{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2017:CXSELZ2D327YJ4LG64QSDZFTJ4","short_pith_number":"pith:CXSELZ2D","schema_version":"1.0","canonical_sha256":"15e445e743debf84f166f72121e4b34f343b21b6daf7551797aa52ca76c1d32a","source":{"kind":"arxiv","id":"1711.05736","version":1},"attestation_state":"computed","paper":{"title":"The ALMA-PILS survey: Formaldehyde deuteration in warm gas on small scales toward IRAS 16293-2422 B","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.GA","authors_text":"A. Coutens, E. F. van Dishoeck, H. Calcutt, H. S. P. M\\\"uller, J. K. J{\\o}rgensen, M. H. D. van der Wiel, M. V. Persson, S. Wampfler, T. L. Bourke, V. Taquet","submitted_at":"2017-11-15T13:24:17Z","abstract_excerpt":"[abridged] The enhanced degrees of deuterium fractionation observed in envelopes around protostars demonstrate the importance of chemistry at low temperatures, relevant in pre- and protostellar cores. formaldehyde is an important species in the formation of methanol and more complex molecules. Here, we present the first study of formaldehyde deuteration on small scales around the prototypical low-mass protostar IRAS 16293-2422 using high spatial and spectral resolution Atacama Large Millimeter/submillimeter Array (ALMA) observations. Numerous isotopologues of formaldehyde are detected, among t"},"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":"1711.05736","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-11-15T13:24:17Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"6145d88a9e383e646d1b0f50438a88359cf68faa41ae8a52c645e351be6215f4","abstract_canon_sha256":"c90544c9fb8c752e0055991d08f1d45eb8ba5a0e18aec3057ff19f6e550c04ac"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:22:27.404158Z","signature_b64":"19CFVolAbzuFjRJX75nsky9XBiv5Kd21kzRz3am9tCIk1qfrAM4FE9L+kE02FyHNTjG3Xc5jU2kgp8QaT0goBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"15e445e743debf84f166f72121e4b34f343b21b6daf7551797aa52ca76c1d32a","last_reissued_at":"2026-05-18T00:22:27.403482Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:22:27.403482Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"The ALMA-PILS survey: Formaldehyde deuteration in warm gas on small scales toward IRAS 16293-2422 B","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.GA","authors_text":"A. Coutens, E. F. van Dishoeck, H. Calcutt, H. S. P. M\\\"uller, J. K. J{\\o}rgensen, M. H. D. van der Wiel, M. V. Persson, S. Wampfler, T. L. Bourke, V. Taquet","submitted_at":"2017-11-15T13:24:17Z","abstract_excerpt":"[abridged] The enhanced degrees of deuterium fractionation observed in envelopes around protostars demonstrate the importance of chemistry at low temperatures, relevant in pre- and protostellar cores. formaldehyde is an important species in the formation of methanol and more complex molecules. Here, we present the first study of formaldehyde deuteration on small scales around the prototypical low-mass protostar IRAS 16293-2422 using high spatial and spectral resolution Atacama Large Millimeter/submillimeter Array (ALMA) observations. Numerous isotopologues of formaldehyde are detected, among t"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1711.05736","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":"1711.05736","created_at":"2026-05-18T00:22:27.403575+00:00"},{"alias_kind":"arxiv_version","alias_value":"1711.05736v1","created_at":"2026-05-18T00:22:27.403575+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1711.05736","created_at":"2026-05-18T00:22:27.403575+00:00"},{"alias_kind":"pith_short_12","alias_value":"CXSELZ2D327Y","created_at":"2026-05-18T12:31:10.602751+00:00"},{"alias_kind":"pith_short_16","alias_value":"CXSELZ2D327YJ4LG","created_at":"2026-05-18T12:31:10.602751+00:00"},{"alias_kind":"pith_short_8","alias_value":"CXSELZ2D","created_at":"2026-05-18T12:31:10.602751+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/CXSELZ2D327YJ4LG64QSDZFTJ4","json":"https://pith.science/pith/CXSELZ2D327YJ4LG64QSDZFTJ4.json","graph_json":"https://pith.science/api/pith-number/CXSELZ2D327YJ4LG64QSDZFTJ4/graph.json","events_json":"https://pith.science/api/pith-number/CXSELZ2D327YJ4LG64QSDZFTJ4/events.json","paper":"https://pith.science/paper/CXSELZ2D"},"agent_actions":{"view_html":"https://pith.science/pith/CXSELZ2D327YJ4LG64QSDZFTJ4","download_json":"https://pith.science/pith/CXSELZ2D327YJ4LG64QSDZFTJ4.json","view_paper":"https://pith.science/paper/CXSELZ2D","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1711.05736&json=true","fetch_graph":"https://pith.science/api/pith-number/CXSELZ2D327YJ4LG64QSDZFTJ4/graph.json","fetch_events":"https://pith.science/api/pith-number/CXSELZ2D327YJ4LG64QSDZFTJ4/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/CXSELZ2D327YJ4LG64QSDZFTJ4/action/timestamp_anchor","attest_storage":"https://pith.science/pith/CXSELZ2D327YJ4LG64QSDZFTJ4/action/storage_attestation","attest_author":"https://pith.science/pith/CXSELZ2D327YJ4LG64QSDZFTJ4/action/author_attestation","sign_citation":"https://pith.science/pith/CXSELZ2D327YJ4LG64QSDZFTJ4/action/citation_signature","submit_replication":"https://pith.science/pith/CXSELZ2D327YJ4LG64QSDZFTJ4/action/replication_record"}},"created_at":"2026-05-18T00:22:27.403575+00:00","updated_at":"2026-05-18T00:22:27.403575+00:00"}