{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:ZUYWZ2WH5A46K4V6AMYWB5YX7N","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":"c19494fe96dc9488bcc992efcec1c1461473235c33e03ab1d9bbd9ba8438435b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-05-23T14:39:34Z","title_canon_sha256":"7e5466f2e6fa6be766e9bdebce6ef71ad0379b28b77341aaea9f96b7cee5e65c"},"schema_version":"1.0","source":{"id":"1805.09198","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1805.09198","created_at":"2026-05-18T00:03:48Z"},{"alias_kind":"arxiv_version","alias_value":"1805.09198v1","created_at":"2026-05-18T00:03:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1805.09198","created_at":"2026-05-18T00:03:48Z"},{"alias_kind":"pith_short_12","alias_value":"ZUYWZ2WH5A46","created_at":"2026-05-18T12:33:07Z"},{"alias_kind":"pith_short_16","alias_value":"ZUYWZ2WH5A46K4V6","created_at":"2026-05-18T12:33:07Z"},{"alias_kind":"pith_short_8","alias_value":"ZUYWZ2WH","created_at":"2026-05-18T12:33:07Z"}],"graph_snapshots":[{"event_id":"sha256:0ca823cd98408f1e73c4bb980a261d7ddd4d9c9612194978de148027d401971f","target":"graph","created_at":"2026-05-18T00:03:48Z","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 develop and apply a model to quantify the global efficiency of radial orbit migration among stars in the Milky Way disk. This model parameterizes the possible star formation and enrichment histories, radial birth profiles, and combines them with a migration model that relates present-day orbital radii to birth radii through a Gaussian probability, broadening with age $\\tau$ as $\\sigma_\\mathrm{RM8}~\\sqrt{\\tau/8{~\\mathrm{Gyr}}}$. Guided by observations, we assume that stars are born with an initially tight age--metallicity relation at given radius, which becomes subsequently scrambled by radi","authors_text":"David W. Hogg, Hans-Walter Rix, Melissa K. Ness, Neige Frankel, Yuan-Sen Ting","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-05-23T14:39:34Z","title":"Measuring Radial Orbit Migration in the Milky Way Disk"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1805.09198","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:fa94e2932a4527f0ad573e45957746d261dd15c533bdb5b2d8e54724cedb30cf","target":"record","created_at":"2026-05-18T00:03:48Z","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":"c19494fe96dc9488bcc992efcec1c1461473235c33e03ab1d9bbd9ba8438435b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-05-23T14:39:34Z","title_canon_sha256":"7e5466f2e6fa6be766e9bdebce6ef71ad0379b28b77341aaea9f96b7cee5e65c"},"schema_version":"1.0","source":{"id":"1805.09198","kind":"arxiv","version":1}},"canonical_sha256":"cd316ceac7e839e572be033160f717fb74c7ee4b6f47396dedf9472dae44982c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"cd316ceac7e839e572be033160f717fb74c7ee4b6f47396dedf9472dae44982c","first_computed_at":"2026-05-18T00:03:48.765572Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:03:48.765572Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"hHQmJSQrSy39XyqlQ0Ydj2kF7wOB6yS8v167KGhUw7SoiKs/M614hcJrsOsRVEIYvKPXI7h/cGs3It/m5edhAA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:03:48.766048Z","signed_message":"canonical_sha256_bytes"},"source_id":"1805.09198","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:fa94e2932a4527f0ad573e45957746d261dd15c533bdb5b2d8e54724cedb30cf","sha256:0ca823cd98408f1e73c4bb980a261d7ddd4d9c9612194978de148027d401971f"],"state_sha256":"948e7c70a2a36d2fe47289ff65ddd547440fc3f272f9e44be926169b5f009746"}