{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:IFPRIDVLF24KSS7RARGILT5I6M","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":"e08d51f960c7294669598c824a4d892b1d12c4f9fcc9f67d420fdb14f5ec446d","cross_cats_sorted":["astro-ph.HE","astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-10-04T18:00:01Z","title_canon_sha256":"6e2ac22d8760e5504598fa6e5cfca8246609d655c31c9912d3396211b47de3c4"},"schema_version":"1.0","source":{"id":"1710.01731","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1710.01731","created_at":"2026-05-18T00:30:40Z"},{"alias_kind":"arxiv_version","alias_value":"1710.01731v1","created_at":"2026-05-18T00:30:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1710.01731","created_at":"2026-05-18T00:30:40Z"},{"alias_kind":"pith_short_12","alias_value":"IFPRIDVLF24K","created_at":"2026-05-18T12:31:21Z"},{"alias_kind":"pith_short_16","alias_value":"IFPRIDVLF24KSS7R","created_at":"2026-05-18T12:31:21Z"},{"alias_kind":"pith_short_8","alias_value":"IFPRIDVL","created_at":"2026-05-18T12:31:21Z"}],"graph_snapshots":[{"event_id":"sha256:99d77722e80ca99e0de0154acb276520de3e7da16f65679dc9ca1cb107f9d0eb","target":"graph","created_at":"2026-05-18T00:30:40Z","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 young cluster NGC 6231 (stellar ages ~2-7 Myr) is observed shortly after star-formation activity has ceased. Using the catalog of 2148 probable cluster members obtained from Chandra, VVV, and optical surveys (Paper I), we examine the cluster's spatial structure and dynamical state. The spatial distribution of stars is remarkably well fit by an isothermal sphere with moderate elongation, while other commonly used models like Plummer spheres, multivariate normal distributions, or power-law models are poor fits. The cluster has a core radius of $1.2\\pm0.1$ pc and a central density of ~200 sta","authors_text":"1, 1), 2), 2) ((1) Millenium Institute of Astrophysics, (2) Universidad de Valpara\\'iso, (3) Pennsylvania State University, (4) McMaster University, (5) Warsaw University Astronomical Observatory), Alison Sills (4), Eric D. Feigelson (3, Jordanka Borissova (1, Konstantin V. Getman (3), Mariusz Gromadzki (5, Michael A. Kuhn (1, Nicol\\'as Medina (1, Radostin Kurtev (1","cross_cats":["astro-ph.HE","astro-ph.SR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-10-04T18:00:01Z","title":"The Structure of the Young Star Cluster NGC 6231. II. Structure, Formation, and Fate"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1710.01731","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":"sha256:0ce135d18a6772cb0d01e7e4ed5a55cb0cd1e97491538e0bc1a6934ee25b2579","target":"record","created_at":"2026-05-18T00:30:40Z","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":"e08d51f960c7294669598c824a4d892b1d12c4f9fcc9f67d420fdb14f5ec446d","cross_cats_sorted":["astro-ph.HE","astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-10-04T18:00:01Z","title_canon_sha256":"6e2ac22d8760e5504598fa6e5cfca8246609d655c31c9912d3396211b47de3c4"},"schema_version":"1.0","source":{"id":"1710.01731","kind":"arxiv","version":1}},"canonical_sha256":"415f140eab2eb8a94bf1044c85cfa8f33384f571377df9e7ae1aa7db0712c2e4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"415f140eab2eb8a94bf1044c85cfa8f33384f571377df9e7ae1aa7db0712c2e4","first_computed_at":"2026-05-18T00:30:40.799675Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:30:40.799675Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"olVWRzQGtsxMuoYn12Lf6mZxIJwcbU3CXHwZh3nokbZzAZP6pAEAmJErFwxiqJsqCIHi7UtJhOfDc/Ea2wVKBA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:30:40.800269Z","signed_message":"canonical_sha256_bytes"},"source_id":"1710.01731","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0ce135d18a6772cb0d01e7e4ed5a55cb0cd1e97491538e0bc1a6934ee25b2579","sha256:99d77722e80ca99e0de0154acb276520de3e7da16f65679dc9ca1cb107f9d0eb"],"state_sha256":"406541bc105d59f867c304eef3a6b765fea29cdca4534a984ee20f67d4776f4c"}