{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2000:7RHXXVKDBJXWVPXNDDQDE5SVR6","short_pith_number":"pith:7RHXXVKD","canonical_record":{"source":{"id":"astro-ph/0004079","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2000-04-06T10:46:38Z","cross_cats_sorted":[],"title_canon_sha256":"96e5d9937f3a19e5e8dcb09ec57ceea1fc3c44433c6a51aeed28011c8f80d56d","abstract_canon_sha256":"18c355fe658ed71d5fe171d0c5c7d47cf31bbcbf91b3f4daa73e2f11fb130131"},"schema_version":"1.0"},"canonical_sha256":"fc4f7bd5430a6f6abeed18e03276558f81a65298c5cb56a34e5589eac35d27ba","source":{"kind":"arxiv","id":"astro-ph/0004079","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0004079","created_at":"2026-05-18T04:21:42Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0004079v1","created_at":"2026-05-18T04:21:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0004079","created_at":"2026-05-18T04:21:42Z"},{"alias_kind":"pith_short_12","alias_value":"7RHXXVKDBJXW","created_at":"2026-05-18T12:25:49Z"},{"alias_kind":"pith_short_16","alias_value":"7RHXXVKDBJXWVPXN","created_at":"2026-05-18T12:25:49Z"},{"alias_kind":"pith_short_8","alias_value":"7RHXXVKD","created_at":"2026-05-18T12:25:49Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2000:7RHXXVKDBJXWVPXNDDQDE5SVR6","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/0004079","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2000-04-06T10:46:38Z","cross_cats_sorted":[],"title_canon_sha256":"96e5d9937f3a19e5e8dcb09ec57ceea1fc3c44433c6a51aeed28011c8f80d56d","abstract_canon_sha256":"18c355fe658ed71d5fe171d0c5c7d47cf31bbcbf91b3f4daa73e2f11fb130131"},"schema_version":"1.0"},"canonical_sha256":"fc4f7bd5430a6f6abeed18e03276558f81a65298c5cb56a34e5589eac35d27ba","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:21:42.691934Z","signature_b64":"ZUffsvcc5AGukd8ksxcN0Y4t5xbrvmYniqjXnA5SGz/Q7JZEArjWju+a//uHt9p41zDrX96KnK3+dZZrdc0RCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"fc4f7bd5430a6f6abeed18e03276558f81a65298c5cb56a34e5589eac35d27ba","last_reissued_at":"2026-05-18T04:21:42.691289Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:21:42.691289Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/0004079","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T04:21:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MkuGPWEjvsIISCgjbEkgZLVYfSSHsLJP+1DVa+LVC5CzmI5XsGNS7R9ycDDMxMCh4B+EYSnE1D9xXDEgu1FjCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T11:32:27.718072Z"},"content_sha256":"fefe44f6b4d24ffb8f64b9a64470a0782541861187da3f1da0323589703282af","schema_version":"1.0","event_id":"sha256:fefe44f6b4d24ffb8f64b9a64470a0782541861187da3f1da0323589703282af"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2000:7RHXXVKDBJXWVPXNDDQDE5SVR6","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The sources of extended continuum emission towards Q0151+048A : The host galaxy and the Damped Ly-alpha Absorber","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Garching), I. Burud (Institut d'Astrophysique, J.U. Fynbo (IFA, P. Moller (ESO, Universite de Liege), University of Aarhus)","submitted_at":"2000-04-06T10:46:38Z","abstract_excerpt":"We present deep imaging in the U, B and I bands obtained under excellent seeing conditions of the double quasar Q0151+048A,B and of the Damped Ly-alpha (DLA) absorbing galaxy at z(abs) = 1.9342 named S4.\n  We analyse the data employing two separate and independent methods. First we deconvolve the images using the MCS algorithm, secondly we decompose the images via an object based iteration process where we fit models to objects without any attempt to improve the resolution of the data. Our detailed analysis of the images reveals, somewhat surprisingly, that extended objects centred on the quas"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0004079","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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T04:21:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BmJwH4D1yllkjZ0wRmGGMTkeRIKOrhP3jMj+LXNaNKe3FMREQHu19+I78PQMXdagYXcjTDp+3PXFQBnvub+ZCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T11:32:27.718751Z"},"content_sha256":"a51a1d4074ed2e0078d9a9501e63ba06b899d6e5815f312acc0cc219fb01d275","schema_version":"1.0","event_id":"sha256:a51a1d4074ed2e0078d9a9501e63ba06b899d6e5815f312acc0cc219fb01d275"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/7RHXXVKDBJXWVPXNDDQDE5SVR6/bundle.json","state_url":"https://pith.science/pith/7RHXXVKDBJXWVPXNDDQDE5SVR6/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/7RHXXVKDBJXWVPXNDDQDE5SVR6/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-05-31T11:32:27Z","links":{"resolver":"https://pith.science/pith/7RHXXVKDBJXWVPXNDDQDE5SVR6","bundle":"https://pith.science/pith/7RHXXVKDBJXWVPXNDDQDE5SVR6/bundle.json","state":"https://pith.science/pith/7RHXXVKDBJXWVPXNDDQDE5SVR6/state.json","well_known_bundle":"https://pith.science/.well-known/pith/7RHXXVKDBJXWVPXNDDQDE5SVR6/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2000:7RHXXVKDBJXWVPXNDDQDE5SVR6","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"18c355fe658ed71d5fe171d0c5c7d47cf31bbcbf91b3f4daa73e2f11fb130131","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2000-04-06T10:46:38Z","title_canon_sha256":"96e5d9937f3a19e5e8dcb09ec57ceea1fc3c44433c6a51aeed28011c8f80d56d"},"schema_version":"1.0","source":{"id":"astro-ph/0004079","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0004079","created_at":"2026-05-18T04:21:42Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0004079v1","created_at":"2026-05-18T04:21:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0004079","created_at":"2026-05-18T04:21:42Z"},{"alias_kind":"pith_short_12","alias_value":"7RHXXVKDBJXW","created_at":"2026-05-18T12:25:49Z"},{"alias_kind":"pith_short_16","alias_value":"7RHXXVKDBJXWVPXN","created_at":"2026-05-18T12:25:49Z"},{"alias_kind":"pith_short_8","alias_value":"7RHXXVKD","created_at":"2026-05-18T12:25:49Z"}],"graph_snapshots":[{"event_id":"sha256:a51a1d4074ed2e0078d9a9501e63ba06b899d6e5815f312acc0cc219fb01d275","target":"graph","created_at":"2026-05-18T04:21:42Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"We present deep imaging in the U, B and I bands obtained under excellent seeing conditions of the double quasar Q0151+048A,B and of the Damped Ly-alpha (DLA) absorbing galaxy at z(abs) = 1.9342 named S4.\n  We analyse the data employing two separate and independent methods. First we deconvolve the images using the MCS algorithm, secondly we decompose the images via an object based iteration process where we fit models to objects without any attempt to improve the resolution of the data. Our detailed analysis of the images reveals, somewhat surprisingly, that extended objects centred on the quas","authors_text":"Garching), I. Burud (Institut d'Astrophysique, J.U. Fynbo (IFA, P. Moller (ESO, Universite de Liege), University of Aarhus)","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2000-04-06T10:46:38Z","title":"The sources of extended continuum emission towards Q0151+048A : The host galaxy and the Damped Ly-alpha Absorber"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0004079","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:fefe44f6b4d24ffb8f64b9a64470a0782541861187da3f1da0323589703282af","target":"record","created_at":"2026-05-18T04:21:42Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"18c355fe658ed71d5fe171d0c5c7d47cf31bbcbf91b3f4daa73e2f11fb130131","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2000-04-06T10:46:38Z","title_canon_sha256":"96e5d9937f3a19e5e8dcb09ec57ceea1fc3c44433c6a51aeed28011c8f80d56d"},"schema_version":"1.0","source":{"id":"astro-ph/0004079","kind":"arxiv","version":1}},"canonical_sha256":"fc4f7bd5430a6f6abeed18e03276558f81a65298c5cb56a34e5589eac35d27ba","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"fc4f7bd5430a6f6abeed18e03276558f81a65298c5cb56a34e5589eac35d27ba","first_computed_at":"2026-05-18T04:21:42.691289Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:21:42.691289Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ZUffsvcc5AGukd8ksxcN0Y4t5xbrvmYniqjXnA5SGz/Q7JZEArjWju+a//uHt9p41zDrX96KnK3+dZZrdc0RCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T04:21:42.691934Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0004079","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:fefe44f6b4d24ffb8f64b9a64470a0782541861187da3f1da0323589703282af","sha256:a51a1d4074ed2e0078d9a9501e63ba06b899d6e5815f312acc0cc219fb01d275"],"state_sha256":"a3fb4c67b3238a7c3b4c281b4a285efeec2ef90f6ac606e5d835debe93f2da7a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"vpqH0SRdpdgVfzEksgHXROaSf/YoTRH503xcMXGCplFH7I+czzkUT82e4qqVwHfLK180Q2N/8O8V0gnVqsBZBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T11:32:27.722919Z","bundle_sha256":"c197d9a00a6b3130d1f18f64d0f1fde6fc8662026b8074ebbf2a614b6272d6e1"}}