{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:KEIQSELEXZ5IRCEBM6EYYUQGWF","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":"338b17061e45189680d21a86f8de55e4716f3a0e66c0838d5fd45d16303c638e","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-05-18T15:58:11Z","title_canon_sha256":"7a3a32255b6e9205c3f4ff3a5fd54992151d2c2f9ba95e2252180e3cb77206ba"},"schema_version":"1.0","source":{"id":"1505.04696","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1505.04696","created_at":"2026-05-18T01:36:12Z"},{"alias_kind":"arxiv_version","alias_value":"1505.04696v1","created_at":"2026-05-18T01:36:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1505.04696","created_at":"2026-05-18T01:36:12Z"},{"alias_kind":"pith_short_12","alias_value":"KEIQSELEXZ5I","created_at":"2026-05-18T12:29:27Z"},{"alias_kind":"pith_short_16","alias_value":"KEIQSELEXZ5IRCEB","created_at":"2026-05-18T12:29:27Z"},{"alias_kind":"pith_short_8","alias_value":"KEIQSELE","created_at":"2026-05-18T12:29:27Z"}],"graph_snapshots":[{"event_id":"sha256:fa1887802ef94c4157d1d2aa53aa6f4f2f1da0fcb57e0f72367825f6caa78f6f","target":"graph","created_at":"2026-05-18T01:36:12Z","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 describe an overall picture of galactic-scale star formation. Recent high-resolution magneto-hydrodynamical simulations of two-fluid dynamics with cooling/heating and thermal conduction have shown that the formation of molecular clouds requires multiple episodes of supersonic compression. This finding enables us to create a scenario in which molecular clouds form in interacting shells or bubbles on a galactic scale. First we estimate the ensemble-averaged growth rate of molecular clouds over a timescale larger than a million years. Next we perform radiation hydrodynamics simulations to eval","authors_text":"Kazunari Iwasaki, Shu-ichiro Inutsuka, Takashi Hosokawa, Tsuyoshi Inoue","cross_cats":["astro-ph.SR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-05-18T15:58:11Z","title":"The Formation and Destruction of Molecular Clouds and Galactic Star Formation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1505.04696","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":"sha256:744f1040abbd6b235167e0189b338eea0edd82b17a3d12c90ab6912077ff0c2c","target":"record","created_at":"2026-05-18T01:36:12Z","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":"338b17061e45189680d21a86f8de55e4716f3a0e66c0838d5fd45d16303c638e","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-05-18T15:58:11Z","title_canon_sha256":"7a3a32255b6e9205c3f4ff3a5fd54992151d2c2f9ba95e2252180e3cb77206ba"},"schema_version":"1.0","source":{"id":"1505.04696","kind":"arxiv","version":1}},"canonical_sha256":"5111091164be7a88888167898c5206b16aec49ab29f0239877689f152e673406","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5111091164be7a88888167898c5206b16aec49ab29f0239877689f152e673406","first_computed_at":"2026-05-18T01:36:12.923702Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:36:12.923702Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"jiXSk18CUV76+C96CSP8+PwCbqAHa49WylF7a9St1/YpBHGTlQ8eNE/ztHqt0n3YkdU6JkVw4gIuSjWUz0MYAw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:36:12.924244Z","signed_message":"canonical_sha256_bytes"},"source_id":"1505.04696","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:744f1040abbd6b235167e0189b338eea0edd82b17a3d12c90ab6912077ff0c2c","sha256:fa1887802ef94c4157d1d2aa53aa6f4f2f1da0fcb57e0f72367825f6caa78f6f"],"state_sha256":"d3e31bf1bd49fd02774ef145844b923c6064635bfcfdd7e7ace452ce40ca9fa0"}