{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:FH5OEIFF4LXMULQVLWQLIAB66W","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":"53a7f932bef2a584cf52a45de82c7f25f7846df71fe1fcc71bc051bfc802ceeb","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2019-02-14T10:55:39Z","title_canon_sha256":"80559ebb83c81080728237e7ae04f576463db3677246314a79ed1fa416d91379"},"schema_version":"1.0","source":{"id":"1902.05299","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1902.05299","created_at":"2026-05-17T23:49:39Z"},{"alias_kind":"arxiv_version","alias_value":"1902.05299v1","created_at":"2026-05-17T23:49:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1902.05299","created_at":"2026-05-17T23:49:39Z"},{"alias_kind":"pith_short_12","alias_value":"FH5OEIFF4LXM","created_at":"2026-05-18T12:33:15Z"},{"alias_kind":"pith_short_16","alias_value":"FH5OEIFF4LXMULQV","created_at":"2026-05-18T12:33:15Z"},{"alias_kind":"pith_short_8","alias_value":"FH5OEIFF","created_at":"2026-05-18T12:33:15Z"}],"graph_snapshots":[{"event_id":"sha256:65c4e09ab2d27c6b8945bc3abfbd82533fbd3f95a7a8f9da7fec2b052451d6c1","target":"graph","created_at":"2026-05-17T23:49:39Z","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":"Stars like our Sun form in self-gravitating dense and cold structures within interstellar clouds, called pre-stellar cores. Although much is known about the physical structure of dense clouds just before and soon after the switch-on of a protostar, the central few thousand astronomical units (au) of pre-stellar cores are unexplored. It is within these central regions that stellar systems assemble and fragmentation may take place, with the consequent formation of binaries and multiple systems. We present ALMA Band 6 observations (ACA and 12m array) of the dust continuum emission of the 8 Msun p","authors_text":"Ana Chacon-Tanarro, Bo Zhao, Daniele Galli, Eric Keto, Jaime E. Pineda, Malcolm C. Walmsley, Marco Padovani, Mario Tafalla, Paola Caselli, Rachel Friesen, Tyler L. Bourke","cross_cats":["astro-ph.GA"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2019-02-14T10:55:39Z","title":"The central 1000 AU of a pre-stellar core revealed with ALMA. I. 1.3 mm continuum observations"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1902.05299","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":"sha256:9a83ff1f956a01d3ba05afa0bb6f66fd9fd2fd9f351bc36aa926c2756684726b","target":"record","created_at":"2026-05-17T23:49:39Z","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":"53a7f932bef2a584cf52a45de82c7f25f7846df71fe1fcc71bc051bfc802ceeb","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2019-02-14T10:55:39Z","title_canon_sha256":"80559ebb83c81080728237e7ae04f576463db3677246314a79ed1fa416d91379"},"schema_version":"1.0","source":{"id":"1902.05299","kind":"arxiv","version":1}},"canonical_sha256":"29fae220a5e2eeca2e155da0b4003ef5b4b5487f3c326de82aa94a853d35333a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"29fae220a5e2eeca2e155da0b4003ef5b4b5487f3c326de82aa94a853d35333a","first_computed_at":"2026-05-17T23:49:39.066816Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:49:39.066816Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"6AruUuzkfgq5qqS9/V2DvHCdyViIzOUECIZsKK/ZnaXpAKkFqU+y9nq9fEBdit2kLpV5vsAKME/mk5CdbWWvCQ==","signature_status":"signed_v1","signed_at":"2026-05-17T23:49:39.067391Z","signed_message":"canonical_sha256_bytes"},"source_id":"1902.05299","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9a83ff1f956a01d3ba05afa0bb6f66fd9fd2fd9f351bc36aa926c2756684726b","sha256:65c4e09ab2d27c6b8945bc3abfbd82533fbd3f95a7a8f9da7fec2b052451d6c1"],"state_sha256":"6ba1162373f56b8323be61364ca9a357bf4bb0986fafe5e5437b1872a69e8ead"}