{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:V5PSCAJIWOSXJCLU7DEOBJQDHF","short_pith_number":"pith:V5PSCAJI","canonical_record":{"source":{"id":"1509.03518","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-09-11T14:01:15Z","cross_cats_sorted":[],"title_canon_sha256":"7cfb1a1ea54e59852fcd0963f033f959147c190baf337f37583ce3969e5dfad7","abstract_canon_sha256":"2166c65bf9b49c647eff54909e02db12884419ce37d7b1c0597c1f1f5767f230"},"schema_version":"1.0"},"canonical_sha256":"af5f210128b3a5748974f8c8e0a603394cee5e7a940b117cddaed1273feba4a5","source":{"kind":"arxiv","id":"1509.03518","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1509.03518","created_at":"2026-05-18T01:28:03Z"},{"alias_kind":"arxiv_version","alias_value":"1509.03518v1","created_at":"2026-05-18T01:28:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1509.03518","created_at":"2026-05-18T01:28:03Z"},{"alias_kind":"pith_short_12","alias_value":"V5PSCAJIWOSX","created_at":"2026-05-18T12:29:44Z"},{"alias_kind":"pith_short_16","alias_value":"V5PSCAJIWOSXJCLU","created_at":"2026-05-18T12:29:44Z"},{"alias_kind":"pith_short_8","alias_value":"V5PSCAJI","created_at":"2026-05-18T12:29:44Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:V5PSCAJIWOSXJCLU7DEOBJQDHF","target":"record","payload":{"canonical_record":{"source":{"id":"1509.03518","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-09-11T14:01:15Z","cross_cats_sorted":[],"title_canon_sha256":"7cfb1a1ea54e59852fcd0963f033f959147c190baf337f37583ce3969e5dfad7","abstract_canon_sha256":"2166c65bf9b49c647eff54909e02db12884419ce37d7b1c0597c1f1f5767f230"},"schema_version":"1.0"},"canonical_sha256":"af5f210128b3a5748974f8c8e0a603394cee5e7a940b117cddaed1273feba4a5","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:28:03.060781Z","signature_b64":"Hq4l2OfDBNnXAhK33Y1Nf6GBA8k2eg3z2cJ3p/btvk9yswVjpTsdSsWLAEDiTcd/zg6FezruukaU9J08H5ZpDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"af5f210128b3a5748974f8c8e0a603394cee5e7a940b117cddaed1273feba4a5","last_reissued_at":"2026-05-18T01:28:03.060129Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:28:03.060129Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1509.03518","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:28:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"dl7JuDtcTgt+hGrrJIEd93/jW6FMU5K7c+hsCL0to2VPTrhLxT7VGms0mVZ4Tk1ZugrFrFG1Ah351uz6S8ftDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-22T08:06:21.473452Z"},"content_sha256":"30be4ef117d4668652ea6300bcfb2ea3ec73c78274b79bca72c377b620343cb3","schema_version":"1.0","event_id":"sha256:30be4ef117d4668652ea6300bcfb2ea3ec73c78274b79bca72c377b620343cb3"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:V5PSCAJIWOSXJCLU7DEOBJQDHF","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Post-AGB stars in the Magellanic Clouds and neutron-capture processes in AGB stars","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"A. I. Karakas, F. K\\\"appeler, H. Van Winckel, K. De Smedt, M. Lugaro, S. W. Campbell","submitted_at":"2015-09-11T14:01:15Z","abstract_excerpt":"We explore modifications to the current scenario for the slow neutron capture process in asymptotic giant branch (AGB) stars to account for the Pb deficiency observed in post-AGB stars of low metallicity ([Fe/H] ~ -1.2) and low initial mass (~ 1 - 1.5 Msun) in the Large and Small Magellanic Clouds. We calculated the stellar evolution and nucleosynthesis for a 1.3 Msun star with [Fe/H]=-1.3 and tested different amounts and distributions of protons leading to the production of the main neutron source within the 13C-pocket and proton ingestion scenarios. No s-process models can fully reproduce th"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1509.03518","kind":"arxiv","version":1},"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":"2026-05-18T01:28:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"SowFGTPd37+ONtJO+uGQYFsZ4/ZdGEwXW0EGX4WvkfWZhdiW/hCZihsCP2IcofFVMx3WS2Ou8xJtvDK7PrIgCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-22T08:06:21.474060Z"},"content_sha256":"00b3a0ac62d38f75aa371aecbfae8130c87f504597671abf5b4d0a33893e8591","schema_version":"1.0","event_id":"sha256:00b3a0ac62d38f75aa371aecbfae8130c87f504597671abf5b4d0a33893e8591"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/V5PSCAJIWOSXJCLU7DEOBJQDHF/bundle.json","state_url":"https://pith.science/pith/V5PSCAJIWOSXJCLU7DEOBJQDHF/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/V5PSCAJIWOSXJCLU7DEOBJQDHF/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":"2026-05-22T08:06:21Z","links":{"resolver":"https://pith.science/pith/V5PSCAJIWOSXJCLU7DEOBJQDHF","bundle":"https://pith.science/pith/V5PSCAJIWOSXJCLU7DEOBJQDHF/bundle.json","state":"https://pith.science/pith/V5PSCAJIWOSXJCLU7DEOBJQDHF/state.json","well_known_bundle":"https://pith.science/.well-known/pith/V5PSCAJIWOSXJCLU7DEOBJQDHF/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:V5PSCAJIWOSXJCLU7DEOBJQDHF","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":"2166c65bf9b49c647eff54909e02db12884419ce37d7b1c0597c1f1f5767f230","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-09-11T14:01:15Z","title_canon_sha256":"7cfb1a1ea54e59852fcd0963f033f959147c190baf337f37583ce3969e5dfad7"},"schema_version":"1.0","source":{"id":"1509.03518","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1509.03518","created_at":"2026-05-18T01:28:03Z"},{"alias_kind":"arxiv_version","alias_value":"1509.03518v1","created_at":"2026-05-18T01:28:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1509.03518","created_at":"2026-05-18T01:28:03Z"},{"alias_kind":"pith_short_12","alias_value":"V5PSCAJIWOSX","created_at":"2026-05-18T12:29:44Z"},{"alias_kind":"pith_short_16","alias_value":"V5PSCAJIWOSXJCLU","created_at":"2026-05-18T12:29:44Z"},{"alias_kind":"pith_short_8","alias_value":"V5PSCAJI","created_at":"2026-05-18T12:29:44Z"}],"graph_snapshots":[{"event_id":"sha256:00b3a0ac62d38f75aa371aecbfae8130c87f504597671abf5b4d0a33893e8591","target":"graph","created_at":"2026-05-18T01:28:03Z","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 explore modifications to the current scenario for the slow neutron capture process in asymptotic giant branch (AGB) stars to account for the Pb deficiency observed in post-AGB stars of low metallicity ([Fe/H] ~ -1.2) and low initial mass (~ 1 - 1.5 Msun) in the Large and Small Magellanic Clouds. We calculated the stellar evolution and nucleosynthesis for a 1.3 Msun star with [Fe/H]=-1.3 and tested different amounts and distributions of protons leading to the production of the main neutron source within the 13C-pocket and proton ingestion scenarios. No s-process models can fully reproduce th","authors_text":"A. I. Karakas, F. K\\\"appeler, H. Van Winckel, K. De Smedt, M. Lugaro, S. W. Campbell","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-09-11T14:01:15Z","title":"Post-AGB stars in the Magellanic Clouds and neutron-capture processes in AGB stars"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1509.03518","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":"sha256:30be4ef117d4668652ea6300bcfb2ea3ec73c78274b79bca72c377b620343cb3","target":"record","created_at":"2026-05-18T01:28:03Z","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":"2166c65bf9b49c647eff54909e02db12884419ce37d7b1c0597c1f1f5767f230","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-09-11T14:01:15Z","title_canon_sha256":"7cfb1a1ea54e59852fcd0963f033f959147c190baf337f37583ce3969e5dfad7"},"schema_version":"1.0","source":{"id":"1509.03518","kind":"arxiv","version":1}},"canonical_sha256":"af5f210128b3a5748974f8c8e0a603394cee5e7a940b117cddaed1273feba4a5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"af5f210128b3a5748974f8c8e0a603394cee5e7a940b117cddaed1273feba4a5","first_computed_at":"2026-05-18T01:28:03.060129Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:28:03.060129Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Hq4l2OfDBNnXAhK33Y1Nf6GBA8k2eg3z2cJ3p/btvk9yswVjpTsdSsWLAEDiTcd/zg6FezruukaU9J08H5ZpDw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:28:03.060781Z","signed_message":"canonical_sha256_bytes"},"source_id":"1509.03518","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:30be4ef117d4668652ea6300bcfb2ea3ec73c78274b79bca72c377b620343cb3","sha256:00b3a0ac62d38f75aa371aecbfae8130c87f504597671abf5b4d0a33893e8591"],"state_sha256":"69e19878085428c519c68741282664be4bfefafce4495afff443abf3f06f4deb"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Cs86rfh3UdynVj1mAO4wjRmdi9j8RhH6cF1FHVCsONWTjT6/jzRx8PjGn61ySo+nnNaNiZkp5yYD+bfmhLkuDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-22T08:06:21.477502Z","bundle_sha256":"5778bc4171ebbded34cdbf113b244625a4cfd10b32e32d932e070273273093b9"}}