{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2024:GC2DNN5CEHSZM6X6J5SXE2CXTH","short_pith_number":"pith:GC2DNN5C","schema_version":"1.0","canonical_sha256":"30b436b7a221e5967afe4f6572685799c9f06de33de76a679a452a49085ed4ed","source":{"kind":"arxiv","id":"2407.14711","version":1},"attestation_state":"computed","paper":{"title":"SO2 and OCS toward high-mass protostars: A comparative study between ice and gas","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Aida Ahmadi, Ewine F. van Dishoeck, Julia C. Santos, Martijn L. van Gelder, Pooneh Nazari","submitted_at":"2024-07-20T00:13:59Z","abstract_excerpt":"We investigate the chemical history of interstellar OCS and SO2 by deriving a statistically-significant sample of gas-phase column densities towards massive protostars and comparing to observations of gas and ices towards other sources spanning from dark clouds to comets. We analyze a subset of 26 line-rich massive protostars observed by ALMA as part of the ALMAGAL survey. Column densities are derived for OCS and SO2 from their rare isotopologues O13CS and 34SO2 towards the compact gas around the hot core. We find that gas-phase column density ratios of OCS and SO2 with respect to methanol rem"},"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":"2407.14711","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2024-07-20T00:13:59Z","cross_cats_sorted":[],"title_canon_sha256":"480f0e0f11d2e7cff7b0e17e4cf62d681035a6ac77d765753e1955031030ee71","abstract_canon_sha256":"ec5f8899a38cf7307a48f536cd95efe669c8f8ed39f37f7adb8bc09729ea1786"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T09:11:16.413845Z","signature_b64":"VKYFouT5h3F1mZM8Uj6GUiV8IrhP7/+YLe2QdYFJwgEffxX2XW41SF0DymIBgLeTD1urkzTtDgV8BLp9mBapCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"30b436b7a221e5967afe4f6572685799c9f06de33de76a679a452a49085ed4ed","last_reissued_at":"2026-07-05T09:11:16.413360Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T09:11:16.413360Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"SO2 and OCS toward high-mass protostars: A comparative study between ice and gas","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Aida Ahmadi, Ewine F. van Dishoeck, Julia C. Santos, Martijn L. van Gelder, Pooneh Nazari","submitted_at":"2024-07-20T00:13:59Z","abstract_excerpt":"We investigate the chemical history of interstellar OCS and SO2 by deriving a statistically-significant sample of gas-phase column densities towards massive protostars and comparing to observations of gas and ices towards other sources spanning from dark clouds to comets. We analyze a subset of 26 line-rich massive protostars observed by ALMA as part of the ALMAGAL survey. Column densities are derived for OCS and SO2 from their rare isotopologues O13CS and 34SO2 towards the compact gas around the hot core. We find that gas-phase column density ratios of OCS and SO2 with respect to methanol rem"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2407.14711","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/2407.14711/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":"2407.14711","created_at":"2026-07-05T09:11:16.413431+00:00"},{"alias_kind":"arxiv_version","alias_value":"2407.14711v1","created_at":"2026-07-05T09:11:16.413431+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2407.14711","created_at":"2026-07-05T09:11:16.413431+00:00"},{"alias_kind":"pith_short_12","alias_value":"GC2DNN5CEHSZ","created_at":"2026-07-05T09:11:16.413431+00:00"},{"alias_kind":"pith_short_16","alias_value":"GC2DNN5CEHSZM6X6","created_at":"2026-07-05T09:11:16.413431+00:00"},{"alias_kind":"pith_short_8","alias_value":"GC2DNN5C","created_at":"2026-07-05T09:11:16.413431+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/GC2DNN5CEHSZM6X6J5SXE2CXTH","json":"https://pith.science/pith/GC2DNN5CEHSZM6X6J5SXE2CXTH.json","graph_json":"https://pith.science/api/pith-number/GC2DNN5CEHSZM6X6J5SXE2CXTH/graph.json","events_json":"https://pith.science/api/pith-number/GC2DNN5CEHSZM6X6J5SXE2CXTH/events.json","paper":"https://pith.science/paper/GC2DNN5C"},"agent_actions":{"view_html":"https://pith.science/pith/GC2DNN5CEHSZM6X6J5SXE2CXTH","download_json":"https://pith.science/pith/GC2DNN5CEHSZM6X6J5SXE2CXTH.json","view_paper":"https://pith.science/paper/GC2DNN5C","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2407.14711&json=true","fetch_graph":"https://pith.science/api/pith-number/GC2DNN5CEHSZM6X6J5SXE2CXTH/graph.json","fetch_events":"https://pith.science/api/pith-number/GC2DNN5CEHSZM6X6J5SXE2CXTH/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/GC2DNN5CEHSZM6X6J5SXE2CXTH/action/timestamp_anchor","attest_storage":"https://pith.science/pith/GC2DNN5CEHSZM6X6J5SXE2CXTH/action/storage_attestation","attest_author":"https://pith.science/pith/GC2DNN5CEHSZM6X6J5SXE2CXTH/action/author_attestation","sign_citation":"https://pith.science/pith/GC2DNN5CEHSZM6X6J5SXE2CXTH/action/citation_signature","submit_replication":"https://pith.science/pith/GC2DNN5CEHSZM6X6J5SXE2CXTH/action/replication_record"}},"created_at":"2026-07-05T09:11:16.413431+00:00","updated_at":"2026-07-05T09:11:16.413431+00:00"}