{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:XYS4ZHYNEVEPU2L5MF2ADFZZQG","short_pith_number":"pith:XYS4ZHYN","canonical_record":{"source":{"id":"1209.0459","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2012-09-03T20:00:02Z","cross_cats_sorted":["astro-ph.CO","astro-ph.SR"],"title_canon_sha256":"2c6763a871471f98c3782c07c717b84c5f3b93f93eb344649290c5b9375fa79d","abstract_canon_sha256":"737fc0d1c38fae014b0d2973badcf07e22db1cd4453a0be749df0bea2f62f161"},"schema_version":"1.0"},"canonical_sha256":"be25cc9f0d2548fa697d617401973981a8e82b63b15be099e9961ace47665efc","source":{"kind":"arxiv","id":"1209.0459","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1209.0459","created_at":"2026-05-18T02:37:52Z"},{"alias_kind":"arxiv_version","alias_value":"1209.0459v2","created_at":"2026-05-18T02:37:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1209.0459","created_at":"2026-05-18T02:37:52Z"},{"alias_kind":"pith_short_12","alias_value":"XYS4ZHYNEVEP","created_at":"2026-05-18T12:27:27Z"},{"alias_kind":"pith_short_16","alias_value":"XYS4ZHYNEVEPU2L5","created_at":"2026-05-18T12:27:27Z"},{"alias_kind":"pith_short_8","alias_value":"XYS4ZHYN","created_at":"2026-05-18T12:27:27Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:XYS4ZHYNEVEPU2L5MF2ADFZZQG","target":"record","payload":{"canonical_record":{"source":{"id":"1209.0459","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2012-09-03T20:00:02Z","cross_cats_sorted":["astro-ph.CO","astro-ph.SR"],"title_canon_sha256":"2c6763a871471f98c3782c07c717b84c5f3b93f93eb344649290c5b9375fa79d","abstract_canon_sha256":"737fc0d1c38fae014b0d2973badcf07e22db1cd4453a0be749df0bea2f62f161"},"schema_version":"1.0"},"canonical_sha256":"be25cc9f0d2548fa697d617401973981a8e82b63b15be099e9961ace47665efc","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:37:52.275908Z","signature_b64":"H0ROzP7Ub9+/hI3zbyDGitqX28xFGqHZ36oaJN7gu6tMmpjET8gp+jLrwxzWxPaH6Dz1Wjl6a+ZQ6AIHNsShBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"be25cc9f0d2548fa697d617401973981a8e82b63b15be099e9961ace47665efc","last_reissued_at":"2026-05-18T02:37:52.275437Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:37:52.275437Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1209.0459","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:37:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TuTm3DKrudy1cWPQv9XdeF46UcudTDRE59gNgNg3vFZ+p6DD4Sz6HDBPx96KA5/UaS4EsG7SVkwFe3SFwBAQCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T09:25:11.950750Z"},"content_sha256":"0bf9f57dd3fa5d47e699ed89c56c6a74530e4a3daba6ea5556ec2f5b6e94123f","schema_version":"1.0","event_id":"sha256:0bf9f57dd3fa5d47e699ed89c56c6a74530e4a3daba6ea5556ec2f5b6e94123f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:XYS4ZHYNEVEPU2L5MF2ADFZZQG","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Dense Molecular Gas: A Sensitive Probe of Stellar Feedback Models","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO","astro-ph.SR"],"primary_cat":"astro-ph.GA","authors_text":"(2) Steward, (3) CITA), Desika Narayanan (2), Eliot Quataert (1) ((1) Berkeley, Norman Murray (3), Philip F. Hopkins (1)","submitted_at":"2012-09-03T20:00:02Z","abstract_excerpt":"We show that the mass fraction of GMC gas (n>100 cm^-3) in dense (n>>10^4 cm^-3) star-forming clumps, observable in dense molecular tracers (L_HCN/L_CO(1-0)), is a sensitive probe of the strength and mechanism(s) of stellar feedback. Using high-resolution galaxy-scale simulations with pc-scale resolution and explicit models for feedback from radiation pressure, photoionization heating, stellar winds, and supernovae (SNe), we make predictions for the dense molecular gas tracers as a function of GMC and galaxy properties and the efficiency of stellar feedback. In models with weak/no feedback, mu"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1209.0459","kind":"arxiv","version":2},"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":"2026-05-18T02:37:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5QVe1Zy/uEIFlW9F5bT7d5Q7FnMX8Nk7WJ7FUuZgCd5NIBUaE4DVI5/kXPWDbIxlxOhu9luoebl+6k4xlCMIAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T09:25:11.951472Z"},"content_sha256":"7ddd6d5d79858d19bdc5c55ea613382facb2c9c94017e0904d6c7794380f64b7","schema_version":"1.0","event_id":"sha256:7ddd6d5d79858d19bdc5c55ea613382facb2c9c94017e0904d6c7794380f64b7"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/XYS4ZHYNEVEPU2L5MF2ADFZZQG/bundle.json","state_url":"https://pith.science/pith/XYS4ZHYNEVEPU2L5MF2ADFZZQG/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/XYS4ZHYNEVEPU2L5MF2ADFZZQG/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":"2026-05-31T09:25:11Z","links":{"resolver":"https://pith.science/pith/XYS4ZHYNEVEPU2L5MF2ADFZZQG","bundle":"https://pith.science/pith/XYS4ZHYNEVEPU2L5MF2ADFZZQG/bundle.json","state":"https://pith.science/pith/XYS4ZHYNEVEPU2L5MF2ADFZZQG/state.json","well_known_bundle":"https://pith.science/.well-known/pith/XYS4ZHYNEVEPU2L5MF2ADFZZQG/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:XYS4ZHYNEVEPU2L5MF2ADFZZQG","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":"737fc0d1c38fae014b0d2973badcf07e22db1cd4453a0be749df0bea2f62f161","cross_cats_sorted":["astro-ph.CO","astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2012-09-03T20:00:02Z","title_canon_sha256":"2c6763a871471f98c3782c07c717b84c5f3b93f93eb344649290c5b9375fa79d"},"schema_version":"1.0","source":{"id":"1209.0459","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1209.0459","created_at":"2026-05-18T02:37:52Z"},{"alias_kind":"arxiv_version","alias_value":"1209.0459v2","created_at":"2026-05-18T02:37:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1209.0459","created_at":"2026-05-18T02:37:52Z"},{"alias_kind":"pith_short_12","alias_value":"XYS4ZHYNEVEP","created_at":"2026-05-18T12:27:27Z"},{"alias_kind":"pith_short_16","alias_value":"XYS4ZHYNEVEPU2L5","created_at":"2026-05-18T12:27:27Z"},{"alias_kind":"pith_short_8","alias_value":"XYS4ZHYN","created_at":"2026-05-18T12:27:27Z"}],"graph_snapshots":[{"event_id":"sha256:7ddd6d5d79858d19bdc5c55ea613382facb2c9c94017e0904d6c7794380f64b7","target":"graph","created_at":"2026-05-18T02:37:52Z","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 show that the mass fraction of GMC gas (n>100 cm^-3) in dense (n>>10^4 cm^-3) star-forming clumps, observable in dense molecular tracers (L_HCN/L_CO(1-0)), is a sensitive probe of the strength and mechanism(s) of stellar feedback. Using high-resolution galaxy-scale simulations with pc-scale resolution and explicit models for feedback from radiation pressure, photoionization heating, stellar winds, and supernovae (SNe), we make predictions for the dense molecular gas tracers as a function of GMC and galaxy properties and the efficiency of stellar feedback. In models with weak/no feedback, mu","authors_text":"(2) Steward, (3) CITA), Desika Narayanan (2), Eliot Quataert (1) ((1) Berkeley, Norman Murray (3), Philip F. Hopkins (1)","cross_cats":["astro-ph.CO","astro-ph.SR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2012-09-03T20:00:02Z","title":"Dense Molecular Gas: A Sensitive Probe of Stellar Feedback Models"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1209.0459","kind":"arxiv","version":2},"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":"sha256:0bf9f57dd3fa5d47e699ed89c56c6a74530e4a3daba6ea5556ec2f5b6e94123f","target":"record","created_at":"2026-05-18T02:37:52Z","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":"737fc0d1c38fae014b0d2973badcf07e22db1cd4453a0be749df0bea2f62f161","cross_cats_sorted":["astro-ph.CO","astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2012-09-03T20:00:02Z","title_canon_sha256":"2c6763a871471f98c3782c07c717b84c5f3b93f93eb344649290c5b9375fa79d"},"schema_version":"1.0","source":{"id":"1209.0459","kind":"arxiv","version":2}},"canonical_sha256":"be25cc9f0d2548fa697d617401973981a8e82b63b15be099e9961ace47665efc","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"be25cc9f0d2548fa697d617401973981a8e82b63b15be099e9961ace47665efc","first_computed_at":"2026-05-18T02:37:52.275437Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:37:52.275437Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"H0ROzP7Ub9+/hI3zbyDGitqX28xFGqHZ36oaJN7gu6tMmpjET8gp+jLrwxzWxPaH6Dz1Wjl6a+ZQ6AIHNsShBw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:37:52.275908Z","signed_message":"canonical_sha256_bytes"},"source_id":"1209.0459","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0bf9f57dd3fa5d47e699ed89c56c6a74530e4a3daba6ea5556ec2f5b6e94123f","sha256:7ddd6d5d79858d19bdc5c55ea613382facb2c9c94017e0904d6c7794380f64b7"],"state_sha256":"25736f1caad4cfa9028a854514d4fc6b0f9e5de62b1ea3f1d9b7ea0550166db0"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"EeTx7T6DtoDh33e3I6XGPS/rVa95tclCETTRTMdzzGGvAZXsGd8t3NJctU+pKAEFxUOkzImIVwdSQ20l0+ygAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T09:25:11.955192Z","bundle_sha256":"d74322ed5cef6ac0458fa503c400821fd17d09ccf41cdefb587202d8f5d62ad5"}}