{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2008:3DS5CM5K5YDR735QX62KAMQ5HX","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":"b721eba0ee0bd879891a621df06fb25fd253503f47523a37659024e290a7e00f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-03-24T03:56:53Z","title_canon_sha256":"237ab259503c34182afcb812cf7d5019e391a29e53f486a58d6144eb9d8d6c45"},"schema_version":"1.0","source":{"id":"0803.3358","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0803.3358","created_at":"2026-05-18T02:35:23Z"},{"alias_kind":"arxiv_version","alias_value":"0803.3358v1","created_at":"2026-05-18T02:35:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0803.3358","created_at":"2026-05-18T02:35:23Z"},{"alias_kind":"pith_short_12","alias_value":"3DS5CM5K5YDR","created_at":"2026-05-18T12:25:56Z"},{"alias_kind":"pith_short_16","alias_value":"3DS5CM5K5YDR735Q","created_at":"2026-05-18T12:25:56Z"},{"alias_kind":"pith_short_8","alias_value":"3DS5CM5K","created_at":"2026-05-18T12:25:56Z"}],"graph_snapshots":[{"event_id":"sha256:2392bde000e4e0c979f2d0abd087ebcc3810c603d690aab15d6fcf1217f03bc8","target":"graph","created_at":"2026-05-18T02:35:23Z","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 Spitzer-IRAC, NOAO 2.1meter-Flamingos, Keck-NIRC, and FCRAO-SEQUOIA observations of the massive star forming complex S254-S258, covering an area of 25x20 arc-minutes. Using a combination of the IRAC and NIR data, we identify and classify the young stellar objects (YSO) in the complex. We detect 510 sources with near or mid IR-excess, and we classify 87 Class I, and 165 Class II sources. The YSO are found in clusters surrounded by isolated YSO in a low-density distributed population. The ratio of clustered to total YSO is 0.8. We identify six new clusters in the complex. One of them,","authors_text":"C. Brunt, G. G. Fazio, J. L. Hora, L. Allen, L. Chavarria","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-03-24T03:56:53Z","title":"Spitzer observations of the Massive star forming complex S254-S258: structure and evolution"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0803.3358","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:e090e1fc22a70ad2dddce8df47e86fb357abc46ae9f42972ef126fa3e67f9193","target":"record","created_at":"2026-05-18T02:35:23Z","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":"b721eba0ee0bd879891a621df06fb25fd253503f47523a37659024e290a7e00f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-03-24T03:56:53Z","title_canon_sha256":"237ab259503c34182afcb812cf7d5019e391a29e53f486a58d6144eb9d8d6c45"},"schema_version":"1.0","source":{"id":"0803.3358","kind":"arxiv","version":1}},"canonical_sha256":"d8e5d133aaee071fefb0bfb4a0321d3de5b13ff3e98a95fe6b575cf9ed8b1644","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d8e5d133aaee071fefb0bfb4a0321d3de5b13ff3e98a95fe6b575cf9ed8b1644","first_computed_at":"2026-05-18T02:35:23.021333Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:35:23.021333Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"UE+UMKXxQevCMtMJ+2jn7Jw8U7+j/UYtyt2Nau4D7iSj8yhuIl0RWTQqilu/txiFzGeiHedtyri5huvDDnGyDw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:35:23.021690Z","signed_message":"canonical_sha256_bytes"},"source_id":"0803.3358","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e090e1fc22a70ad2dddce8df47e86fb357abc46ae9f42972ef126fa3e67f9193","sha256:2392bde000e4e0c979f2d0abd087ebcc3810c603d690aab15d6fcf1217f03bc8"],"state_sha256":"8e555bdc17292bd9968cb9930f7197b1fd19b13b5cb55d2f28a2bde4e9a3e8b5"}