{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2015:SSUX3RMSAEHSO6FZ4663EI3QQJ","short_pith_number":"pith:SSUX3RMS","schema_version":"1.0","canonical_sha256":"94a97dc592010f2778b9e7bdb22370824835fe6bd602e7fc34c3d221fced4758","source":{"kind":"arxiv","id":"1501.02810","version":1},"attestation_state":"computed","paper":{"title":"The Composition of Interstellar Grains Toward Zeta Ophiuchi: Constraining the Elemental Budget Near the Diffuse-Dense Cloud Transition","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Bruce T. Draine, Charles A. Poteet, Douglas C. B. Whittet","submitted_at":"2015-01-12T21:00:15Z","abstract_excerpt":"We investigate the composition of interstellar grains along the line of sight toward Zeta Ophiuchi, a well-studied environment near the diffuse-dense cloud transition. A spectral decomposition analysis of the solid-state absorbers is performed using archival spectroscopic observations from the Spitzer Space Telescope and Infrared Space Observatory. We find strong evidence for the presence of sub-micron-sized amorphous silicate grains, principally comprised of olivine-like composition, with no convincing evidence of H2O ice mantles. However, tentative evidence for thick H2O ice mantles on large"},"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":"1501.02810","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-01-12T21:00:15Z","cross_cats_sorted":[],"title_canon_sha256":"4f449db566891bdfb0e7a6ed1e5f448f4210d106c7310008e1b254f179fd83eb","abstract_canon_sha256":"55f7fc10b2f9281ec71802073b58a45f118eeff8c7248585b21dfc28fbf0562f"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:41:11.473932Z","signature_b64":"OywG95XZGk3N4HGy5F+C8s1tH18EME4vrh5C9Z0AjM39uzYX5VRBY3EhaRW+yieNTrzXtg8P+hHLBJW9lTcmAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"94a97dc592010f2778b9e7bdb22370824835fe6bd602e7fc34c3d221fced4758","last_reissued_at":"2026-05-18T01:41:11.473234Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:41:11.473234Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"The Composition of Interstellar Grains Toward Zeta Ophiuchi: Constraining the Elemental Budget Near the Diffuse-Dense Cloud Transition","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Bruce T. Draine, Charles A. Poteet, Douglas C. B. Whittet","submitted_at":"2015-01-12T21:00:15Z","abstract_excerpt":"We investigate the composition of interstellar grains along the line of sight toward Zeta Ophiuchi, a well-studied environment near the diffuse-dense cloud transition. A spectral decomposition analysis of the solid-state absorbers is performed using archival spectroscopic observations from the Spitzer Space Telescope and Infrared Space Observatory. We find strong evidence for the presence of sub-micron-sized amorphous silicate grains, principally comprised of olivine-like composition, with no convincing evidence of H2O ice mantles. However, tentative evidence for thick H2O ice mantles on large"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1501.02810","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":"1501.02810","created_at":"2026-05-18T01:41:11.473356+00:00"},{"alias_kind":"arxiv_version","alias_value":"1501.02810v1","created_at":"2026-05-18T01:41:11.473356+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1501.02810","created_at":"2026-05-18T01:41:11.473356+00:00"},{"alias_kind":"pith_short_12","alias_value":"SSUX3RMSAEHS","created_at":"2026-05-18T12:29:42.218222+00:00"},{"alias_kind":"pith_short_16","alias_value":"SSUX3RMSAEHSO6FZ","created_at":"2026-05-18T12:29:42.218222+00:00"},{"alias_kind":"pith_short_8","alias_value":"SSUX3RMS","created_at":"2026-05-18T12:29:42.218222+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/SSUX3RMSAEHSO6FZ4663EI3QQJ","json":"https://pith.science/pith/SSUX3RMSAEHSO6FZ4663EI3QQJ.json","graph_json":"https://pith.science/api/pith-number/SSUX3RMSAEHSO6FZ4663EI3QQJ/graph.json","events_json":"https://pith.science/api/pith-number/SSUX3RMSAEHSO6FZ4663EI3QQJ/events.json","paper":"https://pith.science/paper/SSUX3RMS"},"agent_actions":{"view_html":"https://pith.science/pith/SSUX3RMSAEHSO6FZ4663EI3QQJ","download_json":"https://pith.science/pith/SSUX3RMSAEHSO6FZ4663EI3QQJ.json","view_paper":"https://pith.science/paper/SSUX3RMS","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1501.02810&json=true","fetch_graph":"https://pith.science/api/pith-number/SSUX3RMSAEHSO6FZ4663EI3QQJ/graph.json","fetch_events":"https://pith.science/api/pith-number/SSUX3RMSAEHSO6FZ4663EI3QQJ/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/SSUX3RMSAEHSO6FZ4663EI3QQJ/action/timestamp_anchor","attest_storage":"https://pith.science/pith/SSUX3RMSAEHSO6FZ4663EI3QQJ/action/storage_attestation","attest_author":"https://pith.science/pith/SSUX3RMSAEHSO6FZ4663EI3QQJ/action/author_attestation","sign_citation":"https://pith.science/pith/SSUX3RMSAEHSO6FZ4663EI3QQJ/action/citation_signature","submit_replication":"https://pith.science/pith/SSUX3RMSAEHSO6FZ4663EI3QQJ/action/replication_record"}},"created_at":"2026-05-18T01:41:11.473356+00:00","updated_at":"2026-05-18T01:41:11.473356+00:00"}