{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2005:YHEBF6CXZ2SSZMSSTJ3WL7IGRN","short_pith_number":"pith:YHEBF6CX","canonical_record":{"source":{"id":"astro-ph/0506655","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2005-06-27T16:38:26Z","cross_cats_sorted":[],"title_canon_sha256":"f25d93fc1811f10ce898f58a9b120cff3dc4c8fa415f59c27ea221ce27cacf01","abstract_canon_sha256":"e4d6f2702d35eb86ce76a8851217dbf673a4da9553920d3b903ad0e38b1bc4e6"},"schema_version":"1.0"},"canonical_sha256":"c1c812f857cea52cb2529a7765fd068b79d337418f9a2408e30fe30390ddbc92","source":{"kind":"arxiv","id":"astro-ph/0506655","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0506655","created_at":"2026-07-04T16:52:41Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0506655v1","created_at":"2026-07-04T16:52:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0506655","created_at":"2026-07-04T16:52:41Z"},{"alias_kind":"pith_short_12","alias_value":"YHEBF6CXZ2SS","created_at":"2026-07-04T16:52:41Z"},{"alias_kind":"pith_short_16","alias_value":"YHEBF6CXZ2SSZMSS","created_at":"2026-07-04T16:52:41Z"},{"alias_kind":"pith_short_8","alias_value":"YHEBF6CX","created_at":"2026-07-04T16:52:41Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2005:YHEBF6CXZ2SSZMSSTJ3WL7IGRN","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/0506655","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2005-06-27T16:38:26Z","cross_cats_sorted":[],"title_canon_sha256":"f25d93fc1811f10ce898f58a9b120cff3dc4c8fa415f59c27ea221ce27cacf01","abstract_canon_sha256":"e4d6f2702d35eb86ce76a8851217dbf673a4da9553920d3b903ad0e38b1bc4e6"},"schema_version":"1.0"},"canonical_sha256":"c1c812f857cea52cb2529a7765fd068b79d337418f9a2408e30fe30390ddbc92","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T16:52:41.525600Z","signature_b64":"pza7NRPRuWOb1Ukvoo4/45jZKFiZ/jIv0nUj2h4doyvW5xu4QKQjgaTOS8U6jdax/IqL8IW/5PATvu9WZPiqDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c1c812f857cea52cb2529a7765fd068b79d337418f9a2408e30fe30390ddbc92","last_reissued_at":"2026-07-04T16:52:41.525109Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T16:52:41.525109Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/0506655","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":"2026-07-04T16:52:41Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kCRF+Q+NB3+D7bteeRa0t9f/QJFZcYxtY7jD4AgJiT5iczeF2PRUlNMKB3LbASV0cST56gBSkKaXWdRX8udGCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-06T20:45:44.683826Z"},"content_sha256":"322fea7fd201c7478cb676f309ca991df287c257b4e4d2a6c23e907a9fe7a7fa","schema_version":"1.0","event_id":"sha256:322fea7fd201c7478cb676f309ca991df287c257b4e4d2a6c23e907a9fe7a7fa"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2005:YHEBF6CXZ2SSZMSSTJ3WL7IGRN","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The evolution of early-type galaxies at z~1 from the K20 survey","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"A. Cimatti, A. Renzini, A. Rettura, B. Lanzoni, E. Daddi, E. Pignatelli, G. Zamorani, J. Vernet, L. Ciotti, L. Pozzetti, M. Mignoli, P. Cassata, S. di Serego Alighieri","submitted_at":"2005-06-27T16:38:26Z","abstract_excerpt":"We have performed VLT spectroscopy of an almost complete sample of 18 early-type galaxies with 0.88 < z < 1.3 plus two at z=0.67, selected from the K20 survey, and derived the velocity dispersion for 15+2 of them. By combining these data with HST and VLT images, we study the Fundamental Plane (FP), the Faber-Jackson and the Kormendy relations at z~1, and compare them with the local ones. The FP at z~1 keeps a remarkably small scatter, and shows both an offset and a rotation, which we interpret in terms of evolution of the mass-to-light ratio, and possibly of the size. We show evidence that the"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0506655","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/astro-ph/0506655/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-04T16:52:41Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+3Q7hNojzHhEBvnqjAr2iqDImOEWtwO/Ma+2+nMmvMOSB0IhXEE8N6OggUNbGQeSke1FNOOQdMOiGadIunahAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-06T20:45:44.684196Z"},"content_sha256":"86d27a5fa64a01b74a16367872c74a11c428c4ef4b3ef4947c65459b02cdd3ff","schema_version":"1.0","event_id":"sha256:86d27a5fa64a01b74a16367872c74a11c428c4ef4b3ef4947c65459b02cdd3ff"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/YHEBF6CXZ2SSZMSSTJ3WL7IGRN/bundle.json","state_url":"https://pith.science/pith/YHEBF6CXZ2SSZMSSTJ3WL7IGRN/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/YHEBF6CXZ2SSZMSSTJ3WL7IGRN/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":"2026-07-06T20:45:44Z","links":{"resolver":"https://pith.science/pith/YHEBF6CXZ2SSZMSSTJ3WL7IGRN","bundle":"https://pith.science/pith/YHEBF6CXZ2SSZMSSTJ3WL7IGRN/bundle.json","state":"https://pith.science/pith/YHEBF6CXZ2SSZMSSTJ3WL7IGRN/state.json","well_known_bundle":"https://pith.science/.well-known/pith/YHEBF6CXZ2SSZMSSTJ3WL7IGRN/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2005:YHEBF6CXZ2SSZMSSTJ3WL7IGRN","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":"e4d6f2702d35eb86ce76a8851217dbf673a4da9553920d3b903ad0e38b1bc4e6","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2005-06-27T16:38:26Z","title_canon_sha256":"f25d93fc1811f10ce898f58a9b120cff3dc4c8fa415f59c27ea221ce27cacf01"},"schema_version":"1.0","source":{"id":"astro-ph/0506655","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0506655","created_at":"2026-07-04T16:52:41Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0506655v1","created_at":"2026-07-04T16:52:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0506655","created_at":"2026-07-04T16:52:41Z"},{"alias_kind":"pith_short_12","alias_value":"YHEBF6CXZ2SS","created_at":"2026-07-04T16:52:41Z"},{"alias_kind":"pith_short_16","alias_value":"YHEBF6CXZ2SSZMSS","created_at":"2026-07-04T16:52:41Z"},{"alias_kind":"pith_short_8","alias_value":"YHEBF6CX","created_at":"2026-07-04T16:52:41Z"}],"graph_snapshots":[{"event_id":"sha256:86d27a5fa64a01b74a16367872c74a11c428c4ef4b3ef4947c65459b02cdd3ff","target":"graph","created_at":"2026-07-04T16:52:41Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/astro-ph/0506655/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We have performed VLT spectroscopy of an almost complete sample of 18 early-type galaxies with 0.88 < z < 1.3 plus two at z=0.67, selected from the K20 survey, and derived the velocity dispersion for 15+2 of them. By combining these data with HST and VLT images, we study the Fundamental Plane (FP), the Faber-Jackson and the Kormendy relations at z~1, and compare them with the local ones. The FP at z~1 keeps a remarkably small scatter, and shows both an offset and a rotation, which we interpret in terms of evolution of the mass-to-light ratio, and possibly of the size. We show evidence that the","authors_text":"A. Cimatti, A. Renzini, A. Rettura, B. Lanzoni, E. Daddi, E. Pignatelli, G. Zamorani, J. Vernet, L. Ciotti, L. Pozzetti, M. Mignoli, P. Cassata, S. di Serego Alighieri","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2005-06-27T16:38:26Z","title":"The evolution of early-type galaxies at z~1 from the K20 survey"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0506655","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":"sha256:322fea7fd201c7478cb676f309ca991df287c257b4e4d2a6c23e907a9fe7a7fa","target":"record","created_at":"2026-07-04T16:52:41Z","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":"e4d6f2702d35eb86ce76a8851217dbf673a4da9553920d3b903ad0e38b1bc4e6","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2005-06-27T16:38:26Z","title_canon_sha256":"f25d93fc1811f10ce898f58a9b120cff3dc4c8fa415f59c27ea221ce27cacf01"},"schema_version":"1.0","source":{"id":"astro-ph/0506655","kind":"arxiv","version":1}},"canonical_sha256":"c1c812f857cea52cb2529a7765fd068b79d337418f9a2408e30fe30390ddbc92","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c1c812f857cea52cb2529a7765fd068b79d337418f9a2408e30fe30390ddbc92","first_computed_at":"2026-07-04T16:52:41.525109Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T16:52:41.525109Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"pza7NRPRuWOb1Ukvoo4/45jZKFiZ/jIv0nUj2h4doyvW5xu4QKQjgaTOS8U6jdax/IqL8IW/5PATvu9WZPiqDw==","signature_status":"signed_v1","signed_at":"2026-07-04T16:52:41.525600Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0506655","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:322fea7fd201c7478cb676f309ca991df287c257b4e4d2a6c23e907a9fe7a7fa","sha256:86d27a5fa64a01b74a16367872c74a11c428c4ef4b3ef4947c65459b02cdd3ff"],"state_sha256":"675d2f120a6defa2b2980dd6706f8ae454575646f12b597d88f20b575cfce1a7"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7vn6J6vGTDl+jfkR5cyBitcXybxzyf5vnQyhSWB4/wo1uSVu2FK8I84gwagkqxPyW2apVlkQNBtJ6y8rwkoCBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-06T20:45:44.686103Z","bundle_sha256":"349d3cffd8213d79cc4375ee46395da890ff41e191fb1843e966fd72c2a29068"}}