{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:WSLB3TQTKKJZF3EDV3NBCL5YB5","short_pith_number":"pith:WSLB3TQT","canonical_record":{"source":{"id":"1506.05303","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-06-17T12:34:01Z","cross_cats_sorted":[],"title_canon_sha256":"12450ce23091ce4cfe45f2e983a91e6d2e81e06e9e06366a21364463ad32b5b6","abstract_canon_sha256":"e5d51df2dfb15daea3fd77a5c21e6330e80ee2853d74e96019edc0bd50368915"},"schema_version":"1.0"},"canonical_sha256":"b4961dce13529392ec83aeda112fb80f6dff9e86eb0dd110a9ecaad6a938caf6","source":{"kind":"arxiv","id":"1506.05303","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1506.05303","created_at":"2026-05-18T01:37:01Z"},{"alias_kind":"arxiv_version","alias_value":"1506.05303v2","created_at":"2026-05-18T01:37:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1506.05303","created_at":"2026-05-18T01:37:01Z"},{"alias_kind":"pith_short_12","alias_value":"WSLB3TQTKKJZ","created_at":"2026-05-18T12:29:47Z"},{"alias_kind":"pith_short_16","alias_value":"WSLB3TQTKKJZF3ED","created_at":"2026-05-18T12:29:47Z"},{"alias_kind":"pith_short_8","alias_value":"WSLB3TQT","created_at":"2026-05-18T12:29:47Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:WSLB3TQTKKJZF3EDV3NBCL5YB5","target":"record","payload":{"canonical_record":{"source":{"id":"1506.05303","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-06-17T12:34:01Z","cross_cats_sorted":[],"title_canon_sha256":"12450ce23091ce4cfe45f2e983a91e6d2e81e06e9e06366a21364463ad32b5b6","abstract_canon_sha256":"e5d51df2dfb15daea3fd77a5c21e6330e80ee2853d74e96019edc0bd50368915"},"schema_version":"1.0"},"canonical_sha256":"b4961dce13529392ec83aeda112fb80f6dff9e86eb0dd110a9ecaad6a938caf6","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:37:01.359827Z","signature_b64":"EmdBxkdj8G2THXjF0r2vkvT8F7B+XbnwaqZUgpb7Wad5N8BjYay8ZoaklMeNrygC/ktR9cRm9DxQKituZfR9Cg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b4961dce13529392ec83aeda112fb80f6dff9e86eb0dd110a9ecaad6a938caf6","last_reissued_at":"2026-05-18T01:37:01.359243Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:37:01.359243Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1506.05303","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":"2026-05-18T01:37:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FYtJxGQLt5YfTHWzqd7R86YW4ZhRnYsKtqjxi8PHGekZqwZk27Awyv2mqzIlEgdDvEGrm7irGSEIAk0peRshAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T19:18:21.268717Z"},"content_sha256":"9ad7f8652f0ad014b819b734e70041a8c36eed08c1d256a7b0608b8594b9c5bf","schema_version":"1.0","event_id":"sha256:9ad7f8652f0ad014b819b734e70041a8c36eed08c1d256a7b0608b8594b9c5bf"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:WSLB3TQTKKJZF3EDV3NBCL5YB5","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Dynamical Constraints on the Origin of Multiple Stellar Populations in Globular Clusters","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Holger Baumgardt, Pouria Khalaj","submitted_at":"2015-06-17T12:34:01Z","abstract_excerpt":"We have carried out a large grid of N-body simulations in order to investigate if mass-loss as a result of primordial gas expulsion can be responsible for the large fraction of second generation stars in globular clusters (GCs) with multiple stellar populations (MSPs). Our clusters start with two stellar populations in which $10\\%$ of all stars are second generation stars. We simulate clusters with different initial masses, different ratios of the half-mass radius of first to second generation stars, different primordial gas fractions and Galactic tidal fields with varying strength. We then le"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1506.05303","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":"2026-05-18T01:37:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zFkI3oXO2DExhB5vUW8Gs5WtrAcl47EDBRbVSiPgPxRFP0mdIywWizsrpTZNIHNxsf07NghW2l1ied2rlN3yBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T19:18:21.269092Z"},"content_sha256":"7a7f06b019edb7010a9c729c7800043c890cbc8eeba30e24d53bf503b5527c98","schema_version":"1.0","event_id":"sha256:7a7f06b019edb7010a9c729c7800043c890cbc8eeba30e24d53bf503b5527c98"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/WSLB3TQTKKJZF3EDV3NBCL5YB5/bundle.json","state_url":"https://pith.science/pith/WSLB3TQTKKJZF3EDV3NBCL5YB5/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/WSLB3TQTKKJZF3EDV3NBCL5YB5/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":"2026-08-03T19:18:21Z","links":{"resolver":"https://pith.science/pith/WSLB3TQTKKJZF3EDV3NBCL5YB5","bundle":"https://pith.science/pith/WSLB3TQTKKJZF3EDV3NBCL5YB5/bundle.json","state":"https://pith.science/pith/WSLB3TQTKKJZF3EDV3NBCL5YB5/state.json","well_known_bundle":"https://pith.science/.well-known/pith/WSLB3TQTKKJZF3EDV3NBCL5YB5/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:WSLB3TQTKKJZF3EDV3NBCL5YB5","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":"e5d51df2dfb15daea3fd77a5c21e6330e80ee2853d74e96019edc0bd50368915","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-06-17T12:34:01Z","title_canon_sha256":"12450ce23091ce4cfe45f2e983a91e6d2e81e06e9e06366a21364463ad32b5b6"},"schema_version":"1.0","source":{"id":"1506.05303","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1506.05303","created_at":"2026-05-18T01:37:01Z"},{"alias_kind":"arxiv_version","alias_value":"1506.05303v2","created_at":"2026-05-18T01:37:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1506.05303","created_at":"2026-05-18T01:37:01Z"},{"alias_kind":"pith_short_12","alias_value":"WSLB3TQTKKJZ","created_at":"2026-05-18T12:29:47Z"},{"alias_kind":"pith_short_16","alias_value":"WSLB3TQTKKJZF3ED","created_at":"2026-05-18T12:29:47Z"},{"alias_kind":"pith_short_8","alias_value":"WSLB3TQT","created_at":"2026-05-18T12:29:47Z"}],"graph_snapshots":[{"event_id":"sha256:7a7f06b019edb7010a9c729c7800043c890cbc8eeba30e24d53bf503b5527c98","target":"graph","created_at":"2026-05-18T01:37:01Z","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 carried out a large grid of N-body simulations in order to investigate if mass-loss as a result of primordial gas expulsion can be responsible for the large fraction of second generation stars in globular clusters (GCs) with multiple stellar populations (MSPs). Our clusters start with two stellar populations in which $10\\%$ of all stars are second generation stars. We simulate clusters with different initial masses, different ratios of the half-mass radius of first to second generation stars, different primordial gas fractions and Galactic tidal fields with varying strength. We then le","authors_text":"Holger Baumgardt, Pouria Khalaj","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-06-17T12:34:01Z","title":"Dynamical Constraints on the Origin of Multiple Stellar Populations in Globular Clusters"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1506.05303","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":"sha256:9ad7f8652f0ad014b819b734e70041a8c36eed08c1d256a7b0608b8594b9c5bf","target":"record","created_at":"2026-05-18T01:37:01Z","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":"e5d51df2dfb15daea3fd77a5c21e6330e80ee2853d74e96019edc0bd50368915","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-06-17T12:34:01Z","title_canon_sha256":"12450ce23091ce4cfe45f2e983a91e6d2e81e06e9e06366a21364463ad32b5b6"},"schema_version":"1.0","source":{"id":"1506.05303","kind":"arxiv","version":2}},"canonical_sha256":"b4961dce13529392ec83aeda112fb80f6dff9e86eb0dd110a9ecaad6a938caf6","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b4961dce13529392ec83aeda112fb80f6dff9e86eb0dd110a9ecaad6a938caf6","first_computed_at":"2026-05-18T01:37:01.359243Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:37:01.359243Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"EmdBxkdj8G2THXjF0r2vkvT8F7B+XbnwaqZUgpb7Wad5N8BjYay8ZoaklMeNrygC/ktR9cRm9DxQKituZfR9Cg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:37:01.359827Z","signed_message":"canonical_sha256_bytes"},"source_id":"1506.05303","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9ad7f8652f0ad014b819b734e70041a8c36eed08c1d256a7b0608b8594b9c5bf","sha256:7a7f06b019edb7010a9c729c7800043c890cbc8eeba30e24d53bf503b5527c98"],"state_sha256":"b1b54ae836d9e472eebe77125f450ba7a02e6d51f66be635c61529c50e51380a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fp37TfJn87xQZYk9J3gUd/a1MIUEBgyYLFl6kSXWrHV59e6yL0OnzH0vdcpaNT4uXaWUDBzOvEVfjeP7vsAIBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-03T19:18:21.271839Z","bundle_sha256":"3a82e88a5d0528d7cb34eaa6022b049ecb88bae04e9d9132df4e4ff518a50c66"}}