{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:EYBJJW4RU3RW3FTZCK76Z7DMLO","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":"a723c187924f519a65939f74658c446cde7f678ba94b7bbd602ac7fe9ca2412d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2010-07-09T20:15:55Z","title_canon_sha256":"c3e77b17718776748aae4bcbfd9e92c6f3203b7f43adf405637790b0665208fc"},"schema_version":"1.0","source":{"id":"1007.1668","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1007.1668","created_at":"2026-05-18T02:06:23Z"},{"alias_kind":"arxiv_version","alias_value":"1007.1668v1","created_at":"2026-05-18T02:06:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1007.1668","created_at":"2026-05-18T02:06:23Z"},{"alias_kind":"pith_short_12","alias_value":"EYBJJW4RU3RW","created_at":"2026-05-18T12:26:06Z"},{"alias_kind":"pith_short_16","alias_value":"EYBJJW4RU3RW3FTZ","created_at":"2026-05-18T12:26:06Z"},{"alias_kind":"pith_short_8","alias_value":"EYBJJW4R","created_at":"2026-05-18T12:26:06Z"}],"graph_snapshots":[{"event_id":"sha256:ed152f0bbfd925e0b1021d52a910036a34e25714ba1902b8ee490d444615a9f0","target":"graph","created_at":"2026-05-18T02:06:23Z","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":"Many observational studies have revealed the presence of multiple stellar generations in Galactic globular clusters. These studies suggest that second-generation stars make up a significant fraction of the current mass of globular clusters, with the second-generation mass fraction ranging from ~50 to 80 per cent in individual clusters. In this Letter we carry out hydrodynamical simulations to explore the dependence of the mass of second-generation stars on the initial mass and structural parameters and stellar initial mass function (IMF) of the parent cluster. We then use the results of these ","authors_text":"Annibale D'Ercole, Enrico Vesperini, Francesca D'Antona, Stephen L.W. McMillan","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2010-07-09T20:15:55Z","title":"The fraction of globular cluster second-generation stars in the Galactic halo"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1007.1668","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:b4aa21bde0fe7f35d2f8bcfc33a453d3842cab8c767ad4c2ded0505d32bf9437","target":"record","created_at":"2026-05-18T02:06:23Z","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":"a723c187924f519a65939f74658c446cde7f678ba94b7bbd602ac7fe9ca2412d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2010-07-09T20:15:55Z","title_canon_sha256":"c3e77b17718776748aae4bcbfd9e92c6f3203b7f43adf405637790b0665208fc"},"schema_version":"1.0","source":{"id":"1007.1668","kind":"arxiv","version":1}},"canonical_sha256":"260294db91a6e36d967912bfecfc6c5b983b6cb8fd526282442ea2d7be9b67cb","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"260294db91a6e36d967912bfecfc6c5b983b6cb8fd526282442ea2d7be9b67cb","first_computed_at":"2026-05-18T02:06:23.264134Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:06:23.264134Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"GujS5SBLiC1vx059DceBw6/gGieQR9Xsm6/8G0Ec4b0NPGiDRgzXkSFl63FZ8/j/zJC/LZuczQC4Rc8MATmgBw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:06:23.264806Z","signed_message":"canonical_sha256_bytes"},"source_id":"1007.1668","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b4aa21bde0fe7f35d2f8bcfc33a453d3842cab8c767ad4c2ded0505d32bf9437","sha256:ed152f0bbfd925e0b1021d52a910036a34e25714ba1902b8ee490d444615a9f0"],"state_sha256":"218352947158dd3d35c84d96cc11662cc3beaaad43c75be55652643c51bea2dd"}