{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:WYS6CWGZHXFNXEF56XCLM4NP2X","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":"dea439fe8480f6e51f3f57fdbb1cb7f2a32a332fcde515b369242f5000b42ea9","cross_cats_sorted":["astro-ph.EP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2011-02-02T21:04:18Z","title_canon_sha256":"8fdce0226fe03d1eb2165b00fa7797c050083d65adf34a4bad4abf8a11bb6204"},"schema_version":"1.0","source":{"id":"1102.0565","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1102.0565","created_at":"2026-05-18T02:03:17Z"},{"alias_kind":"arxiv_version","alias_value":"1102.0565v1","created_at":"2026-05-18T02:03:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1102.0565","created_at":"2026-05-18T02:03:17Z"},{"alias_kind":"pith_short_12","alias_value":"WYS6CWGZHXFN","created_at":"2026-05-18T12:26:44Z"},{"alias_kind":"pith_short_16","alias_value":"WYS6CWGZHXFNXEF5","created_at":"2026-05-18T12:26:44Z"},{"alias_kind":"pith_short_8","alias_value":"WYS6CWGZ","created_at":"2026-05-18T12:26:44Z"}],"graph_snapshots":[{"event_id":"sha256:08721ad818dc254f219d5f5fea9450c27f80cebba7a1c72a8aab066028ed9100","target":"graph","created_at":"2026-05-18T02:03:17Z","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 a global study of low mass, young stellar object (YSO) surface densities (Sigma) in nearby (< 500 pc) star forming regions based on a comprehensive collection of Spitzer Space Telescope surveys. We show that the distribution of YSO surface densities is a smooth distribution, being adequately described by a lognormal function from a few to 10^3 YSOs per pc^2, with a peak at ~22 stars pc^-2. The observed lognormal Sigma is consistent with predictions of hierarchically structured star-formation at scales below 10 pc, arising from the molecular cloud structures. We do not find evidence ","authors_text":"Eli Bressert, Nate Bastian, Robert Gutermuth","cross_cats":["astro-ph.EP"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2011-02-02T21:04:18Z","title":"Do All Stars in the Solar Neighbourhood Form in Clusters?"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1102.0565","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:c903ef655c153075f6c707ae5cb21686364eaa547304eeefead390507975dda2","target":"record","created_at":"2026-05-18T02:03:17Z","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":"dea439fe8480f6e51f3f57fdbb1cb7f2a32a332fcde515b369242f5000b42ea9","cross_cats_sorted":["astro-ph.EP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2011-02-02T21:04:18Z","title_canon_sha256":"8fdce0226fe03d1eb2165b00fa7797c050083d65adf34a4bad4abf8a11bb6204"},"schema_version":"1.0","source":{"id":"1102.0565","kind":"arxiv","version":1}},"canonical_sha256":"b625e158d93dcadb90bdf5c4b671afd5c46cd7dc2ef5bbfecb9b22a226978778","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b625e158d93dcadb90bdf5c4b671afd5c46cd7dc2ef5bbfecb9b22a226978778","first_computed_at":"2026-05-18T02:03:17.367936Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:03:17.367936Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Ib/03pN3IVvUfxNL9A7r4EvpCnCYhKa4/ZMHW29FFMEpdJo3taAAvefoCYTXYB7zFPk6kll/Q+SDIK9Wei2WBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:03:17.368698Z","signed_message":"canonical_sha256_bytes"},"source_id":"1102.0565","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c903ef655c153075f6c707ae5cb21686364eaa547304eeefead390507975dda2","sha256:08721ad818dc254f219d5f5fea9450c27f80cebba7a1c72a8aab066028ed9100"],"state_sha256":"c3605f42783e3ce2c2190a9dbb21830966f5931555cb0889a31b55d6d239f635"}