{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:Q6LDLNVRQ3U4NX3QGIIMSN6XSH","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":"39a66261eb7609312b620550a7a2eab6c0a661a25dad71f64ff3d9e2cf5a5359","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2009-09-30T10:21:06Z","title_canon_sha256":"f66bd4ce4cb97b837c737877701b4450a80f3f9e24aa7df5d493b8ff8ae379d5"},"schema_version":"1.0","source":{"id":"0909.5552","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0909.5552","created_at":"2026-05-18T02:11:36Z"},{"alias_kind":"arxiv_version","alias_value":"0909.5552v1","created_at":"2026-05-18T02:11:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0909.5552","created_at":"2026-05-18T02:11:36Z"},{"alias_kind":"pith_short_12","alias_value":"Q6LDLNVRQ3U4","created_at":"2026-05-18T12:26:01Z"},{"alias_kind":"pith_short_16","alias_value":"Q6LDLNVRQ3U4NX3Q","created_at":"2026-05-18T12:26:01Z"},{"alias_kind":"pith_short_8","alias_value":"Q6LDLNVR","created_at":"2026-05-18T12:26:01Z"}],"graph_snapshots":[{"event_id":"sha256:405d49376f00e0bbc1e59adba905193cc5388808fa51ec45b6dccbc863419c32","target":"graph","created_at":"2026-05-18T02:11:36Z","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":"The peculiar three-peak structure of the linear polarization profile shown in the second solar spectrum by the Ba II line at 4554 A has been interpreted as the result of the different contributions coming from the barium isotopes with and without hyperfine structure (HFS). In the same spectrum, a triple peak polarization signal is also observed in the Sc II line at 4247 A. Scandium has a single stable isotope (^{45}Sc), which shows HFS due to a nuclear spin I=7/2. We investigate the possibility of interpreting the linear polarization profile shown in the second solar spectrum by this Sc II lin","authors_text":"Luca Belluzzi","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2009-09-30T10:21:06Z","title":"On the physical origin of the second solar spectrum of the Sc II line at 4247 A"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0909.5552","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:ad8bb64d32d33689af976271de9591ed25fd5d43dd094b9829e642e5891a34f4","target":"record","created_at":"2026-05-18T02:11:36Z","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":"39a66261eb7609312b620550a7a2eab6c0a661a25dad71f64ff3d9e2cf5a5359","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2009-09-30T10:21:06Z","title_canon_sha256":"f66bd4ce4cb97b837c737877701b4450a80f3f9e24aa7df5d493b8ff8ae379d5"},"schema_version":"1.0","source":{"id":"0909.5552","kind":"arxiv","version":1}},"canonical_sha256":"879635b6b186e9c6df703210c937d791d3fad9399cefbae1169f76c442dfe370","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"879635b6b186e9c6df703210c937d791d3fad9399cefbae1169f76c442dfe370","first_computed_at":"2026-05-18T02:11:36.042987Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:11:36.042987Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"o3yUMD29/OoVTPLYfgjcsFa8J0aL5H/Ry8EGEjq+6h6TjgYpI/nqDn+tKKNrJNWKy3nDr1BH5FhZfG6Sffi3Bg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:11:36.043776Z","signed_message":"canonical_sha256_bytes"},"source_id":"0909.5552","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ad8bb64d32d33689af976271de9591ed25fd5d43dd094b9829e642e5891a34f4","sha256:405d49376f00e0bbc1e59adba905193cc5388808fa51ec45b6dccbc863419c32"],"state_sha256":"b915561ae321d03e03f915f28a89825edb909b449a4ec2b8356d3ac4f6b9826e"}