{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:HZWKCCANA4FOBP5IVXMGUNXAPM","short_pith_number":"pith:HZWKCCAN","canonical_record":{"source":{"id":"1905.08432","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-05-21T03:41:44Z","cross_cats_sorted":[],"title_canon_sha256":"d6761640ca39bf968d94bcb0952a4bcfad5ce02ef591d1a0736f013de26ff63c","abstract_canon_sha256":"f12f8147ac16b80585a3e9fd4a13d8915800463483102d82af4283ecc160c65c"},"schema_version":"1.0"},"canonical_sha256":"3e6ca1080d070ae0bfa8add86a36e07b13df292c67f0fb4c0a5faba8036c29a2","source":{"kind":"arxiv","id":"1905.08432","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1905.08432","created_at":"2026-05-17T23:43:22Z"},{"alias_kind":"arxiv_version","alias_value":"1905.08432v1","created_at":"2026-05-17T23:43:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1905.08432","created_at":"2026-05-17T23:43:22Z"},{"alias_kind":"pith_short_12","alias_value":"HZWKCCANA4FO","created_at":"2026-05-18T12:33:18Z"},{"alias_kind":"pith_short_16","alias_value":"HZWKCCANA4FOBP5I","created_at":"2026-05-18T12:33:18Z"},{"alias_kind":"pith_short_8","alias_value":"HZWKCCAN","created_at":"2026-05-18T12:33:18Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:HZWKCCANA4FOBP5IVXMGUNXAPM","target":"record","payload":{"canonical_record":{"source":{"id":"1905.08432","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-05-21T03:41:44Z","cross_cats_sorted":[],"title_canon_sha256":"d6761640ca39bf968d94bcb0952a4bcfad5ce02ef591d1a0736f013de26ff63c","abstract_canon_sha256":"f12f8147ac16b80585a3e9fd4a13d8915800463483102d82af4283ecc160c65c"},"schema_version":"1.0"},"canonical_sha256":"3e6ca1080d070ae0bfa8add86a36e07b13df292c67f0fb4c0a5faba8036c29a2","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:43:22.925524Z","signature_b64":"LXxSBPQqzqxoTo1oOdL+z9wLs1jnzALMrJR9HFOOs67OJOjZV0ctsXlgnC9EDJx08Usyffhi4m5XbuylChLxAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3e6ca1080d070ae0bfa8add86a36e07b13df292c67f0fb4c0a5faba8036c29a2","last_reissued_at":"2026-05-17T23:43:22.924974Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:43:22.924974Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1905.08432","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":"2026-05-17T23:43:22Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"eeQU5RqKMwn0E/rznwREfx+PKGitpCWQYjRrpojmSuogDBpa3TSiFVl92UQxhDWIBRZ4S/Mq/sg9SfL+SGx6DQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-18T20:37:56.916241Z"},"content_sha256":"119345bd4cf435dcc32413c0b79e5a14e5d84e9758aac2afff7538c2d4b97eb6","schema_version":"1.0","event_id":"sha256:119345bd4cf435dcc32413c0b79e5a14e5d84e9758aac2afff7538c2d4b97eb6"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:HZWKCCANA4FOBP5IVXMGUNXAPM","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Formation of disc galaxies around z~2","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Ajit Kembhavi, Kanak Saha, Rupjyoti Gogoi, Somak Raychaudhury, Sonali Sachdeva","submitted_at":"2019-05-21T03:41:44Z","abstract_excerpt":"We present combined evolution of morphological and stellar properties of galaxies on the two sides of z=2 (2.0<z<4.0 and 1.5<z<2.0) in CDFS, with ground-based spectroscopic redshifts. We perform bulge-disc decomposition on their images in J and H filters, from the 3DHST Legacy Survey obtained using HST/WFC3. Combining morphological information with stellar properties, we provide a detailed account of the formation/growth of discs and spheroids around z~2. The fraction of 2-component (bulge+disc) systems increases from ~46% for z>2 to ~70% for z<2, compensating for the fall in population of pur"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1905.08432","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":"2026-05-17T23:43:22Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LRqMTGnzDjLb9RwFcxM9DWhJgPmwCeW6mvHt6CRT5cUvq3FvUxNgZnDDatQOEDd0jIRC7wsz4LtWvJayvf3GAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-18T20:37:56.916907Z"},"content_sha256":"402247805dbe6288b84cd39c742586a13f96d1f092e9cfc70cb5068b44b66cbe","schema_version":"1.0","event_id":"sha256:402247805dbe6288b84cd39c742586a13f96d1f092e9cfc70cb5068b44b66cbe"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/HZWKCCANA4FOBP5IVXMGUNXAPM/bundle.json","state_url":"https://pith.science/pith/HZWKCCANA4FOBP5IVXMGUNXAPM/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/HZWKCCANA4FOBP5IVXMGUNXAPM/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":"2026-05-18T20:37:56Z","links":{"resolver":"https://pith.science/pith/HZWKCCANA4FOBP5IVXMGUNXAPM","bundle":"https://pith.science/pith/HZWKCCANA4FOBP5IVXMGUNXAPM/bundle.json","state":"https://pith.science/pith/HZWKCCANA4FOBP5IVXMGUNXAPM/state.json","well_known_bundle":"https://pith.science/.well-known/pith/HZWKCCANA4FOBP5IVXMGUNXAPM/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:HZWKCCANA4FOBP5IVXMGUNXAPM","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":"f12f8147ac16b80585a3e9fd4a13d8915800463483102d82af4283ecc160c65c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-05-21T03:41:44Z","title_canon_sha256":"d6761640ca39bf968d94bcb0952a4bcfad5ce02ef591d1a0736f013de26ff63c"},"schema_version":"1.0","source":{"id":"1905.08432","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1905.08432","created_at":"2026-05-17T23:43:22Z"},{"alias_kind":"arxiv_version","alias_value":"1905.08432v1","created_at":"2026-05-17T23:43:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1905.08432","created_at":"2026-05-17T23:43:22Z"},{"alias_kind":"pith_short_12","alias_value":"HZWKCCANA4FO","created_at":"2026-05-18T12:33:18Z"},{"alias_kind":"pith_short_16","alias_value":"HZWKCCANA4FOBP5I","created_at":"2026-05-18T12:33:18Z"},{"alias_kind":"pith_short_8","alias_value":"HZWKCCAN","created_at":"2026-05-18T12:33:18Z"}],"graph_snapshots":[{"event_id":"sha256:402247805dbe6288b84cd39c742586a13f96d1f092e9cfc70cb5068b44b66cbe","target":"graph","created_at":"2026-05-17T23:43:22Z","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 combined evolution of morphological and stellar properties of galaxies on the two sides of z=2 (2.0<z<4.0 and 1.5<z<2.0) in CDFS, with ground-based spectroscopic redshifts. We perform bulge-disc decomposition on their images in J and H filters, from the 3DHST Legacy Survey obtained using HST/WFC3. Combining morphological information with stellar properties, we provide a detailed account of the formation/growth of discs and spheroids around z~2. The fraction of 2-component (bulge+disc) systems increases from ~46% for z>2 to ~70% for z<2, compensating for the fall in population of pur","authors_text":"Ajit Kembhavi, Kanak Saha, Rupjyoti Gogoi, Somak Raychaudhury, Sonali Sachdeva","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-05-21T03:41:44Z","title":"Formation of disc galaxies around z~2"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1905.08432","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":"sha256:119345bd4cf435dcc32413c0b79e5a14e5d84e9758aac2afff7538c2d4b97eb6","target":"record","created_at":"2026-05-17T23:43:22Z","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":"f12f8147ac16b80585a3e9fd4a13d8915800463483102d82af4283ecc160c65c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-05-21T03:41:44Z","title_canon_sha256":"d6761640ca39bf968d94bcb0952a4bcfad5ce02ef591d1a0736f013de26ff63c"},"schema_version":"1.0","source":{"id":"1905.08432","kind":"arxiv","version":1}},"canonical_sha256":"3e6ca1080d070ae0bfa8add86a36e07b13df292c67f0fb4c0a5faba8036c29a2","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3e6ca1080d070ae0bfa8add86a36e07b13df292c67f0fb4c0a5faba8036c29a2","first_computed_at":"2026-05-17T23:43:22.924974Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:43:22.924974Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"LXxSBPQqzqxoTo1oOdL+z9wLs1jnzALMrJR9HFOOs67OJOjZV0ctsXlgnC9EDJx08Usyffhi4m5XbuylChLxAQ==","signature_status":"signed_v1","signed_at":"2026-05-17T23:43:22.925524Z","signed_message":"canonical_sha256_bytes"},"source_id":"1905.08432","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:119345bd4cf435dcc32413c0b79e5a14e5d84e9758aac2afff7538c2d4b97eb6","sha256:402247805dbe6288b84cd39c742586a13f96d1f092e9cfc70cb5068b44b66cbe"],"state_sha256":"47e06b78317c28c1e20136d9fd7dcc685842243a716b0a21937ffe4311015048"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"N/1V84Ea9yYyuNzBj+bJQlax6SGR0NW5YMvJBHHNmXV0RXFySKZv6cy3bLPAevUulNPnXwbkxaW6P6t9gQlMDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-18T20:37:56.919049Z","bundle_sha256":"7d62e332676d519ca1aa9a04cb7430d4ec272c79af9055e455b59c6137256880"}}