{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2011:BIAOE2RV4BPRTGNWORZQIGC7DY","short_pith_number":"pith:BIAOE2RV","schema_version":"1.0","canonical_sha256":"0a00e26a35e05f1999b6747304185f1e07640b67d62a118d968df532f376d12b","source":{"kind":"arxiv","id":"1110.4172","version":1},"attestation_state":"computed","paper":{"title":"Spitzer Evidence for a Late Heavy Bombardment and the Formation of Urelites in {\\eta} Corvi at ~1 Gyr","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mtrl-sci","physics.space-ph"],"primary_cat":"astro-ph.SR","authors_text":"A. Morlok, C. H. Chen, C. M. Lisse, D. M. Watson, M. C. Wyatt, M. L. Sitko, P. Manoj, P. Sheehan, P. Thebault, T. M. Currie","submitted_at":"2011-10-19T03:41:32Z","abstract_excerpt":"We have analyzed Spitzer and NASA/IRTF 2 - 35 \\mum spectra of the warm, ~350 K circumstellar dust around the nearby MS star {\\eta} Corvi (F2V, 1.4 \\pm 0.3 Gyr). The spectra show clear evidence for warm, water- and carbon-rich dust at ~3 AU from the central star, in the system's Terrestrial Habitability Zone. Spectral features due to ultra-primitive cometary material were found, in addition to features due to impact produced silica and high temperature carbonaceous phases. At least 9 x 10^18 kg of 0.1 - 100 \\mum warm dust is present in a collisional equilibrium distribution with dn/da ~ a^-3.5,"},"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":"1110.4172","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2011-10-19T03:41:32Z","cross_cats_sorted":["cond-mat.mtrl-sci","physics.space-ph"],"title_canon_sha256":"280a6e4252dc0a03c60897fe058dc0922f1bf66cb972fff0932b3eece74a880b","abstract_canon_sha256":"e658b81d2497cef8a7b08a0ebb366c473fc99d5778259a5f0a4eaffa9ddbecaf"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:00:08.872006Z","signature_b64":"KN6XmtcvK1CsEwtQ04t2rI9NXWzKDL4msnPdWHP6KKzVI4hbornKNvkuwIS4wvIPzCOrhOsR5M7c+00JzwRUAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0a00e26a35e05f1999b6747304185f1e07640b67d62a118d968df532f376d12b","last_reissued_at":"2026-05-18T02:00:08.871417Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:00:08.871417Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Spitzer Evidence for a Late Heavy Bombardment and the Formation of Urelites in {\\eta} Corvi at ~1 Gyr","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mtrl-sci","physics.space-ph"],"primary_cat":"astro-ph.SR","authors_text":"A. Morlok, C. H. Chen, C. M. Lisse, D. M. Watson, M. C. Wyatt, M. L. Sitko, P. Manoj, P. Sheehan, P. Thebault, T. M. Currie","submitted_at":"2011-10-19T03:41:32Z","abstract_excerpt":"We have analyzed Spitzer and NASA/IRTF 2 - 35 \\mum spectra of the warm, ~350 K circumstellar dust around the nearby MS star {\\eta} Corvi (F2V, 1.4 \\pm 0.3 Gyr). The spectra show clear evidence for warm, water- and carbon-rich dust at ~3 AU from the central star, in the system's Terrestrial Habitability Zone. Spectral features due to ultra-primitive cometary material were found, in addition to features due to impact produced silica and high temperature carbonaceous phases. At least 9 x 10^18 kg of 0.1 - 100 \\mum warm dust is present in a collisional equilibrium distribution with dn/da ~ a^-3.5,"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1110.4172","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":"1110.4172","created_at":"2026-05-18T02:00:08.871536+00:00"},{"alias_kind":"arxiv_version","alias_value":"1110.4172v1","created_at":"2026-05-18T02:00:08.871536+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1110.4172","created_at":"2026-05-18T02:00:08.871536+00:00"},{"alias_kind":"pith_short_12","alias_value":"BIAOE2RV4BPR","created_at":"2026-05-18T12:26:24.575870+00:00"},{"alias_kind":"pith_short_16","alias_value":"BIAOE2RV4BPRTGNW","created_at":"2026-05-18T12:26:24.575870+00:00"},{"alias_kind":"pith_short_8","alias_value":"BIAOE2RV","created_at":"2026-05-18T12:26:24.575870+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/BIAOE2RV4BPRTGNWORZQIGC7DY","json":"https://pith.science/pith/BIAOE2RV4BPRTGNWORZQIGC7DY.json","graph_json":"https://pith.science/api/pith-number/BIAOE2RV4BPRTGNWORZQIGC7DY/graph.json","events_json":"https://pith.science/api/pith-number/BIAOE2RV4BPRTGNWORZQIGC7DY/events.json","paper":"https://pith.science/paper/BIAOE2RV"},"agent_actions":{"view_html":"https://pith.science/pith/BIAOE2RV4BPRTGNWORZQIGC7DY","download_json":"https://pith.science/pith/BIAOE2RV4BPRTGNWORZQIGC7DY.json","view_paper":"https://pith.science/paper/BIAOE2RV","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1110.4172&json=true","fetch_graph":"https://pith.science/api/pith-number/BIAOE2RV4BPRTGNWORZQIGC7DY/graph.json","fetch_events":"https://pith.science/api/pith-number/BIAOE2RV4BPRTGNWORZQIGC7DY/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/BIAOE2RV4BPRTGNWORZQIGC7DY/action/timestamp_anchor","attest_storage":"https://pith.science/pith/BIAOE2RV4BPRTGNWORZQIGC7DY/action/storage_attestation","attest_author":"https://pith.science/pith/BIAOE2RV4BPRTGNWORZQIGC7DY/action/author_attestation","sign_citation":"https://pith.science/pith/BIAOE2RV4BPRTGNWORZQIGC7DY/action/citation_signature","submit_replication":"https://pith.science/pith/BIAOE2RV4BPRTGNWORZQIGC7DY/action/replication_record"}},"created_at":"2026-05-18T02:00:08.871536+00:00","updated_at":"2026-05-18T02:00:08.871536+00:00"}