{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2005:3532OV3V3ZYOKADC34ORAUSUHW","short_pith_number":"pith:3532OV3V","schema_version":"1.0","canonical_sha256":"df77a75775de70e50062df1d1052543d95c42399b586effc398c6cf091e227ac","source":{"kind":"arxiv","id":"astro-ph/0504532","version":1},"attestation_state":"computed","paper":{"title":"Evidence for the presence of dust in intervening QSO absorbers from the Sloan Digital Sky Survey","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"A. Kumar, A. P. S.Crotts, B. Baugher, B. Lundgren, B. Menard, & C.W. Yip, D. E. Welty, D. G. York, D. Turnshek, D. Vanden Berk, E. B. Jenkins, G. T. Richards, J. T. Lauroesch, J. Vanlandingha, N. Shanidze, P. B. Hall, P. Khare, S. Rao, V. P. Kulkarni, Y. Alsayyad","submitted_at":"2005-04-25T05:40:22Z","abstract_excerpt":"We find evidence for dust in the intervening QSO absorbers from the spectra of QSOs in the Sloan Digital Sky Survey Data Release 1. No evidence is found for the 2175 A feature which is present in the Milky Way dust extinction curve. The extinction curve resembles the SMC extinction curve. The observed Delta(g-i) excess for QSOs with strong absorption systems appears to be a result of the reddening due to dust in the intervening absorbers."},"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/0504532","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2005-04-25T05:40:22Z","cross_cats_sorted":[],"title_canon_sha256":"e14dbabf2acca6e7543e886c30e1c768bfbed5510b8885c496d93d38dc76ad72","abstract_canon_sha256":"aef324bb220cf43bef7fe1147ea1b66daf4feb3b3804b7f5ed84dabff99ded9f"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T16:52:15.167817Z","signature_b64":"0DMuWkNa+OegDbcw/iFgV7f1lddrBBSsovQYymGWW2CXv77R81guh4gow10pAGefB9YVbT6nWHYT5f/91jFLCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"df77a75775de70e50062df1d1052543d95c42399b586effc398c6cf091e227ac","last_reissued_at":"2026-07-04T16:52:15.167367Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T16:52:15.167367Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Evidence for the presence of dust in intervening QSO absorbers from the Sloan Digital Sky Survey","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"A. Kumar, A. P. S.Crotts, B. Baugher, B. Lundgren, B. Menard, & C.W. Yip, D. E. Welty, D. G. York, D. Turnshek, D. Vanden Berk, E. B. Jenkins, G. T. Richards, J. T. Lauroesch, J. Vanlandingha, N. Shanidze, P. B. Hall, P. Khare, S. Rao, V. P. Kulkarni, Y. Alsayyad","submitted_at":"2005-04-25T05:40:22Z","abstract_excerpt":"We find evidence for dust in the intervening QSO absorbers from the spectra of QSOs in the Sloan Digital Sky Survey Data Release 1. No evidence is found for the 2175 A feature which is present in the Milky Way dust extinction curve. The extinction curve resembles the SMC extinction curve. The observed Delta(g-i) excess for QSOs with strong absorption systems appears to be a result of the reddening due to dust in the intervening absorbers."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0504532","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/astro-ph/0504532/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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/0504532","created_at":"2026-07-04T16:52:15.167449+00:00"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0504532v1","created_at":"2026-07-04T16:52:15.167449+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0504532","created_at":"2026-07-04T16:52:15.167449+00:00"},{"alias_kind":"pith_short_12","alias_value":"3532OV3V3ZYO","created_at":"2026-07-04T16:52:15.167449+00:00"},{"alias_kind":"pith_short_16","alias_value":"3532OV3V3ZYOKADC","created_at":"2026-07-04T16:52:15.167449+00:00"},{"alias_kind":"pith_short_8","alias_value":"3532OV3V","created_at":"2026-07-04T16:52:15.167449+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/3532OV3V3ZYOKADC34ORAUSUHW","json":"https://pith.science/pith/3532OV3V3ZYOKADC34ORAUSUHW.json","graph_json":"https://pith.science/api/pith-number/3532OV3V3ZYOKADC34ORAUSUHW/graph.json","events_json":"https://pith.science/api/pith-number/3532OV3V3ZYOKADC34ORAUSUHW/events.json","paper":"https://pith.science/paper/3532OV3V"},"agent_actions":{"view_html":"https://pith.science/pith/3532OV3V3ZYOKADC34ORAUSUHW","download_json":"https://pith.science/pith/3532OV3V3ZYOKADC34ORAUSUHW.json","view_paper":"https://pith.science/paper/3532OV3V","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=astro-ph/0504532&json=true","fetch_graph":"https://pith.science/api/pith-number/3532OV3V3ZYOKADC34ORAUSUHW/graph.json","fetch_events":"https://pith.science/api/pith-number/3532OV3V3ZYOKADC34ORAUSUHW/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/3532OV3V3ZYOKADC34ORAUSUHW/action/timestamp_anchor","attest_storage":"https://pith.science/pith/3532OV3V3ZYOKADC34ORAUSUHW/action/storage_attestation","attest_author":"https://pith.science/pith/3532OV3V3ZYOKADC34ORAUSUHW/action/author_attestation","sign_citation":"https://pith.science/pith/3532OV3V3ZYOKADC34ORAUSUHW/action/citation_signature","submit_replication":"https://pith.science/pith/3532OV3V3ZYOKADC34ORAUSUHW/action/replication_record"}},"created_at":"2026-07-04T16:52:15.167449+00:00","updated_at":"2026-07-04T16:52:15.167449+00:00"}