{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:4OOCXAIQP3HJEC723QEYLSSWOU","short_pith_number":"pith:4OOCXAIQ","canonical_record":{"source":{"id":"1211.5131","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-11-21T20:26:51Z","cross_cats_sorted":["astro-ph.GA","astro-ph.SR"],"title_canon_sha256":"9fd760c1dea649e2bf23d8f5bd1c964aad608a9bd6b4500d868953737452562d","abstract_canon_sha256":"8240cd98812fd19dfc8ece8db81358d3d6768fd12104e49daaa695f8c0919587"},"schema_version":"1.0"},"canonical_sha256":"e39c2b81107ece920bfadc0985ca56753397f98471af226b84f4e75fea87810c","source":{"kind":"arxiv","id":"1211.5131","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1211.5131","created_at":"2026-05-18T03:37:19Z"},{"alias_kind":"arxiv_version","alias_value":"1211.5131v2","created_at":"2026-05-18T03:37:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1211.5131","created_at":"2026-05-18T03:37:19Z"},{"alias_kind":"pith_short_12","alias_value":"4OOCXAIQP3HJ","created_at":"2026-05-18T12:26:53Z"},{"alias_kind":"pith_short_16","alias_value":"4OOCXAIQP3HJEC72","created_at":"2026-05-18T12:26:53Z"},{"alias_kind":"pith_short_8","alias_value":"4OOCXAIQ","created_at":"2026-05-18T12:26:53Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:4OOCXAIQP3HJEC723QEYLSSWOU","target":"record","payload":{"canonical_record":{"source":{"id":"1211.5131","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-11-21T20:26:51Z","cross_cats_sorted":["astro-ph.GA","astro-ph.SR"],"title_canon_sha256":"9fd760c1dea649e2bf23d8f5bd1c964aad608a9bd6b4500d868953737452562d","abstract_canon_sha256":"8240cd98812fd19dfc8ece8db81358d3d6768fd12104e49daaa695f8c0919587"},"schema_version":"1.0"},"canonical_sha256":"e39c2b81107ece920bfadc0985ca56753397f98471af226b84f4e75fea87810c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:37:19.905347Z","signature_b64":"xc3R3VoOP+N/Mqoyu7ulapUnokZRJpUZrxQiJsn7q0/8m+EdCrTW6w6UgCrWswoATUW0nS+dSv5kxIFpI+l1Bw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e39c2b81107ece920bfadc0985ca56753397f98471af226b84f4e75fea87810c","last_reissued_at":"2026-05-18T03:37:19.904752Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:37:19.904752Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1211.5131","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":"2026-05-18T03:37:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"idazLeHWVNS8k/8C33lc1Lv+CqHgd03jrOZj61UBEUnXUGKu1IJQuGEbx3ZPQ0CwLm/Y8dgenr55MAVZvl8UBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T09:07:39.467375Z"},"content_sha256":"bab8455ca4a7502a91557fb327e97e618751c3eebd0b3060b5b1abf9d94afad6","schema_version":"1.0","event_id":"sha256:bab8455ca4a7502a91557fb327e97e618751c3eebd0b3060b5b1abf9d94afad6"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:4OOCXAIQP3HJEC723QEYLSSWOU","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Optical Colors of Giant Elliptical Galaxies and their Metal-Rich Globular Clusters Indicate a Bottom-Heavy Initial Mass Function","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA","astro-ph.SR"],"primary_cat":"astro-ph.CO","authors_text":"Garching), J. M. Diederik Kruijssen (MPA, Paul Goudfrooij (STScI)","submitted_at":"2012-11-21T20:26:51Z","abstract_excerpt":"We report a systematic and statistically significant offset between the optical (g-z or B-I) colors of seven massive elliptical galaxies and the mean colors of their associated massive metal-rich globular clusters (GCs) in the sense that the parent galaxies are redder by 0.12-0.20 mag at a given galactocentric distance. However, spectroscopic indices in the blue indicate that the luminosity-weighted ages and metallicities of such galaxies are equal to that of their averaged massive metal-rich GCs at a given galactocentric distance, to within small uncertainties. The observed color differences "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1211.5131","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":"2026-05-18T03:37:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5xXRdT3hRRIEhuINPcA06mu4r5IN+cEEDRB4pWGhI3BJ7EydyfN97ZmcAJKk8pAHIjgAArEVllcENoodrKsCDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T09:07:39.468070Z"},"content_sha256":"e091d2249d987862229e79a6631df47ada3b116c64aff1203ec29312ae35a905","schema_version":"1.0","event_id":"sha256:e091d2249d987862229e79a6631df47ada3b116c64aff1203ec29312ae35a905"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/4OOCXAIQP3HJEC723QEYLSSWOU/bundle.json","state_url":"https://pith.science/pith/4OOCXAIQP3HJEC723QEYLSSWOU/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/4OOCXAIQP3HJEC723QEYLSSWOU/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":"2026-05-26T09:07:39Z","links":{"resolver":"https://pith.science/pith/4OOCXAIQP3HJEC723QEYLSSWOU","bundle":"https://pith.science/pith/4OOCXAIQP3HJEC723QEYLSSWOU/bundle.json","state":"https://pith.science/pith/4OOCXAIQP3HJEC723QEYLSSWOU/state.json","well_known_bundle":"https://pith.science/.well-known/pith/4OOCXAIQP3HJEC723QEYLSSWOU/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:4OOCXAIQP3HJEC723QEYLSSWOU","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":"8240cd98812fd19dfc8ece8db81358d3d6768fd12104e49daaa695f8c0919587","cross_cats_sorted":["astro-ph.GA","astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-11-21T20:26:51Z","title_canon_sha256":"9fd760c1dea649e2bf23d8f5bd1c964aad608a9bd6b4500d868953737452562d"},"schema_version":"1.0","source":{"id":"1211.5131","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1211.5131","created_at":"2026-05-18T03:37:19Z"},{"alias_kind":"arxiv_version","alias_value":"1211.5131v2","created_at":"2026-05-18T03:37:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1211.5131","created_at":"2026-05-18T03:37:19Z"},{"alias_kind":"pith_short_12","alias_value":"4OOCXAIQP3HJ","created_at":"2026-05-18T12:26:53Z"},{"alias_kind":"pith_short_16","alias_value":"4OOCXAIQP3HJEC72","created_at":"2026-05-18T12:26:53Z"},{"alias_kind":"pith_short_8","alias_value":"4OOCXAIQ","created_at":"2026-05-18T12:26:53Z"}],"graph_snapshots":[{"event_id":"sha256:e091d2249d987862229e79a6631df47ada3b116c64aff1203ec29312ae35a905","target":"graph","created_at":"2026-05-18T03:37:19Z","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 report a systematic and statistically significant offset between the optical (g-z or B-I) colors of seven massive elliptical galaxies and the mean colors of their associated massive metal-rich globular clusters (GCs) in the sense that the parent galaxies are redder by 0.12-0.20 mag at a given galactocentric distance. However, spectroscopic indices in the blue indicate that the luminosity-weighted ages and metallicities of such galaxies are equal to that of their averaged massive metal-rich GCs at a given galactocentric distance, to within small uncertainties. The observed color differences ","authors_text":"Garching), J. M. Diederik Kruijssen (MPA, Paul Goudfrooij (STScI)","cross_cats":["astro-ph.GA","astro-ph.SR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-11-21T20:26:51Z","title":"The Optical Colors of Giant Elliptical Galaxies and their Metal-Rich Globular Clusters Indicate a Bottom-Heavy Initial Mass Function"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1211.5131","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:bab8455ca4a7502a91557fb327e97e618751c3eebd0b3060b5b1abf9d94afad6","target":"record","created_at":"2026-05-18T03:37:19Z","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":"8240cd98812fd19dfc8ece8db81358d3d6768fd12104e49daaa695f8c0919587","cross_cats_sorted":["astro-ph.GA","astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-11-21T20:26:51Z","title_canon_sha256":"9fd760c1dea649e2bf23d8f5bd1c964aad608a9bd6b4500d868953737452562d"},"schema_version":"1.0","source":{"id":"1211.5131","kind":"arxiv","version":2}},"canonical_sha256":"e39c2b81107ece920bfadc0985ca56753397f98471af226b84f4e75fea87810c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e39c2b81107ece920bfadc0985ca56753397f98471af226b84f4e75fea87810c","first_computed_at":"2026-05-18T03:37:19.904752Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:37:19.904752Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"xc3R3VoOP+N/Mqoyu7ulapUnokZRJpUZrxQiJsn7q0/8m+EdCrTW6w6UgCrWswoATUW0nS+dSv5kxIFpI+l1Bw==","signature_status":"signed_v1","signed_at":"2026-05-18T03:37:19.905347Z","signed_message":"canonical_sha256_bytes"},"source_id":"1211.5131","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:bab8455ca4a7502a91557fb327e97e618751c3eebd0b3060b5b1abf9d94afad6","sha256:e091d2249d987862229e79a6631df47ada3b116c64aff1203ec29312ae35a905"],"state_sha256":"4c4010a05c8b36e7a852b11b0384f0c7666e1f4c6f6bf76fcf2aeb1055521e62"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+xSJOLrl0+5Glm9rxYzR6tUZL1iSPirSnX7rO87xntBXMz3MRh6jp6B936VSuH/mSN76oJqIztrhsroUa+VDAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T09:07:39.471950Z","bundle_sha256":"a1823168a643cecc70a13a1e8d655e188be782f68d704612c6de022b1f63920c"}}