{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2006:WTHKTK7EIUDMLIL5Y4L3PUUNCC","short_pith_number":"pith:WTHKTK7E","canonical_record":{"source":{"id":"astro-ph/0601036","kind":"arxiv","version":3},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2006-01-02T21:08:22Z","cross_cats_sorted":[],"title_canon_sha256":"a145de9fd02ddc1fce05d3260f2f333870d0a1e392631c469dacf91ea3077e08","abstract_canon_sha256":"fa30ec35d52a6bf012294807615829bee6fd7ae8453a91f0da772894d785bf51"},"schema_version":"1.0"},"canonical_sha256":"b4cea9abe44506c5a17dc717b7d28d10b495c43a08c96c4f0042019bc721bccd","source":{"kind":"arxiv","id":"astro-ph/0601036","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0601036","created_at":"2026-05-18T02:40:25Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0601036v3","created_at":"2026-05-18T02:40:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0601036","created_at":"2026-05-18T02:40:25Z"},{"alias_kind":"pith_short_12","alias_value":"WTHKTK7EIUDM","created_at":"2026-05-18T12:25:54Z"},{"alias_kind":"pith_short_16","alias_value":"WTHKTK7EIUDMLIL5","created_at":"2026-05-18T12:25:54Z"},{"alias_kind":"pith_short_8","alias_value":"WTHKTK7E","created_at":"2026-05-18T12:25:54Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2006:WTHKTK7EIUDMLIL5Y4L3PUUNCC","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/0601036","kind":"arxiv","version":3},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2006-01-02T21:08:22Z","cross_cats_sorted":[],"title_canon_sha256":"a145de9fd02ddc1fce05d3260f2f333870d0a1e392631c469dacf91ea3077e08","abstract_canon_sha256":"fa30ec35d52a6bf012294807615829bee6fd7ae8453a91f0da772894d785bf51"},"schema_version":"1.0"},"canonical_sha256":"b4cea9abe44506c5a17dc717b7d28d10b495c43a08c96c4f0042019bc721bccd","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:40:25.475643Z","signature_b64":"94/doDjD0jaE7VW/5k7EG6mzlZDuK62O2fRGFB9vqWP9gIiqeQlpI5PCngC2AuVOMwXsErP12UM2xFNn+A30CA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b4cea9abe44506c5a17dc717b7d28d10b495c43a08c96c4f0042019bc721bccd","last_reissued_at":"2026-05-18T02:40:25.475199Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:40:25.475199Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/0601036","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:40:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4WST5Lah8PngTM4ToGPPmZ4xge2pYP4mt+rwH4CboMtxsI/c5MXhOzG0GWwjnH/gdqvz6a6smAghD6rpg11rDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T12:39:25.494719Z"},"content_sha256":"dece696fc9786b1b539bdbd1aa13186816a3504d7bab81ebcbf9e11bd04e2436","schema_version":"1.0","event_id":"sha256:dece696fc9786b1b539bdbd1aa13186816a3504d7bab81ebcbf9e11bd04e2436"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2006:WTHKTK7EIUDMLIL5Y4L3PUUNCC","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The effect of environment on the UV colour-magnitude relation of early-type galaxies","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"A. Boselli, A. Szalay, B. Madore, B. Milliard, D. C. Martin, D. Schiminovich, J. Donas, J.-M. Deharveng, K. Forster, K. Schawinski, L. Bianchi, M. Seibert, P. Friedman, P. Morrissey, R. M. Rich, S.-J. Yoon, S. Kaviraj, S. Khochfar, S. K. Yi, S. Neff, T. Barlow, T. Conrow, T. Heckman, T. Small, T.Wyder, Y.-W. Lee","submitted_at":"2006-01-02T21:08:22Z","abstract_excerpt":"We use \\textit{GALEX} (Galaxy Evolution Explorer) near-UV (NUV) photometry of a sample of early-type galaxies selected in \\textit{SDSS} (Sloan Digital Sky Survey) to study the UV color-magnitude relation (CMR). $NUV-r$ color is an excellent tracer of even small amounts ($\\sim 1$% mass fraction) of recent ($\\la 1$ Gyr) star formation and so the $NUV-r$ CMR allows us to study the effect of environment on the recent star formation history. We analyze a volume-limited sample of 839 visually-inspected early-type galaxies in the redshift range $0.05 < z < 0.10$ brighter than $M_{r}$ of -21.5 with an"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0601036","kind":"arxiv","version":3},"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":"2026-05-18T02:40:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0kiVYpH7r+gbS/dJTAlTgnih/jDxu9Oj7Um1wj7nZr+oS1aC/hW3QtMupinHwUsCEo3QJdBHL3Nk4WQmhRjGDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T12:39:25.495067Z"},"content_sha256":"b5c13122c557d8aa44429a5cef5efe3756b14f62948d0dd639a30c5b4e72db53","schema_version":"1.0","event_id":"sha256:b5c13122c557d8aa44429a5cef5efe3756b14f62948d0dd639a30c5b4e72db53"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/WTHKTK7EIUDMLIL5Y4L3PUUNCC/bundle.json","state_url":"https://pith.science/pith/WTHKTK7EIUDMLIL5Y4L3PUUNCC/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/WTHKTK7EIUDMLIL5Y4L3PUUNCC/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":"2026-06-04T12:39:25Z","links":{"resolver":"https://pith.science/pith/WTHKTK7EIUDMLIL5Y4L3PUUNCC","bundle":"https://pith.science/pith/WTHKTK7EIUDMLIL5Y4L3PUUNCC/bundle.json","state":"https://pith.science/pith/WTHKTK7EIUDMLIL5Y4L3PUUNCC/state.json","well_known_bundle":"https://pith.science/.well-known/pith/WTHKTK7EIUDMLIL5Y4L3PUUNCC/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2006:WTHKTK7EIUDMLIL5Y4L3PUUNCC","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":"fa30ec35d52a6bf012294807615829bee6fd7ae8453a91f0da772894d785bf51","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2006-01-02T21:08:22Z","title_canon_sha256":"a145de9fd02ddc1fce05d3260f2f333870d0a1e392631c469dacf91ea3077e08"},"schema_version":"1.0","source":{"id":"astro-ph/0601036","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0601036","created_at":"2026-05-18T02:40:25Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0601036v3","created_at":"2026-05-18T02:40:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0601036","created_at":"2026-05-18T02:40:25Z"},{"alias_kind":"pith_short_12","alias_value":"WTHKTK7EIUDM","created_at":"2026-05-18T12:25:54Z"},{"alias_kind":"pith_short_16","alias_value":"WTHKTK7EIUDMLIL5","created_at":"2026-05-18T12:25:54Z"},{"alias_kind":"pith_short_8","alias_value":"WTHKTK7E","created_at":"2026-05-18T12:25:54Z"}],"graph_snapshots":[{"event_id":"sha256:b5c13122c557d8aa44429a5cef5efe3756b14f62948d0dd639a30c5b4e72db53","target":"graph","created_at":"2026-05-18T02:40:25Z","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 use \\textit{GALEX} (Galaxy Evolution Explorer) near-UV (NUV) photometry of a sample of early-type galaxies selected in \\textit{SDSS} (Sloan Digital Sky Survey) to study the UV color-magnitude relation (CMR). $NUV-r$ color is an excellent tracer of even small amounts ($\\sim 1$% mass fraction) of recent ($\\la 1$ Gyr) star formation and so the $NUV-r$ CMR allows us to study the effect of environment on the recent star formation history. We analyze a volume-limited sample of 839 visually-inspected early-type galaxies in the redshift range $0.05 < z < 0.10$ brighter than $M_{r}$ of -21.5 with an","authors_text":"A. Boselli, A. Szalay, B. Madore, B. Milliard, D. C. Martin, D. Schiminovich, J. Donas, J.-M. Deharveng, K. Forster, K. Schawinski, L. Bianchi, M. Seibert, P. Friedman, P. Morrissey, R. M. Rich, S.-J. Yoon, S. Kaviraj, S. Khochfar, S. K. Yi, S. Neff, T. Barlow, T. Conrow, T. Heckman, T. Small, T.Wyder, Y.-W. Lee","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2006-01-02T21:08:22Z","title":"The effect of environment on the UV colour-magnitude relation of early-type galaxies"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0601036","kind":"arxiv","version":3},"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:dece696fc9786b1b539bdbd1aa13186816a3504d7bab81ebcbf9e11bd04e2436","target":"record","created_at":"2026-05-18T02:40:25Z","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":"fa30ec35d52a6bf012294807615829bee6fd7ae8453a91f0da772894d785bf51","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2006-01-02T21:08:22Z","title_canon_sha256":"a145de9fd02ddc1fce05d3260f2f333870d0a1e392631c469dacf91ea3077e08"},"schema_version":"1.0","source":{"id":"astro-ph/0601036","kind":"arxiv","version":3}},"canonical_sha256":"b4cea9abe44506c5a17dc717b7d28d10b495c43a08c96c4f0042019bc721bccd","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b4cea9abe44506c5a17dc717b7d28d10b495c43a08c96c4f0042019bc721bccd","first_computed_at":"2026-05-18T02:40:25.475199Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:40:25.475199Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"94/doDjD0jaE7VW/5k7EG6mzlZDuK62O2fRGFB9vqWP9gIiqeQlpI5PCngC2AuVOMwXsErP12UM2xFNn+A30CA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:40:25.475643Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0601036","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:dece696fc9786b1b539bdbd1aa13186816a3504d7bab81ebcbf9e11bd04e2436","sha256:b5c13122c557d8aa44429a5cef5efe3756b14f62948d0dd639a30c5b4e72db53"],"state_sha256":"737489fa601b9bb18ee8672d338a5f0fe031a0a60ea7ddee120c069c9c3b285b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BecY9961zQpXlwjaaNi75Tk4yTm2Gj2E1EYCqlESEjtp/kO9D4DtA2ElZxgfROla/yZyncBSvApqCrnP0qDTCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-04T12:39:25.497042Z","bundle_sha256":"b82188e0dceeb5785afb9b1d9e4aa0dd08fbcfc192b1b80a08cfbc8cd33375b7"}}