{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:NGJVKWOIDLHJE5GKF2GTICEKVN","short_pith_number":"pith:NGJVKWOI","canonical_record":{"source":{"id":"1005.4934","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2010-05-26T20:03:03Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"5727980d87de365c80612496f4a2b79f759b257633c8a646dc7f157c7fb73f68","abstract_canon_sha256":"766cb456ecebc6012ffa56726a0e9c7fa2507ddc18a91f167a5a0a3082c9222c"},"schema_version":"1.0"},"canonical_sha256":"69935559c81ace9274ca2e8d34088aab54ab70c089fba157d81f162210399a0c","source":{"kind":"arxiv","id":"1005.4934","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1005.4934","created_at":"2026-05-18T02:07:07Z"},{"alias_kind":"arxiv_version","alias_value":"1005.4934v2","created_at":"2026-05-18T02:07:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1005.4934","created_at":"2026-05-18T02:07:07Z"},{"alias_kind":"pith_short_12","alias_value":"NGJVKWOIDLHJ","created_at":"2026-05-18T12:26:10Z"},{"alias_kind":"pith_short_16","alias_value":"NGJVKWOIDLHJE5GK","created_at":"2026-05-18T12:26:10Z"},{"alias_kind":"pith_short_8","alias_value":"NGJVKWOI","created_at":"2026-05-18T12:26:10Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:NGJVKWOIDLHJE5GKF2GTICEKVN","target":"record","payload":{"canonical_record":{"source":{"id":"1005.4934","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2010-05-26T20:03:03Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"5727980d87de365c80612496f4a2b79f759b257633c8a646dc7f157c7fb73f68","abstract_canon_sha256":"766cb456ecebc6012ffa56726a0e9c7fa2507ddc18a91f167a5a0a3082c9222c"},"schema_version":"1.0"},"canonical_sha256":"69935559c81ace9274ca2e8d34088aab54ab70c089fba157d81f162210399a0c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:07:07.642954Z","signature_b64":"EjiQrTYJZRHFj4wtqN98836JGEbPJzV66db2lbmEvEg7uvwt2yYvLl0YvNNL19VadcpKLh7GRJOcBNH9Q09YBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"69935559c81ace9274ca2e8d34088aab54ab70c089fba157d81f162210399a0c","last_reissued_at":"2026-05-18T02:07:07.642285Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:07:07.642285Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1005.4934","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":"2026-05-18T02:07:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ufktl33oOJYOpULNAvY3Ip23dmso3jTsgmqrasIrBGEjjCPyRH29MhwN/3xISIySzhHDEjj9yG3KxIG1uFqFAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T22:02:01.859621Z"},"content_sha256":"cb0f40542f587dae51db507c086156765fb0bae3630b607f0f7a713baf186357","schema_version":"1.0","event_id":"sha256:cb0f40542f587dae51db507c086156765fb0bae3630b607f0f7a713baf186357"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:NGJVKWOIDLHJE5GKF2GTICEKVN","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"On the Formation of Multiple Stellar Populations in Globular Clusters","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.GA","authors_text":"Charlie Conroy, David N. Spergel","submitted_at":"2010-05-26T20:03:03Z","abstract_excerpt":"Nearly all globular clusters (GCs) studied to date show evidence for multiple stellar populations, in stark contrast to the conventional view that GCs are a mono-metallic, coeval population of stars. Building on earlier work, we propose a simple physical model for the early evolution (several 10^8 yr) of GCs. We consider the effects of stellar mass-loss, type II and prompt type Ia supernovae, ram pressure, and accretion from the ambient ISM on the development of a young GC's own gas reservoir. In our model, type II SNe from a first generation of star formation clears the GC of its initial gas "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1005.4934","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":"2026-05-18T02:07:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"357stKp9+khrjXEzz+VT88hWN21b8ibKyTFchsPi2BTeqcK4reBYMXop92BhTaKCeVaDzrNQEd7CQxaykdUuBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T22:02:01.860277Z"},"content_sha256":"23a10e79dfcb816b4f1e4eb91d6c14c7121ada1de24ff958a63eeb652ae05074","schema_version":"1.0","event_id":"sha256:23a10e79dfcb816b4f1e4eb91d6c14c7121ada1de24ff958a63eeb652ae05074"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/NGJVKWOIDLHJE5GKF2GTICEKVN/bundle.json","state_url":"https://pith.science/pith/NGJVKWOIDLHJE5GKF2GTICEKVN/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/NGJVKWOIDLHJE5GKF2GTICEKVN/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":"2026-05-28T22:02:01Z","links":{"resolver":"https://pith.science/pith/NGJVKWOIDLHJE5GKF2GTICEKVN","bundle":"https://pith.science/pith/NGJVKWOIDLHJE5GKF2GTICEKVN/bundle.json","state":"https://pith.science/pith/NGJVKWOIDLHJE5GKF2GTICEKVN/state.json","well_known_bundle":"https://pith.science/.well-known/pith/NGJVKWOIDLHJE5GKF2GTICEKVN/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:NGJVKWOIDLHJE5GKF2GTICEKVN","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":"766cb456ecebc6012ffa56726a0e9c7fa2507ddc18a91f167a5a0a3082c9222c","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2010-05-26T20:03:03Z","title_canon_sha256":"5727980d87de365c80612496f4a2b79f759b257633c8a646dc7f157c7fb73f68"},"schema_version":"1.0","source":{"id":"1005.4934","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1005.4934","created_at":"2026-05-18T02:07:07Z"},{"alias_kind":"arxiv_version","alias_value":"1005.4934v2","created_at":"2026-05-18T02:07:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1005.4934","created_at":"2026-05-18T02:07:07Z"},{"alias_kind":"pith_short_12","alias_value":"NGJVKWOIDLHJ","created_at":"2026-05-18T12:26:10Z"},{"alias_kind":"pith_short_16","alias_value":"NGJVKWOIDLHJE5GK","created_at":"2026-05-18T12:26:10Z"},{"alias_kind":"pith_short_8","alias_value":"NGJVKWOI","created_at":"2026-05-18T12:26:10Z"}],"graph_snapshots":[{"event_id":"sha256:23a10e79dfcb816b4f1e4eb91d6c14c7121ada1de24ff958a63eeb652ae05074","target":"graph","created_at":"2026-05-18T02:07:07Z","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":"Nearly all globular clusters (GCs) studied to date show evidence for multiple stellar populations, in stark contrast to the conventional view that GCs are a mono-metallic, coeval population of stars. Building on earlier work, we propose a simple physical model for the early evolution (several 10^8 yr) of GCs. We consider the effects of stellar mass-loss, type II and prompt type Ia supernovae, ram pressure, and accretion from the ambient ISM on the development of a young GC's own gas reservoir. In our model, type II SNe from a first generation of star formation clears the GC of its initial gas ","authors_text":"Charlie Conroy, David N. Spergel","cross_cats":["astro-ph.CO"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2010-05-26T20:03:03Z","title":"On the Formation of Multiple Stellar Populations in Globular Clusters"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1005.4934","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:cb0f40542f587dae51db507c086156765fb0bae3630b607f0f7a713baf186357","target":"record","created_at":"2026-05-18T02:07:07Z","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":"766cb456ecebc6012ffa56726a0e9c7fa2507ddc18a91f167a5a0a3082c9222c","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2010-05-26T20:03:03Z","title_canon_sha256":"5727980d87de365c80612496f4a2b79f759b257633c8a646dc7f157c7fb73f68"},"schema_version":"1.0","source":{"id":"1005.4934","kind":"arxiv","version":2}},"canonical_sha256":"69935559c81ace9274ca2e8d34088aab54ab70c089fba157d81f162210399a0c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"69935559c81ace9274ca2e8d34088aab54ab70c089fba157d81f162210399a0c","first_computed_at":"2026-05-18T02:07:07.642285Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:07:07.642285Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"EjiQrTYJZRHFj4wtqN98836JGEbPJzV66db2lbmEvEg7uvwt2yYvLl0YvNNL19VadcpKLh7GRJOcBNH9Q09YBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:07:07.642954Z","signed_message":"canonical_sha256_bytes"},"source_id":"1005.4934","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:cb0f40542f587dae51db507c086156765fb0bae3630b607f0f7a713baf186357","sha256:23a10e79dfcb816b4f1e4eb91d6c14c7121ada1de24ff958a63eeb652ae05074"],"state_sha256":"b7075070b0b062bf878712bd60e261f812c8e686d838fe6c30eecd7f4a2983dd"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Xq2Qiu+CYBCzjauVvnGxqK3/OXUW+c/6sby3L/droZDXWumGrZqRu4Win/CUgNDIn0xOHrmh1nam5P5fmAXQAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T22:02:01.864261Z","bundle_sha256":"bcdb2c6ef3179511b1fa2de9300f4f35a66deb5e8e4fa6383666e917a4eea50c"}}