{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2007:NWIPGWLIB2HBNCOMBSBNS7XNHH","short_pith_number":"pith:NWIPGWLI","schema_version":"1.0","canonical_sha256":"6d90f359680e8e1689cc0c82d97eed39e21030177e563ea79f61d9a3a6b5b97d","source":{"kind":"arxiv","id":"astro-ph/0701431","version":1},"attestation_state":"computed","paper":{"title":"Far Infrared Spitzer Observations of Elliptical Galaxies: Evidence for Extended Diffuse Dust","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Fabrizio Brighenti, Pasquale Temi, William G. Mathews","submitted_at":"2007-01-15T21:01:14Z","abstract_excerpt":"Far-infrared Spitzer observations of elliptical galaxies are inconsistent with simple steady state models of dust creation in red giant stars and destruction by grain sputtering in the hot interstellar gas at T ~ 10^7 K. The flux at 24 microns correlates with optical fluxes, suggesting that this relatively hot dust is largely circumstellar. But fluxes at 70 and 160 microns do not correlate with optical fluxes. Elliptical galaxies with similar L_B have luminosities at 70 and 160 microns (L_70 and L_160) that vary over a factor ~ 100, implying an additional source of dust unrelated to that produ"},"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":"astro-ph/0701431","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2007-01-15T21:01:14Z","cross_cats_sorted":[],"title_canon_sha256":"20ce47c4838d9bbd23c63ac56965c22412f322cea67fbc0b9e446be664539480","abstract_canon_sha256":"11883b013bece2b46b6d08ec37aa44d7d087a9854aa4e97388470a68ea78f749"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:29:07.246027Z","signature_b64":"4BbJ9E42nnou6nKhTdmOf7qoEZVK41g34WFMY7HIU5dCKeKVUWS7mWc5aH/Pxvkf+5WBuAPxr6AderrarQ9RBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6d90f359680e8e1689cc0c82d97eed39e21030177e563ea79f61d9a3a6b5b97d","last_reissued_at":"2026-05-18T04:29:07.245405Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:29:07.245405Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Far Infrared Spitzer Observations of Elliptical Galaxies: Evidence for Extended Diffuse Dust","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Fabrizio Brighenti, Pasquale Temi, William G. Mathews","submitted_at":"2007-01-15T21:01:14Z","abstract_excerpt":"Far-infrared Spitzer observations of elliptical galaxies are inconsistent with simple steady state models of dust creation in red giant stars and destruction by grain sputtering in the hot interstellar gas at T ~ 10^7 K. The flux at 24 microns correlates with optical fluxes, suggesting that this relatively hot dust is largely circumstellar. But fluxes at 70 and 160 microns do not correlate with optical fluxes. Elliptical galaxies with similar L_B have luminosities at 70 and 160 microns (L_70 and L_160) that vary over a factor ~ 100, implying an additional source of dust unrelated to that produ"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0701431","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":"astro-ph/0701431","created_at":"2026-05-18T04:29:07.245490+00:00"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0701431v1","created_at":"2026-05-18T04:29:07.245490+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0701431","created_at":"2026-05-18T04:29:07.245490+00:00"},{"alias_kind":"pith_short_12","alias_value":"NWIPGWLIB2HB","created_at":"2026-05-18T12:25:55.427421+00:00"},{"alias_kind":"pith_short_16","alias_value":"NWIPGWLIB2HBNCOM","created_at":"2026-05-18T12:25:55.427421+00:00"},{"alias_kind":"pith_short_8","alias_value":"NWIPGWLI","created_at":"2026-05-18T12:25:55.427421+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/NWIPGWLIB2HBNCOMBSBNS7XNHH","json":"https://pith.science/pith/NWIPGWLIB2HBNCOMBSBNS7XNHH.json","graph_json":"https://pith.science/api/pith-number/NWIPGWLIB2HBNCOMBSBNS7XNHH/graph.json","events_json":"https://pith.science/api/pith-number/NWIPGWLIB2HBNCOMBSBNS7XNHH/events.json","paper":"https://pith.science/paper/NWIPGWLI"},"agent_actions":{"view_html":"https://pith.science/pith/NWIPGWLIB2HBNCOMBSBNS7XNHH","download_json":"https://pith.science/pith/NWIPGWLIB2HBNCOMBSBNS7XNHH.json","view_paper":"https://pith.science/paper/NWIPGWLI","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=astro-ph/0701431&json=true","fetch_graph":"https://pith.science/api/pith-number/NWIPGWLIB2HBNCOMBSBNS7XNHH/graph.json","fetch_events":"https://pith.science/api/pith-number/NWIPGWLIB2HBNCOMBSBNS7XNHH/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/NWIPGWLIB2HBNCOMBSBNS7XNHH/action/timestamp_anchor","attest_storage":"https://pith.science/pith/NWIPGWLIB2HBNCOMBSBNS7XNHH/action/storage_attestation","attest_author":"https://pith.science/pith/NWIPGWLIB2HBNCOMBSBNS7XNHH/action/author_attestation","sign_citation":"https://pith.science/pith/NWIPGWLIB2HBNCOMBSBNS7XNHH/action/citation_signature","submit_replication":"https://pith.science/pith/NWIPGWLIB2HBNCOMBSBNS7XNHH/action/replication_record"}},"created_at":"2026-05-18T04:29:07.245490+00:00","updated_at":"2026-05-18T04:29:07.245490+00:00"}