{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2009:HUGPLP7EE4UYPXNUTQKH7IDEHM","short_pith_number":"pith:HUGPLP7E","schema_version":"1.0","canonical_sha256":"3d0cf5bfe4272987ddb49c147fa0643b15e1266fd283a330a9a4aefb6179f7eb","source":{"kind":"arxiv","id":"0908.3851","version":1},"attestation_state":"computed","paper":{"title":"Distribution and characteristics of Infrared Dark Clouds using genetic forward modelling","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"A.P. Jones, D.J. Marshall, G. Joncas","submitted_at":"2009-08-26T15:26:30Z","abstract_excerpt":"Infrared Dark Clouds (IRDCs) are dark clouds seen in silhouette in mid-infrared surveys. They are thought to be the birthplace of massive stars, yet remarkably little information exists on the properties of the population as a whole (e.g. mass spectrum, spatial distribution). Genetic forward modelling is used along with the Two Micron All Sky Survey and the Besancon Galactic model to deduce the three dimensional distribution of interstellar extinction towards previously identified IRDC candidates. This derived dust distribution can then be used to determine the distance and mass of IRDCs, inde"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"0908.3851","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2009-08-26T15:26:30Z","cross_cats_sorted":[],"title_canon_sha256":"24cb324698d1e104322fc441f84095a3233342f65ff2d185be39ac9f88539d59","abstract_canon_sha256":"f5b7b206a7759f16633267783e312a3d1cf3d60950cb8a3480d3da584e258876"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:12:22.631755Z","signature_b64":"l5ur6vj75+RiM6Vvx9x+bJh7tOUEgTsgjuCXYcazHtObdNIR154hzHbAxadRF/G4Ew7IK9XsNp2O/bMIjMTpDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3d0cf5bfe4272987ddb49c147fa0643b15e1266fd283a330a9a4aefb6179f7eb","last_reissued_at":"2026-05-18T02:12:22.631018Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:12:22.631018Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Distribution and characteristics of Infrared Dark Clouds using genetic forward modelling","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"A.P. Jones, D.J. Marshall, G. Joncas","submitted_at":"2009-08-26T15:26:30Z","abstract_excerpt":"Infrared Dark Clouds (IRDCs) are dark clouds seen in silhouette in mid-infrared surveys. They are thought to be the birthplace of massive stars, yet remarkably little information exists on the properties of the population as a whole (e.g. mass spectrum, spatial distribution). Genetic forward modelling is used along with the Two Micron All Sky Survey and the Besancon Galactic model to deduce the three dimensional distribution of interstellar extinction towards previously identified IRDC candidates. This derived dust distribution can then be used to determine the distance and mass of IRDCs, inde"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0908.3851","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"0908.3851","created_at":"2026-05-18T02:12:22.631144+00:00"},{"alias_kind":"arxiv_version","alias_value":"0908.3851v1","created_at":"2026-05-18T02:12:22.631144+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0908.3851","created_at":"2026-05-18T02:12:22.631144+00:00"},{"alias_kind":"pith_short_12","alias_value":"HUGPLP7EE4UY","created_at":"2026-05-18T12:25:59.703012+00:00"},{"alias_kind":"pith_short_16","alias_value":"HUGPLP7EE4UYPXNU","created_at":"2026-05-18T12:25:59.703012+00:00"},{"alias_kind":"pith_short_8","alias_value":"HUGPLP7E","created_at":"2026-05-18T12:25:59.703012+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/HUGPLP7EE4UYPXNUTQKH7IDEHM","json":"https://pith.science/pith/HUGPLP7EE4UYPXNUTQKH7IDEHM.json","graph_json":"https://pith.science/api/pith-number/HUGPLP7EE4UYPXNUTQKH7IDEHM/graph.json","events_json":"https://pith.science/api/pith-number/HUGPLP7EE4UYPXNUTQKH7IDEHM/events.json","paper":"https://pith.science/paper/HUGPLP7E"},"agent_actions":{"view_html":"https://pith.science/pith/HUGPLP7EE4UYPXNUTQKH7IDEHM","download_json":"https://pith.science/pith/HUGPLP7EE4UYPXNUTQKH7IDEHM.json","view_paper":"https://pith.science/paper/HUGPLP7E","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=0908.3851&json=true","fetch_graph":"https://pith.science/api/pith-number/HUGPLP7EE4UYPXNUTQKH7IDEHM/graph.json","fetch_events":"https://pith.science/api/pith-number/HUGPLP7EE4UYPXNUTQKH7IDEHM/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/HUGPLP7EE4UYPXNUTQKH7IDEHM/action/timestamp_anchor","attest_storage":"https://pith.science/pith/HUGPLP7EE4UYPXNUTQKH7IDEHM/action/storage_attestation","attest_author":"https://pith.science/pith/HUGPLP7EE4UYPXNUTQKH7IDEHM/action/author_attestation","sign_citation":"https://pith.science/pith/HUGPLP7EE4UYPXNUTQKH7IDEHM/action/citation_signature","submit_replication":"https://pith.science/pith/HUGPLP7EE4UYPXNUTQKH7IDEHM/action/replication_record"}},"created_at":"2026-05-18T02:12:22.631144+00:00","updated_at":"2026-05-18T02:12:22.631144+00:00"}