{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2002:SAYLPSYB3HNDUZ6FH6YSH7643E","short_pith_number":"pith:SAYLPSYB","canonical_record":{"source":{"id":"astro-ph/0203509","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2002-03-28T18:19:25Z","cross_cats_sorted":[],"title_canon_sha256":"f75240047f432f529f2a1cc4fec427d6a5c94f57e644f01b93c78b610d631900","abstract_canon_sha256":"0288ea20452f40b651047131659a378e2c4336089a69b7da748aaf3e4e2521fc"},"schema_version":"1.0"},"canonical_sha256":"9030b7cb01d9da3a67c53fb123ffdcd9103e2bf545b60ea08fbecb0a3b926801","source":{"kind":"arxiv","id":"astro-ph/0203509","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0203509","created_at":"2026-05-18T03:57:01Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0203509v1","created_at":"2026-05-18T03:57:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0203509","created_at":"2026-05-18T03:57:01Z"},{"alias_kind":"pith_short_12","alias_value":"SAYLPSYB3HND","created_at":"2026-05-18T12:25:51Z"},{"alias_kind":"pith_short_16","alias_value":"SAYLPSYB3HNDUZ6F","created_at":"2026-05-18T12:25:51Z"},{"alias_kind":"pith_short_8","alias_value":"SAYLPSYB","created_at":"2026-05-18T12:25:51Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2002:SAYLPSYB3HNDUZ6FH6YSH7643E","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/0203509","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2002-03-28T18:19:25Z","cross_cats_sorted":[],"title_canon_sha256":"f75240047f432f529f2a1cc4fec427d6a5c94f57e644f01b93c78b610d631900","abstract_canon_sha256":"0288ea20452f40b651047131659a378e2c4336089a69b7da748aaf3e4e2521fc"},"schema_version":"1.0"},"canonical_sha256":"9030b7cb01d9da3a67c53fb123ffdcd9103e2bf545b60ea08fbecb0a3b926801","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:57:01.339038Z","signature_b64":"9umf8GmfYUw5Nyy0++bJxRzSaIi9Y9UP9EKwiSMfAqHzmRRM8LwAPKugiC/CNowpkmKze31xubbjMTVrgyH7BQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9030b7cb01d9da3a67c53fb123ffdcd9103e2bf545b60ea08fbecb0a3b926801","last_reissued_at":"2026-05-18T03:57:01.338272Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:57:01.338272Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/0203509","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":"2026-05-18T03:57:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/Vb1SfO/g2tKQh4bB72fDjnXX21XTvm0aFLLtmJtbpPgUxYhtNKZxW82Wqhu2Yi6CHuGqSCEdt4H0epyjspVAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T22:51:41.861626Z"},"content_sha256":"190d95111db38b2db7ae0b749e28fefc78f488a5b87ffc658dcf4606aa33901c","schema_version":"1.0","event_id":"sha256:190d95111db38b2db7ae0b749e28fefc78f488a5b87ffc658dcf4606aa33901c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2002:SAYLPSYB3HNDUZ6FH6YSH7643E","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Photometric Plane of Elliptical Galaxies","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Alister W. Graham","submitted_at":"2002-03-28T18:19:25Z","abstract_excerpt":"The Sersic r^(1/n) index n of an elliptical galaxy (or bulge) has recently been shown to correlate strongly (r=0.8) with a galaxy's central velocity dispersion. This index could therefore prove extremely useful and cost-effective (in terms of both telescope time and data reduction) for many fields of extragalactic research. It is a purely photometric quantity which apparently not only traces the mass of a bulge but has additionally been shown to reflect the degree of bulge concentration. This paper explores the affect of replacing the central velocity dispersion term in the Fundamental Plane w"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0203509","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":"2026-05-18T03:57:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"e+5Ejp3fl7BT6gNZNxlK0qwqBgGiJGdK/4F+tWDGcQ/guHh3aZduA5OodqMZmQuk5Sr0oFp1wqGqcAgt+cfBAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T22:51:41.862082Z"},"content_sha256":"7a8ca487eb771cc8d730d3c854cd074ef22879bd105e691a9ecce54d671c5e00","schema_version":"1.0","event_id":"sha256:7a8ca487eb771cc8d730d3c854cd074ef22879bd105e691a9ecce54d671c5e00"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/SAYLPSYB3HNDUZ6FH6YSH7643E/bundle.json","state_url":"https://pith.science/pith/SAYLPSYB3HNDUZ6FH6YSH7643E/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/SAYLPSYB3HNDUZ6FH6YSH7643E/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":"2026-05-25T22:51:41Z","links":{"resolver":"https://pith.science/pith/SAYLPSYB3HNDUZ6FH6YSH7643E","bundle":"https://pith.science/pith/SAYLPSYB3HNDUZ6FH6YSH7643E/bundle.json","state":"https://pith.science/pith/SAYLPSYB3HNDUZ6FH6YSH7643E/state.json","well_known_bundle":"https://pith.science/.well-known/pith/SAYLPSYB3HNDUZ6FH6YSH7643E/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2002:SAYLPSYB3HNDUZ6FH6YSH7643E","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":"0288ea20452f40b651047131659a378e2c4336089a69b7da748aaf3e4e2521fc","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2002-03-28T18:19:25Z","title_canon_sha256":"f75240047f432f529f2a1cc4fec427d6a5c94f57e644f01b93c78b610d631900"},"schema_version":"1.0","source":{"id":"astro-ph/0203509","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0203509","created_at":"2026-05-18T03:57:01Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0203509v1","created_at":"2026-05-18T03:57:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0203509","created_at":"2026-05-18T03:57:01Z"},{"alias_kind":"pith_short_12","alias_value":"SAYLPSYB3HND","created_at":"2026-05-18T12:25:51Z"},{"alias_kind":"pith_short_16","alias_value":"SAYLPSYB3HNDUZ6F","created_at":"2026-05-18T12:25:51Z"},{"alias_kind":"pith_short_8","alias_value":"SAYLPSYB","created_at":"2026-05-18T12:25:51Z"}],"graph_snapshots":[{"event_id":"sha256:7a8ca487eb771cc8d730d3c854cd074ef22879bd105e691a9ecce54d671c5e00","target":"graph","created_at":"2026-05-18T03:57:01Z","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":"The Sersic r^(1/n) index n of an elliptical galaxy (or bulge) has recently been shown to correlate strongly (r=0.8) with a galaxy's central velocity dispersion. This index could therefore prove extremely useful and cost-effective (in terms of both telescope time and data reduction) for many fields of extragalactic research. It is a purely photometric quantity which apparently not only traces the mass of a bulge but has additionally been shown to reflect the degree of bulge concentration. This paper explores the affect of replacing the central velocity dispersion term in the Fundamental Plane w","authors_text":"Alister W. Graham","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2002-03-28T18:19:25Z","title":"The Photometric Plane of Elliptical Galaxies"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0203509","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":"sha256:190d95111db38b2db7ae0b749e28fefc78f488a5b87ffc658dcf4606aa33901c","target":"record","created_at":"2026-05-18T03:57:01Z","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":"0288ea20452f40b651047131659a378e2c4336089a69b7da748aaf3e4e2521fc","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2002-03-28T18:19:25Z","title_canon_sha256":"f75240047f432f529f2a1cc4fec427d6a5c94f57e644f01b93c78b610d631900"},"schema_version":"1.0","source":{"id":"astro-ph/0203509","kind":"arxiv","version":1}},"canonical_sha256":"9030b7cb01d9da3a67c53fb123ffdcd9103e2bf545b60ea08fbecb0a3b926801","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9030b7cb01d9da3a67c53fb123ffdcd9103e2bf545b60ea08fbecb0a3b926801","first_computed_at":"2026-05-18T03:57:01.338272Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:57:01.338272Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"9umf8GmfYUw5Nyy0++bJxRzSaIi9Y9UP9EKwiSMfAqHzmRRM8LwAPKugiC/CNowpkmKze31xubbjMTVrgyH7BQ==","signature_status":"signed_v1","signed_at":"2026-05-18T03:57:01.339038Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0203509","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:190d95111db38b2db7ae0b749e28fefc78f488a5b87ffc658dcf4606aa33901c","sha256:7a8ca487eb771cc8d730d3c854cd074ef22879bd105e691a9ecce54d671c5e00"],"state_sha256":"f7701a265c882c5de47c8eb947cb4a6c1efc8c03b887797f32b40d24401f3a0b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ka+7JTKQb/rt1ULjUq7YxlIFwn7scyYbPBcskIDF02HGC7M3oj03nqBevvhvEu8kohMun6dCKUcoALZPbPVhDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T22:51:41.864926Z","bundle_sha256":"3355a0d55ab32b25a25568033d5022be27de7ac5b1c324915b4e6fb8eb9ebc5f"}}