{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2012:2WNFOSBEA7EEX5VY644DNUTNRR","short_pith_number":"pith:2WNFOSBE","schema_version":"1.0","canonical_sha256":"d59a57482407c84bf6b8f73836d26d8c7350f43317dbc16b5dde65055c0dfb6f","source":{"kind":"arxiv","id":"1209.0014","version":1},"attestation_state":"computed","paper":{"title":"The 2200 A bump and the UV extinction curve","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Frederic Zagury","submitted_at":"2012-08-31T20:51:19Z","abstract_excerpt":"The 2200 A bump is a major figure of interstellar extinction. Extinction curves with no bump however exist and are, with no exception, linear from the near-infrared down to 2500 A at least, often over all the visible-UV spectrum. The duality linear versus bump-like extinction curves can be used to re-investigate the relationship between the bump and the continuum of interstellar extinction, and answer questions as why do we observe two different kinds of extinction (linear or with a bump) in interstellar clouds? How are they related? How does the existence of two different extinction laws fits"},"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":"1209.0014","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2012-08-31T20:51:19Z","cross_cats_sorted":[],"title_canon_sha256":"3b552bb0437b2aac77d4293a0f38ff7758e2520c99a307054983ebc142edfa9f","abstract_canon_sha256":"04b3e074ed8ce85b1eddab4eece0094c97126de4c816ec6fd8c9c222ceb07bf0"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:54:48.806785Z","signature_b64":"w7y9fWZDI+XLfx+y3czc3pWG7sIlEPmgOJChc5SkIISrSmSsLArHuPouS1uumF/XEx9S0LLceflesAmE8ZTJBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d59a57482407c84bf6b8f73836d26d8c7350f43317dbc16b5dde65055c0dfb6f","last_reissued_at":"2026-05-18T01:54:48.806244Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:54:48.806244Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"The 2200 A bump and the UV extinction curve","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Frederic Zagury","submitted_at":"2012-08-31T20:51:19Z","abstract_excerpt":"The 2200 A bump is a major figure of interstellar extinction. Extinction curves with no bump however exist and are, with no exception, linear from the near-infrared down to 2500 A at least, often over all the visible-UV spectrum. The duality linear versus bump-like extinction curves can be used to re-investigate the relationship between the bump and the continuum of interstellar extinction, and answer questions as why do we observe two different kinds of extinction (linear or with a bump) in interstellar clouds? How are they related? How does the existence of two different extinction laws fits"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1209.0014","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":"1209.0014","created_at":"2026-05-18T01:54:48.806330+00:00"},{"alias_kind":"arxiv_version","alias_value":"1209.0014v1","created_at":"2026-05-18T01:54:48.806330+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1209.0014","created_at":"2026-05-18T01:54:48.806330+00:00"},{"alias_kind":"pith_short_12","alias_value":"2WNFOSBEA7EE","created_at":"2026-05-18T12:26:50.516681+00:00"},{"alias_kind":"pith_short_16","alias_value":"2WNFOSBEA7EEX5VY","created_at":"2026-05-18T12:26:50.516681+00:00"},{"alias_kind":"pith_short_8","alias_value":"2WNFOSBE","created_at":"2026-05-18T12:26:50.516681+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/2WNFOSBEA7EEX5VY644DNUTNRR","json":"https://pith.science/pith/2WNFOSBEA7EEX5VY644DNUTNRR.json","graph_json":"https://pith.science/api/pith-number/2WNFOSBEA7EEX5VY644DNUTNRR/graph.json","events_json":"https://pith.science/api/pith-number/2WNFOSBEA7EEX5VY644DNUTNRR/events.json","paper":"https://pith.science/paper/2WNFOSBE"},"agent_actions":{"view_html":"https://pith.science/pith/2WNFOSBEA7EEX5VY644DNUTNRR","download_json":"https://pith.science/pith/2WNFOSBEA7EEX5VY644DNUTNRR.json","view_paper":"https://pith.science/paper/2WNFOSBE","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1209.0014&json=true","fetch_graph":"https://pith.science/api/pith-number/2WNFOSBEA7EEX5VY644DNUTNRR/graph.json","fetch_events":"https://pith.science/api/pith-number/2WNFOSBEA7EEX5VY644DNUTNRR/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/2WNFOSBEA7EEX5VY644DNUTNRR/action/timestamp_anchor","attest_storage":"https://pith.science/pith/2WNFOSBEA7EEX5VY644DNUTNRR/action/storage_attestation","attest_author":"https://pith.science/pith/2WNFOSBEA7EEX5VY644DNUTNRR/action/author_attestation","sign_citation":"https://pith.science/pith/2WNFOSBEA7EEX5VY644DNUTNRR/action/citation_signature","submit_replication":"https://pith.science/pith/2WNFOSBEA7EEX5VY644DNUTNRR/action/replication_record"}},"created_at":"2026-05-18T01:54:48.806330+00:00","updated_at":"2026-05-18T01:54:48.806330+00:00"}