{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2007:I5PBYSUY3NXKVUHLKE2DEQPCLA","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":"b77836d9d3ae87edd430a4875b42c3f2d7a89cec0254fce689cd796773700e39","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2007-02-21T19:16:52Z","title_canon_sha256":"9f6e9e2b04c2d9dc74c8a16546084994dca67387f58f4ce4171dcb3b28adf9e3"},"schema_version":"1.0","source":{"id":"astro-ph/0702550","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0702550","created_at":"2026-05-18T04:29:06Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0702550v1","created_at":"2026-05-18T04:29:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0702550","created_at":"2026-05-18T04:29:06Z"},{"alias_kind":"pith_short_12","alias_value":"I5PBYSUY3NXK","created_at":"2026-05-18T12:25:55Z"},{"alias_kind":"pith_short_16","alias_value":"I5PBYSUY3NXKVUHL","created_at":"2026-05-18T12:25:55Z"},{"alias_kind":"pith_short_8","alias_value":"I5PBYSUY","created_at":"2026-05-18T12:25:55Z"}],"graph_snapshots":[{"event_id":"sha256:8a58cfd2244fd3a8abc4a3a1bec44222983a02297642645e804cd742a1748470","target":"graph","created_at":"2026-05-18T04:29:06Z","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 correlations between visual extinction and polarization along the western side of the IRAS Vela Shell using a published polarimetric catalog of several hundreds of objects. Our extinction maps along this ionization front (I-front) find evidence of clumpy structure with typical masses between 1.5 and 6 solar masses and a mean length scale L ~ 0.47pc. The polarimetric data allowed us to investigate the distribution of the local magnetic field in small (~pc) scales across the I-front. Using the dispersion of polarization position angles, we find variations in the kinetic-to-magnetic en","authors_text":"A. M. Magalh\\~aes (1) ((1) Departamento de Astronomia, A. Pereyra (1), Brazil), IAG, S\\~ao Paulo, Universidade de S\\~ao Paulo","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2007-02-21T19:16:52Z","title":"Polarimetry toward the IRAS Vela Shell. II. Extinction and Magnetic Fields"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0702550","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:b83a42175d4c55909e91bf4ab44784219c81eedd01d6b81e1bfec5e001698891","target":"record","created_at":"2026-05-18T04:29:06Z","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":"b77836d9d3ae87edd430a4875b42c3f2d7a89cec0254fce689cd796773700e39","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2007-02-21T19:16:52Z","title_canon_sha256":"9f6e9e2b04c2d9dc74c8a16546084994dca67387f58f4ce4171dcb3b28adf9e3"},"schema_version":"1.0","source":{"id":"astro-ph/0702550","kind":"arxiv","version":1}},"canonical_sha256":"475e1c4a98db6eaad0eb51343241e2582b8049296597308ac0261cc788944eff","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"475e1c4a98db6eaad0eb51343241e2582b8049296597308ac0261cc788944eff","first_computed_at":"2026-05-18T04:29:06.334325Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:29:06.334325Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"iYjjU8RlLf4ATDXADjHtIE5sgvqFTiE2WkIoeHPvTHsy4gX8/3MG8PdU/ZxHgW88/RaepyLmSDaiF/GvhxoeBg==","signature_status":"signed_v1","signed_at":"2026-05-18T04:29:06.335103Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0702550","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b83a42175d4c55909e91bf4ab44784219c81eedd01d6b81e1bfec5e001698891","sha256:8a58cfd2244fd3a8abc4a3a1bec44222983a02297642645e804cd742a1748470"],"state_sha256":"18739c8971746ff982d9cc7bcb05276d6dda2cba9c3ac29f3f19f57aa3e8437e"}