqiALBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"052e3b7986b9e24a09b62974264b4b6eac3791858e4c434b2ee9c619f20acae3","last_reissued_at":"2026-05-18T01:50:02.436735Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:50:02.436735Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1305.3059","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":"2026-05-18T01:50:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"OsYNnILd0U1MEkrwltb0UTmN1dPt/dzEeOpDMW9fjC8jYfdEhwjHvAGoPoWK65YN9GCekTSaBEDJXN5PWInzDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T00:34:50.583130Z"},"content_sha256":"17529ac7ca1d3912ed0b8c2865e5c4bfdbba29357349c37d2b6d1ce1b2714f76","schema_version":"1.0","event_id":"sha256:17529ac7ca1d3912ed0b8c2865e5c4bfdbba29357349c37d2b6d1ce1b2714f76"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:AUXDW6MGXHREUCNWFF2CMS2LN2","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Spectral matching for abundances of 848 stars of the giant branches of the globular cluster {\\omega} Centauri","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Jeffrey. D. Simpson, P. L. Cottrell","submitted_at":"2013-05-14T08:31:46Z","abstract_excerpt":"We present the effective temperatures, surface gravities and abundances of iron, carbon and barium of 848 giant branch stars, of which 557 also have well-defined nitrogen abundances, of the globular cluster {\\omega} Centauri. This work used photometric sources and lower resolution spectra for this abundance analysis. Spectral indices were used to estimate the oxygen abundance of the stars, leading to a determination of whether a particular star was oxygen-rich or oxygen-poor.\n  The 557-star subset was analyzed in the context of evolutionary groups, with four broad groups identified. These grou"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1305.3059","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":"2026-05-18T01:50:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"DqyiT34CkogLsehXvp+X8cTe1XcLLzEg4Mh2rDQNqNjYHqeARgdzYa7eh7TXv0qSMSq+tcVRjvxWsTehAGUzAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T00:34:50.583829Z"},"content_sha256":"292935af0b9cb9d4490e09d98956076f360e0e5739af48e3ba6a71330dd395c0","schema_version":"1.0","event_id":"sha256:292935af0b9cb9d4490e09d98956076f360e0e5739af48e3ba6a71330dd395c0"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/AUXDW6MGXHREUCNWFF2CMS2LN2/bundle.json","state_url":"https://pith.science/pith/AUXDW6MGXHREUCNWFF2CMS2LN2/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/AUXDW6MGXHREUCNWFF2CMS2LN2/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":"2026-05-26T00:34:50Z","links":{"resolver":"https://pith.science/pith/AUXDW6MGXHREUCNWFF2CMS2LN2","bundle":"https://pith.science/pith/AUXDW6MGXHREUCNWFF2CMS2LN2/bundle.json","state":"https://pith.science/pith/AUXDW6MGXHREUCNWFF2CMS2LN2/state.json","well_known_bundle":"https://pith.science/.well-known/pith/AUXDW6MGXHREUCNWFF2CMS2LN2/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:AUXDW6MGXHREUCNWFF2CMS2LN2","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":"7bb8b2ffff2bdef04162750e99c41c50650dc22dd76ae126ed710e820057e39b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-05-14T08:31:46Z","title_canon_sha256":"22d1b83d368bdfe40ceecd09dabe25df7c5a08f84e35411a054997edb7dad59e"},"schema_version":"1.0","source":{"id":"1305.3059","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1305.3059","created_at":"2026-05-18T01:50:02Z"},{"alias_kind":"arxiv_version","alias_value":"1305.3059v2","created_at":"2026-05-18T01:50:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1305.3059","created_at":"2026-05-18T01:50:02Z"},{"alias_kind":"pith_short_12","alias_value":"AUXDW6MGXHRE","created_at":"2026-05-18T12:27:38Z"},{"alias_kind":"pith_short_16","alias_value":"AUXDW6MGXHREUCNW","created_at":"2026-05-18T12:27:38Z"},{"alias_kind":"pith_short_8","alias_value":"AUXDW6MG","created_at":"2026-05-18T12:27:38Z"}],"graph_snapshots":[{"event_id":"sha256:292935af0b9cb9d4490e09d98956076f360e0e5739af48e3ba6a71330dd395c0","target":"graph","created_at":"2026-05-18T01:50:02Z","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 effective temperatures, surface gravities and abundances of iron, carbon and barium of 848 giant branch stars, of which 557 also have well-defined nitrogen abundances, of the globular cluster {\\omega} Centauri. This work used photometric sources and lower resolution spectra for this abundance analysis. Spectral indices were used to estimate the oxygen abundance of the stars, leading to a determination of whether a particular star was oxygen-rich or oxygen-poor.\n  The 557-star subset was analyzed in the context of evolutionary groups, with four broad groups identified. These grou","authors_text":"Jeffrey. D. Simpson, P. L. Cottrell","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-05-14T08:31:46Z","title":"Spectral matching for abundances of 848 stars of the giant branches of the globular cluster {\\omega} Centauri"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1305.3059","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":"sha256:17529ac7ca1d3912ed0b8c2865e5c4bfdbba29357349c37d2b6d1ce1b2714f76","target":"record","created_at":"2026-05-18T01:50:02Z","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":"7bb8b2ffff2bdef04162750e99c41c50650dc22dd76ae126ed710e820057e39b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-05-14T08:31:46Z","title_canon_sha256":"22d1b83d368bdfe40ceecd09dabe25df7c5a08f84e35411a054997edb7dad59e"},"schema_version":"1.0","source":{"id":"1305.3059","kind":"arxiv","version":2}},"canonical_sha256":"052e3b7986b9e24a09b62974264b4b6eac3791858e4c434b2ee9c619f20acae3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"052e3b7986b9e24a09b62974264b4b6eac3791858e4c434b2ee9c619f20acae3","first_computed_at":"2026-05-18T01:50:02.436735Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:50:02.436735Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"4Qah3AWdFImKajmx0l0qb4TADdjf78b5RrKwhD2Qvfuy8n2e9Rq5yWfx62hc3X/IqILFTetbGoNMHAJpqiALBA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:50:02.437359Z","signed_message":"canonical_sha256_bytes"},"source_id":"1305.3059","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:17529ac7ca1d3912ed0b8c2865e5c4bfdbba29357349c37d2b6d1ce1b2714f76","sha256:292935af0b9cb9d4490e09d98956076f360e0e5739af48e3ba6a71330dd395c0"],"state_sha256":"3a513a9bfdb9335abb8edf843a9215efefb22d534d7f87008c0164c95949fa86"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PPMk0NtgKtzYyIvmlJWnzjJxZfYJ7dJ6RDH2+fLhA0OMse1WzwBqZx+CjG22CNaXQrf2m5ORltSICZECBIyFBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T00:34:50.587454Z","bundle_sha256":"4cd0a78ed65359255d367c3bc56bbc09b9602139f09250b05083c1f06684dc64"}}