{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:7QJN2UIPL7PHNRFVABM2WFVOWK","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":"92ae455799b167bbdde0cc7f81ecafc833b9be454c709cb7014faf1f103b3850","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2012-09-17T20:07:03Z","title_canon_sha256":"232f846dc19c941e57f9290e198e068a29196f28b9c7a8fb53a933977a5b1f75"},"schema_version":"1.0","source":{"id":"1209.3787","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1209.3787","created_at":"2026-05-18T01:54:27Z"},{"alias_kind":"arxiv_version","alias_value":"1209.3787v2","created_at":"2026-05-18T01:54:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1209.3787","created_at":"2026-05-18T01:54:27Z"},{"alias_kind":"pith_short_12","alias_value":"7QJN2UIPL7PH","created_at":"2026-05-18T12:26:58Z"},{"alias_kind":"pith_short_16","alias_value":"7QJN2UIPL7PHNRFV","created_at":"2026-05-18T12:26:58Z"},{"alias_kind":"pith_short_8","alias_value":"7QJN2UIP","created_at":"2026-05-18T12:26:58Z"}],"graph_snapshots":[{"event_id":"sha256:b55f45fa27d0cc40bf7e737fde1e82bf27a4ff8fb195e756b182c52a848dc714","target":"graph","created_at":"2026-05-18T01:54:27Z","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":"The aim of this work is to characterize the stellar population between Earth and the Orion A molecular cloud where the well known star formation benchmark Orion Nebula Cluster (ONC) is embedded. We use the denser regions the Orion A cloud to block optical background light, effectively isolating the stellar population in front of it. We then use a multi-wavelength observational approach to characterize the cloud's foreground stellar population. We find that there is a rich stellar population in front of the Orion A cloud, from B-stars to M-stars, with a distinct 1) spatial distribution, 2) lumi","authors_text":"H. Bouy, J. Alves","cross_cats":["astro-ph.SR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2012-09-17T20:07:03Z","title":"Orion Revisited - I. The massive cluster in front of the Orion Nebula Cluster"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1209.3787","kind":"arxiv","version":2},"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:ba9eec6c6b544e902dc3eb1f02e3e68396fc10707106062d5a01e11d0cfc72fe","target":"record","created_at":"2026-05-18T01:54:27Z","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":"92ae455799b167bbdde0cc7f81ecafc833b9be454c709cb7014faf1f103b3850","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2012-09-17T20:07:03Z","title_canon_sha256":"232f846dc19c941e57f9290e198e068a29196f28b9c7a8fb53a933977a5b1f75"},"schema_version":"1.0","source":{"id":"1209.3787","kind":"arxiv","version":2}},"canonical_sha256":"fc12dd510f5fde76c4b50059ab16aeb2aaa7cf955e5f1d99ae738aab530b084b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"fc12dd510f5fde76c4b50059ab16aeb2aaa7cf955e5f1d99ae738aab530b084b","first_computed_at":"2026-05-18T01:54:27.179397Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:54:27.179397Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"pbb7YTSOKvlwpt/f6Y2s7HnN9fo6Nt5a/PLvcR5zu/22Kyjf2fbh3+0BMaGYR9eCziQ/Qpe90pZTtjDJvMIzDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:54:27.180077Z","signed_message":"canonical_sha256_bytes"},"source_id":"1209.3787","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ba9eec6c6b544e902dc3eb1f02e3e68396fc10707106062d5a01e11d0cfc72fe","sha256:b55f45fa27d0cc40bf7e737fde1e82bf27a4ff8fb195e756b182c52a848dc714"],"state_sha256":"5733c3cf441fbac98df2bce0eb998ec0ddd997803bdc1d99960b8c48daec1947"}