{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:2LBBOYFWTCIZJPMZA5TUZA3THT","short_pith_number":"pith:2LBBOYFW","canonical_record":{"source":{"id":"1309.5100","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-09-19T20:54:50Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"f8ba63b43f1fdb81f9cf2c34cc1cd53489b2ff204713856967066a068890135d","abstract_canon_sha256":"d9071f9dc56da8d3c8d08cd372f06bede74c74f39f0f8bc7e977b326753e552b"},"schema_version":"1.0"},"canonical_sha256":"d2c21760b6989194bd9907674c83733cf4f3e2716e291c57279678574ed37e6a","source":{"kind":"arxiv","id":"1309.5100","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1309.5100","created_at":"2026-05-18T01:47:35Z"},{"alias_kind":"arxiv_version","alias_value":"1309.5100v1","created_at":"2026-05-18T01:47:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1309.5100","created_at":"2026-05-18T01:47:35Z"},{"alias_kind":"pith_short_12","alias_value":"2LBBOYFWTCIZ","created_at":"2026-05-18T12:27:30Z"},{"alias_kind":"pith_short_16","alias_value":"2LBBOYFWTCIZJPMZ","created_at":"2026-05-18T12:27:30Z"},{"alias_kind":"pith_short_8","alias_value":"2LBBOYFW","created_at":"2026-05-18T12:27:30Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:2LBBOYFWTCIZJPMZA5TUZA3THT","target":"record","payload":{"canonical_record":{"source":{"id":"1309.5100","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-09-19T20:54:50Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"f8ba63b43f1fdb81f9cf2c34cc1cd53489b2ff204713856967066a068890135d","abstract_canon_sha256":"d9071f9dc56da8d3c8d08cd372f06bede74c74f39f0f8bc7e977b326753e552b"},"schema_version":"1.0"},"canonical_sha256":"d2c21760b6989194bd9907674c83733cf4f3e2716e291c57279678574ed37e6a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:47:35.300953Z","signature_b64":"0+vrVeHrfEZOwJ3lNS6k/yU7RzFIKHwPEjApcvfYUlXQygrFSA69JK+PUFBRPf1Kh+x26TDTmYpjXZFGSk9sCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d2c21760b6989194bd9907674c83733cf4f3e2716e291c57279678574ed37e6a","last_reissued_at":"2026-05-18T01:47:35.300472Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:47:35.300472Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1309.5100","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:47:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7Pgx/fctEXCRzFMuaMhZOSI6qzyWIVqlI2AOdYNOp6+od0Yba90J4jFp8BvHoKK/K9sApJJJGzvPnTygO3UPAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-10T09:37:07.086660Z"},"content_sha256":"0c2d6b38d6615d0b5d7b526c5df21a04d889251de5b04c0089f6e34fac2f5060","schema_version":"1.0","event_id":"sha256:0c2d6b38d6615d0b5d7b526c5df21a04d889251de5b04c0089f6e34fac2f5060"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:2LBBOYFWTCIZJPMZA5TUZA3THT","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Star Formation Law in Molecule-Poor Galaxies","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.CO","authors_text":"Mark R. Krumholz","submitted_at":"2013-09-19T20:54:50Z","abstract_excerpt":"In this paper, I investigate the processes that regulate the rate of star formation in regions of galaxies where the neutral interstellar medium is predominantly composed of non-star-forming HI. In such regions, found today predominantly in low-metallicity dwarf galaxies and in the outer parts of large spirals, the star formation rate per unit area and per unit mass is much smaller than in more molecule-rich regions. While in molecule-rich regions the ultraviolet radiation field produced by efficient star formation forces the density of the cold neutral medium to a value set by two-phase equil"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1309.5100","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:47:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jzVOPAqdtLoVWfAvKchkjsAdI5PrqCLlWn61aIWT6leoco8COMlTEzE08r2OHohdy4DM8hIquhofg6EhKQo8Dw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-10T09:37:07.087424Z"},"content_sha256":"53a44269c468bf8184c6f45a1039dc2ef74c10736fc6d496f20f3a197b88c733","schema_version":"1.0","event_id":"sha256:53a44269c468bf8184c6f45a1039dc2ef74c10736fc6d496f20f3a197b88c733"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2LBBOYFWTCIZJPMZA5TUZA3THT/bundle.json","state_url":"https://pith.science/pith/2LBBOYFWTCIZJPMZA5TUZA3THT/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2LBBOYFWTCIZJPMZA5TUZA3THT/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-06-10T09:37:07Z","links":{"resolver":"https://pith.science/pith/2LBBOYFWTCIZJPMZA5TUZA3THT","bundle":"https://pith.science/pith/2LBBOYFWTCIZJPMZA5TUZA3THT/bundle.json","state":"https://pith.science/pith/2LBBOYFWTCIZJPMZA5TUZA3THT/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2LBBOYFWTCIZJPMZA5TUZA3THT/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:2LBBOYFWTCIZJPMZA5TUZA3THT","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":"d9071f9dc56da8d3c8d08cd372f06bede74c74f39f0f8bc7e977b326753e552b","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-09-19T20:54:50Z","title_canon_sha256":"f8ba63b43f1fdb81f9cf2c34cc1cd53489b2ff204713856967066a068890135d"},"schema_version":"1.0","source":{"id":"1309.5100","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1309.5100","created_at":"2026-05-18T01:47:35Z"},{"alias_kind":"arxiv_version","alias_value":"1309.5100v1","created_at":"2026-05-18T01:47:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1309.5100","created_at":"2026-05-18T01:47:35Z"},{"alias_kind":"pith_short_12","alias_value":"2LBBOYFWTCIZ","created_at":"2026-05-18T12:27:30Z"},{"alias_kind":"pith_short_16","alias_value":"2LBBOYFWTCIZJPMZ","created_at":"2026-05-18T12:27:30Z"},{"alias_kind":"pith_short_8","alias_value":"2LBBOYFW","created_at":"2026-05-18T12:27:30Z"}],"graph_snapshots":[{"event_id":"sha256:53a44269c468bf8184c6f45a1039dc2ef74c10736fc6d496f20f3a197b88c733","target":"graph","created_at":"2026-05-18T01:47:35Z","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":"In this paper, I investigate the processes that regulate the rate of star formation in regions of galaxies where the neutral interstellar medium is predominantly composed of non-star-forming HI. In such regions, found today predominantly in low-metallicity dwarf galaxies and in the outer parts of large spirals, the star formation rate per unit area and per unit mass is much smaller than in more molecule-rich regions. While in molecule-rich regions the ultraviolet radiation field produced by efficient star formation forces the density of the cold neutral medium to a value set by two-phase equil","authors_text":"Mark R. Krumholz","cross_cats":["astro-ph.GA"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-09-19T20:54:50Z","title":"The Star Formation Law in Molecule-Poor Galaxies"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1309.5100","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":"sha256:0c2d6b38d6615d0b5d7b526c5df21a04d889251de5b04c0089f6e34fac2f5060","target":"record","created_at":"2026-05-18T01:47:35Z","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":"d9071f9dc56da8d3c8d08cd372f06bede74c74f39f0f8bc7e977b326753e552b","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-09-19T20:54:50Z","title_canon_sha256":"f8ba63b43f1fdb81f9cf2c34cc1cd53489b2ff204713856967066a068890135d"},"schema_version":"1.0","source":{"id":"1309.5100","kind":"arxiv","version":1}},"canonical_sha256":"d2c21760b6989194bd9907674c83733cf4f3e2716e291c57279678574ed37e6a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d2c21760b6989194bd9907674c83733cf4f3e2716e291c57279678574ed37e6a","first_computed_at":"2026-05-18T01:47:35.300472Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:47:35.300472Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"0+vrVeHrfEZOwJ3lNS6k/yU7RzFIKHwPEjApcvfYUlXQygrFSA69JK+PUFBRPf1Kh+x26TDTmYpjXZFGSk9sCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:47:35.300953Z","signed_message":"canonical_sha256_bytes"},"source_id":"1309.5100","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0c2d6b38d6615d0b5d7b526c5df21a04d889251de5b04c0089f6e34fac2f5060","sha256:53a44269c468bf8184c6f45a1039dc2ef74c10736fc6d496f20f3a197b88c733"],"state_sha256":"79b1b08a8bfa3d21c43c96a96dff87db6734ac8b9416e09c734120bedad144bf"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7cmMygbULNotOY4E7UVD4mS3atcimoVY8qlsrp0Dg7GE2lLtEG1upF9VRi/ADg4MNPslFgnuHLGjptU82u7QCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-10T09:37:07.092012Z","bundle_sha256":"03c362c48a15ae9a74a56a1c54c8129afc2e918a8eaa4753eeff0fe9c9722834"}}