{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:C4FNQGLCRWISNMDZRIV4TI2O3Y","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":"d289bda08a3566153b72adffb5649ed7f1cfe81333de02ecea3aefe24506f84e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2011-05-09T15:45:31Z","title_canon_sha256":"815cfa444b45aed492334db85e795f146ecc670e829db46438b8aeabf1fefe9b"},"schema_version":"1.0","source":{"id":"1105.1703","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1105.1703","created_at":"2026-05-18T02:02:02Z"},{"alias_kind":"arxiv_version","alias_value":"1105.1703v1","created_at":"2026-05-18T02:02:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1105.1703","created_at":"2026-05-18T02:02:02Z"},{"alias_kind":"pith_short_12","alias_value":"C4FNQGLCRWIS","created_at":"2026-05-18T12:26:24Z"},{"alias_kind":"pith_short_16","alias_value":"C4FNQGLCRWISNMDZ","created_at":"2026-05-18T12:26:24Z"},{"alias_kind":"pith_short_8","alias_value":"C4FNQGLC","created_at":"2026-05-18T12:26:24Z"}],"graph_snapshots":[{"event_id":"sha256:fa4e2d27d09ed9b02e312f8676df6388c83f08686f91b7b57b31a0df9e71fffa","target":"graph","created_at":"2026-05-18T02:02:02Z","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":"Our HST/NICMOS Pa survey of the Galactic center (GC) provides a uniform, panoramic, high-resolution map of stars and ionized diffuse gas in the central 416 arcmin^2 of the Galaxy. This survey was carried out with 144 HST orbits using two narrow-band filters at 1.87 and 1.90 micron in NICMOS Camera 3. In this paper, we describe in detail the data reduction and mosaicking procedures followed, including background level matching and astrometric corrections. We have detected ~570,000 near-IR sources and are able to quantify photometric uncertainties of the detections. The source detection limit va","authors_text":"A. Cotera (SETI), C. Lang (U of Iowa), D. Calzetti (UMASS), E. A. Mills (UCLA), G. Schneider (Steward Observatory), H. Dong (UMass), J. Mauerhan (SSC), M. R. Morris (UCLA), Q. D. Wang (UMass), S. Stolovy (SSC)","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2011-05-09T15:45:31Z","title":"HST Paschen-alpha Survey of the Galactic Center: Data Reduction and Products"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1105.1703","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":"sha256:5a5f24b1a3a49459e8e1d7eb917f392291a2e6d7e785195236e4771095b56d66","target":"record","created_at":"2026-05-18T02:02:02Z","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":"d289bda08a3566153b72adffb5649ed7f1cfe81333de02ecea3aefe24506f84e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2011-05-09T15:45:31Z","title_canon_sha256":"815cfa444b45aed492334db85e795f146ecc670e829db46438b8aeabf1fefe9b"},"schema_version":"1.0","source":{"id":"1105.1703","kind":"arxiv","version":1}},"canonical_sha256":"170ad819628d9126b0798a2bc9a34ede1651ef6cfb1801c3ee0a2d1198c0c21d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"170ad819628d9126b0798a2bc9a34ede1651ef6cfb1801c3ee0a2d1198c0c21d","first_computed_at":"2026-05-18T02:02:02.487330Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:02:02.487330Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"VIUTyxo7GT63eKdDuLhItsSy5zWB5F3WMsJUnyz7oYz8Ba3Vs9+GWDdqh+y1w2jeU8dMevVEedeAtj5qWi0KCw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:02:02.488047Z","signed_message":"canonical_sha256_bytes"},"source_id":"1105.1703","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5a5f24b1a3a49459e8e1d7eb917f392291a2e6d7e785195236e4771095b56d66","sha256:fa4e2d27d09ed9b02e312f8676df6388c83f08686f91b7b57b31a0df9e71fffa"],"state_sha256":"53d29c88ceb9b0b858fff9cd5f6cb97fba118df584be39c822aeaecace3b112c"}