{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:1998:4HG6EO4C2DEXX6BGA6R2YDXDY3","short_pith_number":"pith:4HG6EO4C","schema_version":"1.0","canonical_sha256":"e1cde23b82d0c97bf82607a3ac0ee3c6f21b8f8bc835ff442502e02390b58bef","source":{"kind":"arxiv","id":"astro-ph/9809027","version":1},"attestation_state":"computed","paper":{"title":"Correlation Between Gas and Dust in Molecular Clouds: L977","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"C. Lada, E. Lada, J. Alves","submitted_at":"1998-09-03T05:52:28Z","abstract_excerpt":"We report observations of the J =(1--0) C18O molecular emission line toward the L977 molecular cloud. To study the correlation between C18O emission and dust extinction we constructed a Gaussian smoothed map of the infrared extinction measured by Alves et al. (1998) at the same angular resolution (50'') as our molecular--line observations. This enabled a direct comparison of C18O integrated intensities and column densities with dust extinction over a relatively large range of cloud depth (2 < Av < 30 mag) at 240 positions inside L977. We find a good linear correlation between these two column "},"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":"astro-ph/9809027","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"1998-09-03T05:52:28Z","cross_cats_sorted":[],"title_canon_sha256":"2fbbbca751be0d85518da6f7ca5ec56b3357212f693174855dd16e0089ed9606","abstract_canon_sha256":"67b86c84481f3166def1c0fcdda864dcb40f18e34b81e5fe9c8acfd3ddf3579a"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T16:06:59.453880Z","signature_b64":"Mr8kdW2BdUCjoDwlEAGIvAii6ylOwVDPEfDwGdYvIGsuv826lHlyfqk6aKGbw7KSo2hldacGWY0HjtjK/BWVCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e1cde23b82d0c97bf82607a3ac0ee3c6f21b8f8bc835ff442502e02390b58bef","last_reissued_at":"2026-07-04T16:06:59.453472Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T16:06:59.453472Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Correlation Between Gas and Dust in Molecular Clouds: L977","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"C. Lada, E. Lada, J. Alves","submitted_at":"1998-09-03T05:52:28Z","abstract_excerpt":"We report observations of the J =(1--0) C18O molecular emission line toward the L977 molecular cloud. To study the correlation between C18O emission and dust extinction we constructed a Gaussian smoothed map of the infrared extinction measured by Alves et al. (1998) at the same angular resolution (50'') as our molecular--line observations. This enabled a direct comparison of C18O integrated intensities and column densities with dust extinction over a relatively large range of cloud depth (2 < Av < 30 mag) at 240 positions inside L977. We find a good linear correlation between these two column "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9809027","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/astro-ph/9809027/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"astro-ph/9809027","created_at":"2026-07-04T16:06:59.453533+00:00"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/9809027v1","created_at":"2026-07-04T16:06:59.453533+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/9809027","created_at":"2026-07-04T16:06:59.453533+00:00"},{"alias_kind":"pith_short_12","alias_value":"4HG6EO4C2DEX","created_at":"2026-07-04T16:06:59.453533+00:00"},{"alias_kind":"pith_short_16","alias_value":"4HG6EO4C2DEXX6BG","created_at":"2026-07-04T16:06:59.453533+00:00"},{"alias_kind":"pith_short_8","alias_value":"4HG6EO4C","created_at":"2026-07-04T16:06:59.453533+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/4HG6EO4C2DEXX6BGA6R2YDXDY3","json":"https://pith.science/pith/4HG6EO4C2DEXX6BGA6R2YDXDY3.json","graph_json":"https://pith.science/api/pith-number/4HG6EO4C2DEXX6BGA6R2YDXDY3/graph.json","events_json":"https://pith.science/api/pith-number/4HG6EO4C2DEXX6BGA6R2YDXDY3/events.json","paper":"https://pith.science/paper/4HG6EO4C"},"agent_actions":{"view_html":"https://pith.science/pith/4HG6EO4C2DEXX6BGA6R2YDXDY3","download_json":"https://pith.science/pith/4HG6EO4C2DEXX6BGA6R2YDXDY3.json","view_paper":"https://pith.science/paper/4HG6EO4C","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=astro-ph/9809027&json=true","fetch_graph":"https://pith.science/api/pith-number/4HG6EO4C2DEXX6BGA6R2YDXDY3/graph.json","fetch_events":"https://pith.science/api/pith-number/4HG6EO4C2DEXX6BGA6R2YDXDY3/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/4HG6EO4C2DEXX6BGA6R2YDXDY3/action/timestamp_anchor","attest_storage":"https://pith.science/pith/4HG6EO4C2DEXX6BGA6R2YDXDY3/action/storage_attestation","attest_author":"https://pith.science/pith/4HG6EO4C2DEXX6BGA6R2YDXDY3/action/author_attestation","sign_citation":"https://pith.science/pith/4HG6EO4C2DEXX6BGA6R2YDXDY3/action/citation_signature","submit_replication":"https://pith.science/pith/4HG6EO4C2DEXX6BGA6R2YDXDY3/action/replication_record"}},"created_at":"2026-07-04T16:06:59.453533+00:00","updated_at":"2026-07-04T16:06:59.453533+00:00"}