{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:I7ZNIYOCULCN4CR2TCAEIQTDTI","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":"efaeebfb6e8a622bfc220fd1a40c7a63410ebfc70cc5358c1028cd5cc7c0adaa","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-11-28T21:10:16Z","title_canon_sha256":"f719a444a9971ee9426edc36283f7ac41a249e8413a66cc2d0d0eabeb109a4c3"},"schema_version":"1.0","source":{"id":"1211.6754","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1211.6754","created_at":"2026-05-18T01:52:53Z"},{"alias_kind":"arxiv_version","alias_value":"1211.6754v1","created_at":"2026-05-18T01:52:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1211.6754","created_at":"2026-05-18T01:52:53Z"},{"alias_kind":"pith_short_12","alias_value":"I7ZNIYOCULCN","created_at":"2026-05-18T12:27:09Z"},{"alias_kind":"pith_short_16","alias_value":"I7ZNIYOCULCN4CR2","created_at":"2026-05-18T12:27:09Z"},{"alias_kind":"pith_short_8","alias_value":"I7ZNIYOC","created_at":"2026-05-18T12:27:09Z"}],"graph_snapshots":[{"event_id":"sha256:b7299fe209742a65b32869b2ad4ae4dd76f5470197d3649a7959498c5f947bb5","target":"graph","created_at":"2026-05-18T01:52:53Z","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 follow the formation and evolution of bars in N-body simulations of disc galaxies with gas and/or a triaxial halo. We find that both the relative gas fraction and the halo shape play a major role in the formation and evolution of the bar. In gas-rich simulations, the disc stays near-axisymmetric much longer than in gas-poor ones, and, when the bar starts growing, it does so at a much slower rate. Due to these two effects combined, large-scale bars form much later in gas-rich than in gas-poor discs. This can explain the observation that bars are in place earlier in massive red disc galaxies ","authors_text":"E. Athanassoula, R.E.G. Machado, S.A. Rodionov","cross_cats":["astro-ph.GA"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-11-28T21:10:16Z","title":"Bar formation and evolution in disc galaxies with gas and a triaxial halo: Morphology, bar strength and halo properties"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1211.6754","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":"sha256:2a6c2e710db5cf59c28af800db82bc9c8ac63bb86369d2e2e962bf996e79b7bd","target":"record","created_at":"2026-05-18T01:52:53Z","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":"efaeebfb6e8a622bfc220fd1a40c7a63410ebfc70cc5358c1028cd5cc7c0adaa","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-11-28T21:10:16Z","title_canon_sha256":"f719a444a9971ee9426edc36283f7ac41a249e8413a66cc2d0d0eabeb109a4c3"},"schema_version":"1.0","source":{"id":"1211.6754","kind":"arxiv","version":1}},"canonical_sha256":"47f2d461c2a2c4de0a3a98804442639a1330d932d99414b89432bc42933955a9","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"47f2d461c2a2c4de0a3a98804442639a1330d932d99414b89432bc42933955a9","first_computed_at":"2026-05-18T01:52:53.564894Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:52:53.564894Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"gEoxeBcCp33JSXC7T45Pwhox01or1RWmxWKVhSPnHzPfCZ6klQvvPmlTS7IKPoZW1YL/cS7uH75w4UOcDLjlBg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:52:53.565311Z","signed_message":"canonical_sha256_bytes"},"source_id":"1211.6754","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2a6c2e710db5cf59c28af800db82bc9c8ac63bb86369d2e2e962bf996e79b7bd","sha256:b7299fe209742a65b32869b2ad4ae4dd76f5470197d3649a7959498c5f947bb5"],"state_sha256":"d8b38813494eaefd4b8f212b8b952cf183095b65bb6c83796ed6a756a547c7d8"}