{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2016:ZZJS7EXLBCNEEGQDWB62WE3HWW","short_pith_number":"pith:ZZJS7EXL","schema_version":"1.0","canonical_sha256":"ce532f92eb089a421a03b07dab1367b587dfa42cfd13586b7fad17e9591eb1d7","source":{"kind":"arxiv","id":"1605.07938","version":2},"attestation_state":"computed","paper":{"title":"Determining the mid-plane conditions of circumstellar discs using gas and dust modelling: a study of HD 163296","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"Cathie J. Clarke, Dominika M. Boneberg, Michiel Min, Olja Pani\\'c, Thomas J. Haworth","submitted_at":"2016-05-25T15:41:31Z","abstract_excerpt":"The mass of gas in protoplanetary discs is a quantity of great interest for assessing their planet formation potential. Disc gas masses are, however, traditionally inferred from measured dust masses by applying an assumed standard gas-to-dust ratio of $g/d=100$. Furthermore, measuring gas masses based on CO observations has been hindered by the effects of CO freeze-out. Here we present a novel approach to study the mid-plane gas by combining C$^{18}$O line modelling, CO snowline observations and the spectral energy distribution (SED) and selectively study the inner tens of au where freeze-out "},"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":"1605.07938","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2016-05-25T15:41:31Z","cross_cats_sorted":[],"title_canon_sha256":"0786d718f379954410f02a1c4184d031195a2ad8890cda8ed6b4ea13e224bf40","abstract_canon_sha256":"e7967542f1036a8416cb1721ac6650f7e9307d52f061e6f0d0cb5d6eda9486f5"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:10:37.492213Z","signature_b64":"/XSDvqLd3m+wr2GFusDjf8EH+xMImeAFAPsvOrOevI7pmGMqC/qrrIaXTOXubaxJFxLVoYIM5GTK5YhItkg6Cg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ce532f92eb089a421a03b07dab1367b587dfa42cfd13586b7fad17e9591eb1d7","last_reissued_at":"2026-05-18T01:10:37.491665Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:10:37.491665Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Determining the mid-plane conditions of circumstellar discs using gas and dust modelling: a study of HD 163296","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"Cathie J. Clarke, Dominika M. Boneberg, Michiel Min, Olja Pani\\'c, Thomas J. Haworth","submitted_at":"2016-05-25T15:41:31Z","abstract_excerpt":"The mass of gas in protoplanetary discs is a quantity of great interest for assessing their planet formation potential. Disc gas masses are, however, traditionally inferred from measured dust masses by applying an assumed standard gas-to-dust ratio of $g/d=100$. Furthermore, measuring gas masses based on CO observations has been hindered by the effects of CO freeze-out. Here we present a novel approach to study the mid-plane gas by combining C$^{18}$O line modelling, CO snowline observations and the spectral energy distribution (SED) and selectively study the inner tens of au where freeze-out "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1605.07938","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1605.07938","created_at":"2026-05-18T01:10:37.491753+00:00"},{"alias_kind":"arxiv_version","alias_value":"1605.07938v2","created_at":"2026-05-18T01:10:37.491753+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1605.07938","created_at":"2026-05-18T01:10:37.491753+00:00"},{"alias_kind":"pith_short_12","alias_value":"ZZJS7EXLBCNE","created_at":"2026-05-18T12:30:55.937587+00:00"},{"alias_kind":"pith_short_16","alias_value":"ZZJS7EXLBCNEEGQD","created_at":"2026-05-18T12:30:55.937587+00:00"},{"alias_kind":"pith_short_8","alias_value":"ZZJS7EXL","created_at":"2026-05-18T12:30:55.937587+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/ZZJS7EXLBCNEEGQDWB62WE3HWW","json":"https://pith.science/pith/ZZJS7EXLBCNEEGQDWB62WE3HWW.json","graph_json":"https://pith.science/api/pith-number/ZZJS7EXLBCNEEGQDWB62WE3HWW/graph.json","events_json":"https://pith.science/api/pith-number/ZZJS7EXLBCNEEGQDWB62WE3HWW/events.json","paper":"https://pith.science/paper/ZZJS7EXL"},"agent_actions":{"view_html":"https://pith.science/pith/ZZJS7EXLBCNEEGQDWB62WE3HWW","download_json":"https://pith.science/pith/ZZJS7EXLBCNEEGQDWB62WE3HWW.json","view_paper":"https://pith.science/paper/ZZJS7EXL","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1605.07938&json=true","fetch_graph":"https://pith.science/api/pith-number/ZZJS7EXLBCNEEGQDWB62WE3HWW/graph.json","fetch_events":"https://pith.science/api/pith-number/ZZJS7EXLBCNEEGQDWB62WE3HWW/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/ZZJS7EXLBCNEEGQDWB62WE3HWW/action/timestamp_anchor","attest_storage":"https://pith.science/pith/ZZJS7EXLBCNEEGQDWB62WE3HWW/action/storage_attestation","attest_author":"https://pith.science/pith/ZZJS7EXLBCNEEGQDWB62WE3HWW/action/author_attestation","sign_citation":"https://pith.science/pith/ZZJS7EXLBCNEEGQDWB62WE3HWW/action/citation_signature","submit_replication":"https://pith.science/pith/ZZJS7EXLBCNEEGQDWB62WE3HWW/action/replication_record"}},"created_at":"2026-05-18T01:10:37.491753+00:00","updated_at":"2026-05-18T01:10:37.491753+00:00"}