{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:H4JHEEZQAEIL7OPFG73B5QKDV6","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":"4378d81ea9007875fd816df672acff263ce543f99f50462e600d8927d4260aa5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-02-02T09:05:56Z","title_canon_sha256":"6475b65dffbbc550e4aa95b6535455b6a2c211888933e1d25d29bdd6d29d5133"},"schema_version":"1.0","source":{"id":"1502.00408","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1502.00408","created_at":"2026-05-18T01:41:05Z"},{"alias_kind":"arxiv_version","alias_value":"1502.00408v1","created_at":"2026-05-18T01:41:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1502.00408","created_at":"2026-05-18T01:41:05Z"},{"alias_kind":"pith_short_12","alias_value":"H4JHEEZQAEIL","created_at":"2026-05-18T12:29:22Z"},{"alias_kind":"pith_short_16","alias_value":"H4JHEEZQAEIL7OPF","created_at":"2026-05-18T12:29:22Z"},{"alias_kind":"pith_short_8","alias_value":"H4JHEEZQ","created_at":"2026-05-18T12:29:22Z"}],"graph_snapshots":[{"event_id":"sha256:e56dea0aec023384733911265601e9527d81e3feaf3f4cc78f7031d9bc1ce62d","target":"graph","created_at":"2026-05-18T01:41:05Z","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":"Double-barred galaxies account for almost one third of all barred galaxies, suggesting that secondary stellar bars, which are embedded in large-scale primary bars, are long-lived structures. However, up to now it has been hard to self-consistently simulate a disc galaxy that sustains two nested stellar bars for longer than a few rotation periods. N-body/hydrodynamical simulations including star formation recipes have been performed. Their properties have been compared with the most recent observational data in order to prove that they are representative of double-barred galaxies, even SB0. Ove","authors_text":"Herve Wozniak","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-02-02T09:05:56Z","title":"How can double-barred galaxies be long-lived?"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1502.00408","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":"sha256:5fb0d37c8bfa2f182565c4cb2b21df85b5d949459b6cc4ac13cd54e0dbd9f77e","target":"record","created_at":"2026-05-18T01:41:05Z","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":"4378d81ea9007875fd816df672acff263ce543f99f50462e600d8927d4260aa5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-02-02T09:05:56Z","title_canon_sha256":"6475b65dffbbc550e4aa95b6535455b6a2c211888933e1d25d29bdd6d29d5133"},"schema_version":"1.0","source":{"id":"1502.00408","kind":"arxiv","version":1}},"canonical_sha256":"3f127213300110bfb9e537f61ec143af885aded9870a22ca7b2ceef7cf2f22ff","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3f127213300110bfb9e537f61ec143af885aded9870a22ca7b2ceef7cf2f22ff","first_computed_at":"2026-05-18T01:41:05.446678Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:41:05.446678Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"hoW6+thWVZHdxwmoxbsO6ncN9oslKeqKb7l9QaavAuISubTtXKInJbdhwg8KaqPMyeNaTT3VdCfmHpoGnRbiBg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:41:05.447278Z","signed_message":"canonical_sha256_bytes"},"source_id":"1502.00408","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5fb0d37c8bfa2f182565c4cb2b21df85b5d949459b6cc4ac13cd54e0dbd9f77e","sha256:e56dea0aec023384733911265601e9527d81e3feaf3f4cc78f7031d9bc1ce62d"],"state_sha256":"63dacce6bb304140ad9c1df6ea712d9960037ed5c9683086315bdd64f3533bfb"}