{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:M66OKZYSWRR4JW4N4HEYH3JRC2","short_pith_number":"pith:M66OKZYS","canonical_record":{"source":{"id":"1605.02076","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-05-06T20:00:06Z","cross_cats_sorted":[],"title_canon_sha256":"aa4193a764d7248b04355004485504242233cc1b9cc9ee691d0b9680dce52f94","abstract_canon_sha256":"4c7fb8f4cb5da0a7be572c403f3023732bb2f1875f7e7390b66e1d6e3030a0e0"},"schema_version":"1.0"},"canonical_sha256":"67bce56712b463c4db8de1c983ed3116a973f53353efec30e9c64aceb32ab14d","source":{"kind":"arxiv","id":"1605.02076","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1605.02076","created_at":"2026-05-18T01:10:37Z"},{"alias_kind":"arxiv_version","alias_value":"1605.02076v2","created_at":"2026-05-18T01:10:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1605.02076","created_at":"2026-05-18T01:10:37Z"},{"alias_kind":"pith_short_12","alias_value":"M66OKZYSWRR4","created_at":"2026-05-18T12:30:29Z"},{"alias_kind":"pith_short_16","alias_value":"M66OKZYSWRR4JW4N","created_at":"2026-05-18T12:30:29Z"},{"alias_kind":"pith_short_8","alias_value":"M66OKZYS","created_at":"2026-05-18T12:30:29Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:M66OKZYSWRR4JW4N4HEYH3JRC2","target":"record","payload":{"canonical_record":{"source":{"id":"1605.02076","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-05-06T20:00:06Z","cross_cats_sorted":[],"title_canon_sha256":"aa4193a764d7248b04355004485504242233cc1b9cc9ee691d0b9680dce52f94","abstract_canon_sha256":"4c7fb8f4cb5da0a7be572c403f3023732bb2f1875f7e7390b66e1d6e3030a0e0"},"schema_version":"1.0"},"canonical_sha256":"67bce56712b463c4db8de1c983ed3116a973f53353efec30e9c64aceb32ab14d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:10:37.611949Z","signature_b64":"eK/WwB68xdr8watlSd3bUvppAGLAIVFX9i2CiaAqGTAQWMJDIvaAFx0Ti8vKPbC0nRn5xCriIvq1cGrDQd2jCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"67bce56712b463c4db8de1c983ed3116a973f53353efec30e9c64aceb32ab14d","last_reissued_at":"2026-05-18T01:10:37.611429Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:10:37.611429Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1605.02076","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:10:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"iB43xGnShhUzLhjBh52KyVmk/Wguk736hI7O7Bmwtgli7O5P/nNSYCktT02psDn/dOSeC/g4t+AqRvIB/+A2BA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T16:04:17.760478Z"},"content_sha256":"8f8bbd4147ec52745c00c56190204e1ad77689fd444466232db912d385794de9","schema_version":"1.0","event_id":"sha256:8f8bbd4147ec52745c00c56190204e1ad77689fd444466232db912d385794de9"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:M66OKZYSWRR4JW4N4HEYH3JRC2","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The build-up of the red sequence in the Hercules cluster","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"A. Diaferio, I. Agulli, J. A. L. Aguerri, L. Dominguez Palmero","submitted_at":"2016-05-06T20:00:06Z","abstract_excerpt":"We present the study of the colour-magnitude diagram of the cluster Abell 2151 (A2151), with a particular focus on the low-mass end. The deep spectroscopy with AF2/WYFFOS@WHT and the caustic method enable us to obtain 360 members within 1.3 R_200 and absolute magnitude M_r < M*_r+6. This nearby cluster shows a well defined red sequence up to M_r ~ - 18.5; at fainter magnitudes only 36% of the galaxies lie on the extrapolation of the red sequence. We compare the red sequences of A2151 and Abell 85, which is another nearby cluster with similar spectroscopic data, but with different mass and dyna"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1605.02076","kind":"arxiv","version":2},"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":"2026-05-18T01:10:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"plZDmyUqorHAsIczuSdYAacAHhUiwfX+x0XM1jhjOEtESoY37x8iK3cn5YyB5PI7AVD7DnX6PIo/9s5CoyfKBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T16:04:17.760830Z"},"content_sha256":"40706382844c837ed6fe38e76118be4d3fc58c73e36f4c136825e677f3999b65","schema_version":"1.0","event_id":"sha256:40706382844c837ed6fe38e76118be4d3fc58c73e36f4c136825e677f3999b65"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/M66OKZYSWRR4JW4N4HEYH3JRC2/bundle.json","state_url":"https://pith.science/pith/M66OKZYSWRR4JW4N4HEYH3JRC2/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/M66OKZYSWRR4JW4N4HEYH3JRC2/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":"2026-05-28T16:04:17Z","links":{"resolver":"https://pith.science/pith/M66OKZYSWRR4JW4N4HEYH3JRC2","bundle":"https://pith.science/pith/M66OKZYSWRR4JW4N4HEYH3JRC2/bundle.json","state":"https://pith.science/pith/M66OKZYSWRR4JW4N4HEYH3JRC2/state.json","well_known_bundle":"https://pith.science/.well-known/pith/M66OKZYSWRR4JW4N4HEYH3JRC2/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:M66OKZYSWRR4JW4N4HEYH3JRC2","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":"4c7fb8f4cb5da0a7be572c403f3023732bb2f1875f7e7390b66e1d6e3030a0e0","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-05-06T20:00:06Z","title_canon_sha256":"aa4193a764d7248b04355004485504242233cc1b9cc9ee691d0b9680dce52f94"},"schema_version":"1.0","source":{"id":"1605.02076","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1605.02076","created_at":"2026-05-18T01:10:37Z"},{"alias_kind":"arxiv_version","alias_value":"1605.02076v2","created_at":"2026-05-18T01:10:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1605.02076","created_at":"2026-05-18T01:10:37Z"},{"alias_kind":"pith_short_12","alias_value":"M66OKZYSWRR4","created_at":"2026-05-18T12:30:29Z"},{"alias_kind":"pith_short_16","alias_value":"M66OKZYSWRR4JW4N","created_at":"2026-05-18T12:30:29Z"},{"alias_kind":"pith_short_8","alias_value":"M66OKZYS","created_at":"2026-05-18T12:30:29Z"}],"graph_snapshots":[{"event_id":"sha256:40706382844c837ed6fe38e76118be4d3fc58c73e36f4c136825e677f3999b65","target":"graph","created_at":"2026-05-18T01:10:37Z","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 the study of the colour-magnitude diagram of the cluster Abell 2151 (A2151), with a particular focus on the low-mass end. The deep spectroscopy with AF2/WYFFOS@WHT and the caustic method enable us to obtain 360 members within 1.3 R_200 and absolute magnitude M_r < M*_r+6. This nearby cluster shows a well defined red sequence up to M_r ~ - 18.5; at fainter magnitudes only 36% of the galaxies lie on the extrapolation of the red sequence. We compare the red sequences of A2151 and Abell 85, which is another nearby cluster with similar spectroscopic data, but with different mass and dyna","authors_text":"A. Diaferio, I. Agulli, J. A. L. Aguerri, L. Dominguez Palmero","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-05-06T20:00:06Z","title":"The build-up of the red sequence in the Hercules cluster"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1605.02076","kind":"arxiv","version":2},"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":"sha256:8f8bbd4147ec52745c00c56190204e1ad77689fd444466232db912d385794de9","target":"record","created_at":"2026-05-18T01:10:37Z","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":"4c7fb8f4cb5da0a7be572c403f3023732bb2f1875f7e7390b66e1d6e3030a0e0","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-05-06T20:00:06Z","title_canon_sha256":"aa4193a764d7248b04355004485504242233cc1b9cc9ee691d0b9680dce52f94"},"schema_version":"1.0","source":{"id":"1605.02076","kind":"arxiv","version":2}},"canonical_sha256":"67bce56712b463c4db8de1c983ed3116a973f53353efec30e9c64aceb32ab14d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"67bce56712b463c4db8de1c983ed3116a973f53353efec30e9c64aceb32ab14d","first_computed_at":"2026-05-18T01:10:37.611429Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:10:37.611429Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"eK/WwB68xdr8watlSd3bUvppAGLAIVFX9i2CiaAqGTAQWMJDIvaAFx0Ti8vKPbC0nRn5xCriIvq1cGrDQd2jCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:10:37.611949Z","signed_message":"canonical_sha256_bytes"},"source_id":"1605.02076","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8f8bbd4147ec52745c00c56190204e1ad77689fd444466232db912d385794de9","sha256:40706382844c837ed6fe38e76118be4d3fc58c73e36f4c136825e677f3999b65"],"state_sha256":"4427b146cee1e92ef6fdde115d531bf3992d64b4cd0d13c4074b7bd0400524eb"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3ji/xznb7icDxdQt1Q4cLEaKSDcLvDdLiYankRHk+4lQFC6S3A7kdorWdghjSVJc0enKmv76vMzBSxBYcAkICQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T16:04:17.762816Z","bundle_sha256":"feddd4420b912145cdb1c9d7f014399176e702f3527ac1e997bdac6ee09348b4"}}