{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:DAH2WMDWH4AUXZHFVB7L647AXP","short_pith_number":"pith:DAH2WMDW","canonical_record":{"source":{"id":"1202.5403","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-02-24T09:22:51Z","cross_cats_sorted":[],"title_canon_sha256":"11c8f3b00c009588f3a731ff9559a87f10633744c35db5f0c941e773582dcc95","abstract_canon_sha256":"00b09ce1ad28bbc0a282f1c8a51d1a023cd70394753c3685e4b700ac9b8a6c76"},"schema_version":"1.0"},"canonical_sha256":"180fab30763f014be4e5a87ebf73e0bbf854e24a04c0c4cdaf2f7dc130af2f53","source":{"kind":"arxiv","id":"1202.5403","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1202.5403","created_at":"2026-05-18T01:58:19Z"},{"alias_kind":"arxiv_version","alias_value":"1202.5403v1","created_at":"2026-05-18T01:58:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1202.5403","created_at":"2026-05-18T01:58:19Z"},{"alias_kind":"pith_short_12","alias_value":"DAH2WMDWH4AU","created_at":"2026-05-18T12:27:01Z"},{"alias_kind":"pith_short_16","alias_value":"DAH2WMDWH4AUXZHF","created_at":"2026-05-18T12:27:01Z"},{"alias_kind":"pith_short_8","alias_value":"DAH2WMDW","created_at":"2026-05-18T12:27:01Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:DAH2WMDWH4AUXZHFVB7L647AXP","target":"record","payload":{"canonical_record":{"source":{"id":"1202.5403","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-02-24T09:22:51Z","cross_cats_sorted":[],"title_canon_sha256":"11c8f3b00c009588f3a731ff9559a87f10633744c35db5f0c941e773582dcc95","abstract_canon_sha256":"00b09ce1ad28bbc0a282f1c8a51d1a023cd70394753c3685e4b700ac9b8a6c76"},"schema_version":"1.0"},"canonical_sha256":"180fab30763f014be4e5a87ebf73e0bbf854e24a04c0c4cdaf2f7dc130af2f53","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:58:19.978281Z","signature_b64":"NC0M8K1sp17A6TCepOuqqiFmB4t9x2B29hX2OWMp54Q5+VNfW3csHZDA8myMOpeNtq2MB1XO61TxNngQrqjODA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"180fab30763f014be4e5a87ebf73e0bbf854e24a04c0c4cdaf2f7dc130af2f53","last_reissued_at":"2026-05-18T01:58:19.977842Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:58:19.977842Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1202.5403","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":"2026-05-18T01:58:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CumYaBQ2hHpyaeptkDx9XwjkXD23YHf++tvvSin3ew9JPEKAgVe+yHrDko8GTORimayeb04iU0Gi2vliqhEZCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T03:06:12.279409Z"},"content_sha256":"5b2bdbf72b07bdc4aa55c4ef7dba7c2bc68ff83743dfc54aaf54d1dce9aaff76","schema_version":"1.0","event_id":"sha256:5b2bdbf72b07bdc4aa55c4ef7dba7c2bc68ff83743dfc54aaf54d1dce9aaff76"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:DAH2WMDWH4AUXZHFVB7L647AXP","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Fast evolving size of early-type galaxies at z>2 and the role of dissipationless (dry) merging","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"A. Cimatti, C. Nipoti, P. Cassata","submitted_at":"2012-02-24T09:22:51Z","abstract_excerpt":"We present the analysis of a large sample of early-type galaxies (ETGs) at 0<z<3 aimed at tracing the cosmic evolution of their size and compare it with a model of pure dissipationless (dry) merging in the LambdaCDM framework. The effective radius R_e depends on stellar mass M as R_e(M) \\propto M}^{alpha} with alpha ~ 0.5 at all redshifts. The redshift evolution of the mass- or SDSS-normalized size can be reproduced as \\propto (1+z)^beta with beta ~ -1, with the most massive ETGs possibly showing the fastest evolutionary rate (beta ~ -1.4). This size evolution slows down significantly to beta "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1202.5403","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":"2026-05-18T01:58:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"A1bRh0THr0ZbWuQLysFtgj6uo7EE3eOOXcOcplaWJGo1MQ4HtebeCFY59q5HEDoHNRM4ZWgmDLRytCGhUZNEDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T03:06:12.279827Z"},"content_sha256":"6bfc1e886c2605b68e0a3d54866369ee83999a911a243d260bd73273d2aec544","schema_version":"1.0","event_id":"sha256:6bfc1e886c2605b68e0a3d54866369ee83999a911a243d260bd73273d2aec544"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/DAH2WMDWH4AUXZHFVB7L647AXP/bundle.json","state_url":"https://pith.science/pith/DAH2WMDWH4AUXZHFVB7L647AXP/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/DAH2WMDWH4AUXZHFVB7L647AXP/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":"2026-06-04T03:06:12Z","links":{"resolver":"https://pith.science/pith/DAH2WMDWH4AUXZHFVB7L647AXP","bundle":"https://pith.science/pith/DAH2WMDWH4AUXZHFVB7L647AXP/bundle.json","state":"https://pith.science/pith/DAH2WMDWH4AUXZHFVB7L647AXP/state.json","well_known_bundle":"https://pith.science/.well-known/pith/DAH2WMDWH4AUXZHFVB7L647AXP/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:DAH2WMDWH4AUXZHFVB7L647AXP","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":"00b09ce1ad28bbc0a282f1c8a51d1a023cd70394753c3685e4b700ac9b8a6c76","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-02-24T09:22:51Z","title_canon_sha256":"11c8f3b00c009588f3a731ff9559a87f10633744c35db5f0c941e773582dcc95"},"schema_version":"1.0","source":{"id":"1202.5403","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1202.5403","created_at":"2026-05-18T01:58:19Z"},{"alias_kind":"arxiv_version","alias_value":"1202.5403v1","created_at":"2026-05-18T01:58:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1202.5403","created_at":"2026-05-18T01:58:19Z"},{"alias_kind":"pith_short_12","alias_value":"DAH2WMDWH4AU","created_at":"2026-05-18T12:27:01Z"},{"alias_kind":"pith_short_16","alias_value":"DAH2WMDWH4AUXZHF","created_at":"2026-05-18T12:27:01Z"},{"alias_kind":"pith_short_8","alias_value":"DAH2WMDW","created_at":"2026-05-18T12:27:01Z"}],"graph_snapshots":[{"event_id":"sha256:6bfc1e886c2605b68e0a3d54866369ee83999a911a243d260bd73273d2aec544","target":"graph","created_at":"2026-05-18T01:58:19Z","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 present the analysis of a large sample of early-type galaxies (ETGs) at 0<z<3 aimed at tracing the cosmic evolution of their size and compare it with a model of pure dissipationless (dry) merging in the LambdaCDM framework. The effective radius R_e depends on stellar mass M as R_e(M) \\propto M}^{alpha} with alpha ~ 0.5 at all redshifts. The redshift evolution of the mass- or SDSS-normalized size can be reproduced as \\propto (1+z)^beta with beta ~ -1, with the most massive ETGs possibly showing the fastest evolutionary rate (beta ~ -1.4). This size evolution slows down significantly to beta ","authors_text":"A. Cimatti, C. Nipoti, P. Cassata","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-02-24T09:22:51Z","title":"Fast evolving size of early-type galaxies at z>2 and the role of dissipationless (dry) merging"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1202.5403","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":"sha256:5b2bdbf72b07bdc4aa55c4ef7dba7c2bc68ff83743dfc54aaf54d1dce9aaff76","target":"record","created_at":"2026-05-18T01:58:19Z","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":"00b09ce1ad28bbc0a282f1c8a51d1a023cd70394753c3685e4b700ac9b8a6c76","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-02-24T09:22:51Z","title_canon_sha256":"11c8f3b00c009588f3a731ff9559a87f10633744c35db5f0c941e773582dcc95"},"schema_version":"1.0","source":{"id":"1202.5403","kind":"arxiv","version":1}},"canonical_sha256":"180fab30763f014be4e5a87ebf73e0bbf854e24a04c0c4cdaf2f7dc130af2f53","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"180fab30763f014be4e5a87ebf73e0bbf854e24a04c0c4cdaf2f7dc130af2f53","first_computed_at":"2026-05-18T01:58:19.977842Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:58:19.977842Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"NC0M8K1sp17A6TCepOuqqiFmB4t9x2B29hX2OWMp54Q5+VNfW3csHZDA8myMOpeNtq2MB1XO61TxNngQrqjODA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:58:19.978281Z","signed_message":"canonical_sha256_bytes"},"source_id":"1202.5403","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5b2bdbf72b07bdc4aa55c4ef7dba7c2bc68ff83743dfc54aaf54d1dce9aaff76","sha256:6bfc1e886c2605b68e0a3d54866369ee83999a911a243d260bd73273d2aec544"],"state_sha256":"727fb91f0754cf0ec19ddd2cdd9b2a33ee9a4dce69fc71be52241a393566b23e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nIQG1ajG1rX91s7a3YAxd7MIUR3wo8eFs3NMHHQ7grr6AcRLRjCujXPrElfggNUWtcvq6H0RmsaTu2WzyJ58Cg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-04T03:06:12.281900Z","bundle_sha256":"2c6c6725b69d87a527d8f3775d222549b1ced0cb11f1c3c3f32eed0334dfb9b8"}}