{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2007:UI5FJ6JER56UXNSJEOB3ANA6JH","short_pith_number":"pith:UI5FJ6JE","schema_version":"1.0","canonical_sha256":"a23a54f9248f7d4bb6492383b0341e49e76d05ab5770a26fc47bb7263d0274b7","source":{"kind":"arxiv","id":"0707.4314","version":1},"attestation_state":"computed","paper":{"title":"Spitzer/IRS spectroscopy of high mass precursors to planetary nebulae","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"D. A. Garcia-Hernandez, J. V. Perea-Calderon, M. Bobrowsky, P.Garcia-Lario","submitted_at":"2007-07-29T21:13:19Z","abstract_excerpt":"We present Spitzer/IRS observations of a small sample of heavily obscured IRAS sources displaying both the infrared and OH maser emission characteristic of OH/IR stars on the asymptotic giant branch (AGB), but also radio continuum emission typical of ionized planetary nebulae (PNe), the so-called OHPNe. Our observations show that their mid-infrared spectra are dominated by the simultaneous presence of strong and broad amorphous silicate absorption features together with crystalline silicate features, originated in their O-rich circumstellar shells. Out of the five sources observed, three of th"},"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":"0707.4314","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2007-07-29T21:13:19Z","cross_cats_sorted":[],"title_canon_sha256":"db8cd74bb2c623d77bb556dbc9f9021b238de703f31ed987f009868a8ee5218e","abstract_canon_sha256":"aacb04385544ab00014038744b1a64b8a184a74c85832fec2a73d24e7da251da"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:49:10.680398Z","signature_b64":"RAXKmsVL9dMp3oDnAc/5X1pZIY2DDGTnZs4lbbnfTx0pzhIL/xZftQAPoAwFjAFKoET2+FuDtYmPgZ5zwfs5Cw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a23a54f9248f7d4bb6492383b0341e49e76d05ab5770a26fc47bb7263d0274b7","last_reissued_at":"2026-05-18T03:49:10.679835Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:49:10.679835Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Spitzer/IRS spectroscopy of high mass precursors to planetary nebulae","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"D. A. Garcia-Hernandez, J. V. Perea-Calderon, M. Bobrowsky, P.Garcia-Lario","submitted_at":"2007-07-29T21:13:19Z","abstract_excerpt":"We present Spitzer/IRS observations of a small sample of heavily obscured IRAS sources displaying both the infrared and OH maser emission characteristic of OH/IR stars on the asymptotic giant branch (AGB), but also radio continuum emission typical of ionized planetary nebulae (PNe), the so-called OHPNe. Our observations show that their mid-infrared spectra are dominated by the simultaneous presence of strong and broad amorphous silicate absorption features together with crystalline silicate features, originated in their O-rich circumstellar shells. Out of the five sources observed, three of th"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0707.4314","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":"0707.4314","created_at":"2026-05-18T03:49:10.679906+00:00"},{"alias_kind":"arxiv_version","alias_value":"0707.4314v1","created_at":"2026-05-18T03:49:10.679906+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0707.4314","created_at":"2026-05-18T03:49:10.679906+00:00"},{"alias_kind":"pith_short_12","alias_value":"UI5FJ6JER56U","created_at":"2026-05-18T12:25:56.245647+00:00"},{"alias_kind":"pith_short_16","alias_value":"UI5FJ6JER56UXNSJ","created_at":"2026-05-18T12:25:56.245647+00:00"},{"alias_kind":"pith_short_8","alias_value":"UI5FJ6JE","created_at":"2026-05-18T12:25:56.245647+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/UI5FJ6JER56UXNSJEOB3ANA6JH","json":"https://pith.science/pith/UI5FJ6JER56UXNSJEOB3ANA6JH.json","graph_json":"https://pith.science/api/pith-number/UI5FJ6JER56UXNSJEOB3ANA6JH/graph.json","events_json":"https://pith.science/api/pith-number/UI5FJ6JER56UXNSJEOB3ANA6JH/events.json","paper":"https://pith.science/paper/UI5FJ6JE"},"agent_actions":{"view_html":"https://pith.science/pith/UI5FJ6JER56UXNSJEOB3ANA6JH","download_json":"https://pith.science/pith/UI5FJ6JER56UXNSJEOB3ANA6JH.json","view_paper":"https://pith.science/paper/UI5FJ6JE","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=0707.4314&json=true","fetch_graph":"https://pith.science/api/pith-number/UI5FJ6JER56UXNSJEOB3ANA6JH/graph.json","fetch_events":"https://pith.science/api/pith-number/UI5FJ6JER56UXNSJEOB3ANA6JH/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/UI5FJ6JER56UXNSJEOB3ANA6JH/action/timestamp_anchor","attest_storage":"https://pith.science/pith/UI5FJ6JER56UXNSJEOB3ANA6JH/action/storage_attestation","attest_author":"https://pith.science/pith/UI5FJ6JER56UXNSJEOB3ANA6JH/action/author_attestation","sign_citation":"https://pith.science/pith/UI5FJ6JER56UXNSJEOB3ANA6JH/action/citation_signature","submit_replication":"https://pith.science/pith/UI5FJ6JER56UXNSJEOB3ANA6JH/action/replication_record"}},"created_at":"2026-05-18T03:49:10.679906+00:00","updated_at":"2026-05-18T03:49:10.679906+00:00"}