{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:N6I5HMXUG22NSASHLVDJO6DDJR","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":"b0360fc3bf4c87af8f092959d87ff7d56ce249109125b6ae32e535cf7fe96965","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2023-04-04T13:37:18Z","title_canon_sha256":"e7594306a42ada59d97404c2b4260773b455cfb5ed3b4acd6179bda6b96021e7"},"schema_version":"1.0","source":{"id":"2304.01791","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2304.01791","created_at":"2026-07-05T06:02:25Z"},{"alias_kind":"arxiv_version","alias_value":"2304.01791v1","created_at":"2026-07-05T06:02:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2304.01791","created_at":"2026-07-05T06:02:25Z"},{"alias_kind":"pith_short_12","alias_value":"N6I5HMXUG22N","created_at":"2026-07-05T06:02:25Z"},{"alias_kind":"pith_short_16","alias_value":"N6I5HMXUG22NSASH","created_at":"2026-07-05T06:02:25Z"},{"alias_kind":"pith_short_8","alias_value":"N6I5HMXU","created_at":"2026-07-05T06:02:25Z"}],"graph_snapshots":[{"event_id":"sha256:10ed692f2bcbe534b22f5793a4763e7220ed620bf3eac2fd53031379b44e0f68","target":"graph","created_at":"2026-07-05T06:02:25Z","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/2304.01791/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Until recently it was thought that the nuclear stellar disc at the centre of our Galaxy was formed via quasi-continuous star formation over billions of years. However, an analysis of GALACTICNUCLEUS survey data indicates that >80% of the mass of the stellar disc formed at least 8 Gyr ago and about 5% roughly 1 Gyr ago. Our aim is to derive new constraints on the formation history of the nuclear stellar disc. We analysed a catalogue of HST/WFC3-IR observations of the Quintuplet cluster field. From this catalogue, we selected about 24000 field stars that probably belong to the nuclear stellar di","authors_text":"A. Gardini, A. Ghez, A. Mart\\'inez Arranz, A. T. Gallego-Calvente, E. Gallego-Cano, F. Nogueras-Lara, J. Lu, M. Cano-Gonz\\'alez, M. Hosek Jr, R. M. Rich, R. Schoedel, T. Do","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2023-04-04T13:37:18Z","title":"The formation history of our Galaxy's nuclear stellar disc constrained from HST observations of the Quintuplet field"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2304.01791","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:a9f6e5f4ee67fefeeb0054081d8ad4d9222e06273e0d71e5d7cd5de0bd92586b","target":"record","created_at":"2026-07-05T06:02:25Z","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":"b0360fc3bf4c87af8f092959d87ff7d56ce249109125b6ae32e535cf7fe96965","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2023-04-04T13:37:18Z","title_canon_sha256":"e7594306a42ada59d97404c2b4260773b455cfb5ed3b4acd6179bda6b96021e7"},"schema_version":"1.0","source":{"id":"2304.01791","kind":"arxiv","version":1}},"canonical_sha256":"6f91d3b2f436b4d902475d469778634c70b9cb595677803bf477864fe1f2d012","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6f91d3b2f436b4d902475d469778634c70b9cb595677803bf477864fe1f2d012","first_computed_at":"2026-07-05T06:02:25.916821Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T06:02:25.916821Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"njeSN3r/SB+1l72CYqYUx/T/spB/zep7b2DEJ3ehm0cxzm5li1AyMT3cRLqkQb+8xp6RleBCwNPto1UEYPUpCg==","signature_status":"signed_v1","signed_at":"2026-07-05T06:02:25.917237Z","signed_message":"canonical_sha256_bytes"},"source_id":"2304.01791","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a9f6e5f4ee67fefeeb0054081d8ad4d9222e06273e0d71e5d7cd5de0bd92586b","sha256:10ed692f2bcbe534b22f5793a4763e7220ed620bf3eac2fd53031379b44e0f68"],"state_sha256":"44c8cfe63a08e76b379df41beae67db1dee554693418dd658725a6ee056ca50c"}