{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:6TJRIX224W2GJ7ETYHPA3N64XG","short_pith_number":"pith:6TJRIX22","canonical_record":{"source":{"id":"1204.4879","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-04-22T11:11:11Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"46a132a8e9ac785859effd423f8b29dba6107045cd31f1379a4d9e61f1a79410","abstract_canon_sha256":"c6fad169aabc448866be950c136efa0c14ae5a4d9b012e3a8d2af4321285c670"},"schema_version":"1.0"},"canonical_sha256":"f4d3145f5ae5b464fc93c1de0db7dcb9ac426fadbc42bb5dd1ce324dec0556f7","source":{"kind":"arxiv","id":"1204.4879","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1204.4879","created_at":"2026-05-18T01:57:47Z"},{"alias_kind":"arxiv_version","alias_value":"1204.4879v3","created_at":"2026-05-18T01:57:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1204.4879","created_at":"2026-05-18T01:57:47Z"},{"alias_kind":"pith_short_12","alias_value":"6TJRIX224W2G","created_at":"2026-05-18T12:26:56Z"},{"alias_kind":"pith_short_16","alias_value":"6TJRIX224W2GJ7ET","created_at":"2026-05-18T12:26:56Z"},{"alias_kind":"pith_short_8","alias_value":"6TJRIX22","created_at":"2026-05-18T12:26:56Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:6TJRIX224W2GJ7ETYHPA3N64XG","target":"record","payload":{"canonical_record":{"source":{"id":"1204.4879","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-04-22T11:11:11Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"46a132a8e9ac785859effd423f8b29dba6107045cd31f1379a4d9e61f1a79410","abstract_canon_sha256":"c6fad169aabc448866be950c136efa0c14ae5a4d9b012e3a8d2af4321285c670"},"schema_version":"1.0"},"canonical_sha256":"f4d3145f5ae5b464fc93c1de0db7dcb9ac426fadbc42bb5dd1ce324dec0556f7","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:57:47.674697Z","signature_b64":"iBHuYNhXEcgqzgO8i50NyFnRrt/ERsqnejyR/6AsztrV7TxUY1nBiB9eQ4+KET4+gTSil6jcXdgnrJci1g8IDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f4d3145f5ae5b464fc93c1de0db7dcb9ac426fadbc42bb5dd1ce324dec0556f7","last_reissued_at":"2026-05-18T01:57:47.673882Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:57:47.673882Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1204.4879","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:57:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"yCdFbO2aMZlIZ5nZyH2sHSCv1G1V/2Hm0D9EqrCFm1232ylNFiX0UG6OaDFX4hgSW8Cz6bDrAHPI/pb9t/4sAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T13:34:12.503236Z"},"content_sha256":"89e16e858eebfc8cb3d69416df2c99ace1a4f5dcf9812f6791df466e87b33a6a","schema_version":"1.0","event_id":"sha256:89e16e858eebfc8cb3d69416df2c99ace1a4f5dcf9812f6791df466e87b33a6a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:6TJRIX224W2GJ7ETYHPA3N64XG","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Modelling the composition of a young star cluster ejecta","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.CO","authors_text":"Mercedes Moll\\'a, Roberto Terlevich","submitted_at":"2012-04-22T11:11:11Z","abstract_excerpt":"We have computed with a fine time grid the evolution of the elemental abundances of He, C, N and O ejected by a young (t < 20 Myr) and massive (M$=10^{6}$\\,\\Msun) coeval stellar cluster with a Salpeter initial mass function (IMF) over a wide range of initial abundances. Our computations incorporate the mass loss from massive stars (M >30 Msun) during their wind phase including the Wolf-Rayet phase and the ejecta from the core collapse supernovae. We find that during the Wolf-Rayet phase (t <5 Myr) the cluster ejecta composition suddenly becomes vastly over-abundant in N for all initial abundan"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1204.4879","kind":"arxiv","version":3},"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":"2026-05-18T01:57:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"K4jivGeZWtWWUewZ7X2+sZ8NeWHg4O+vZxWMmflLpIiSLg0/UTdlEPLEJMn/B/OZyLLSCkDjslhQ86R7EOzWCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T13:34:12.504022Z"},"content_sha256":"4f55040d380cecb2330357733437ba991d322ba800f08b9417f88394b7056e71","schema_version":"1.0","event_id":"sha256:4f55040d380cecb2330357733437ba991d322ba800f08b9417f88394b7056e71"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/6TJRIX224W2GJ7ETYHPA3N64XG/bundle.json","state_url":"https://pith.science/pith/6TJRIX224W2GJ7ETYHPA3N64XG/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/6TJRIX224W2GJ7ETYHPA3N64XG/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":"2026-05-31T13:34:12Z","links":{"resolver":"https://pith.science/pith/6TJRIX224W2GJ7ETYHPA3N64XG","bundle":"https://pith.science/pith/6TJRIX224W2GJ7ETYHPA3N64XG/bundle.json","state":"https://pith.science/pith/6TJRIX224W2GJ7ETYHPA3N64XG/state.json","well_known_bundle":"https://pith.science/.well-known/pith/6TJRIX224W2GJ7ETYHPA3N64XG/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:6TJRIX224W2GJ7ETYHPA3N64XG","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":"c6fad169aabc448866be950c136efa0c14ae5a4d9b012e3a8d2af4321285c670","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-04-22T11:11:11Z","title_canon_sha256":"46a132a8e9ac785859effd423f8b29dba6107045cd31f1379a4d9e61f1a79410"},"schema_version":"1.0","source":{"id":"1204.4879","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1204.4879","created_at":"2026-05-18T01:57:47Z"},{"alias_kind":"arxiv_version","alias_value":"1204.4879v3","created_at":"2026-05-18T01:57:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1204.4879","created_at":"2026-05-18T01:57:47Z"},{"alias_kind":"pith_short_12","alias_value":"6TJRIX224W2G","created_at":"2026-05-18T12:26:56Z"},{"alias_kind":"pith_short_16","alias_value":"6TJRIX224W2GJ7ET","created_at":"2026-05-18T12:26:56Z"},{"alias_kind":"pith_short_8","alias_value":"6TJRIX22","created_at":"2026-05-18T12:26:56Z"}],"graph_snapshots":[{"event_id":"sha256:4f55040d380cecb2330357733437ba991d322ba800f08b9417f88394b7056e71","target":"graph","created_at":"2026-05-18T01:57:47Z","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 computed with a fine time grid the evolution of the elemental abundances of He, C, N and O ejected by a young (t < 20 Myr) and massive (M$=10^{6}$\\,\\Msun) coeval stellar cluster with a Salpeter initial mass function (IMF) over a wide range of initial abundances. Our computations incorporate the mass loss from massive stars (M >30 Msun) during their wind phase including the Wolf-Rayet phase and the ejecta from the core collapse supernovae. We find that during the Wolf-Rayet phase (t <5 Myr) the cluster ejecta composition suddenly becomes vastly over-abundant in N for all initial abundan","authors_text":"Mercedes Moll\\'a, Roberto Terlevich","cross_cats":["astro-ph.SR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-04-22T11:11:11Z","title":"Modelling the composition of a young star cluster ejecta"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1204.4879","kind":"arxiv","version":3},"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":"sha256:89e16e858eebfc8cb3d69416df2c99ace1a4f5dcf9812f6791df466e87b33a6a","target":"record","created_at":"2026-05-18T01:57:47Z","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":"c6fad169aabc448866be950c136efa0c14ae5a4d9b012e3a8d2af4321285c670","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-04-22T11:11:11Z","title_canon_sha256":"46a132a8e9ac785859effd423f8b29dba6107045cd31f1379a4d9e61f1a79410"},"schema_version":"1.0","source":{"id":"1204.4879","kind":"arxiv","version":3}},"canonical_sha256":"f4d3145f5ae5b464fc93c1de0db7dcb9ac426fadbc42bb5dd1ce324dec0556f7","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f4d3145f5ae5b464fc93c1de0db7dcb9ac426fadbc42bb5dd1ce324dec0556f7","first_computed_at":"2026-05-18T01:57:47.673882Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:57:47.673882Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"iBHuYNhXEcgqzgO8i50NyFnRrt/ERsqnejyR/6AsztrV7TxUY1nBiB9eQ4+KET4+gTSil6jcXdgnrJci1g8IDw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:57:47.674697Z","signed_message":"canonical_sha256_bytes"},"source_id":"1204.4879","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:89e16e858eebfc8cb3d69416df2c99ace1a4f5dcf9812f6791df466e87b33a6a","sha256:4f55040d380cecb2330357733437ba991d322ba800f08b9417f88394b7056e71"],"state_sha256":"3a084d2bdc0b7620c9351861f9fff580c49c9e0bfe94195a366e77c6835a6d33"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PwzNoItyOt/xE+/ImV47S+T1t3SgFWk/dvdqS/rlu9SroYZZxoVVQkrUl5I1AqW6jDmadQbG3btstSAtcXfgDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T13:34:12.507808Z","bundle_sha256":"048caa941c03828e8530985bb793f26e7b48e5339693eec63d57fc6300380392"}}