{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:D75Z2DSFSLWZMR2O2GW3X3HVB6","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":"b1493d18038031ee0285c965cb971c629dce2964eee01be508248d219044bf88","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-06-14T18:00:43Z","title_canon_sha256":"7faf03caf6619f9d70998d9dfcecf58ce78b01f731ca7ab5a6557d7394d697a8"},"schema_version":"1.0","source":{"id":"1706.04623","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1706.04623","created_at":"2026-05-18T00:21:27Z"},{"alias_kind":"arxiv_version","alias_value":"1706.04623v2","created_at":"2026-05-18T00:21:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1706.04623","created_at":"2026-05-18T00:21:27Z"},{"alias_kind":"pith_short_12","alias_value":"D75Z2DSFSLWZ","created_at":"2026-05-18T12:31:10Z"},{"alias_kind":"pith_short_16","alias_value":"D75Z2DSFSLWZMR2O","created_at":"2026-05-18T12:31:10Z"},{"alias_kind":"pith_short_8","alias_value":"D75Z2DSF","created_at":"2026-05-18T12:31:10Z"}],"graph_snapshots":[{"event_id":"sha256:1514b9116ff5f42f60571bf9cdca28d6c1887578e5e45ec345f22ed7932ef174","target":"graph","created_at":"2026-05-18T00:21:27Z","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":"We present subarcsecond 1.3 mm continuum ALMA observations towards the Orion Molecular Cloud 1 South (OMC-1S) region, down to a spatial resolution of 74 AU, which reveal a total of 31 continuum sources. We also present subarcsecond 7 mm continuum VLA observations of the same region, which allow to further study fragmentation down to a spatial resolution of 40 AU. By applying a Mean Surface Density of Companions method we find a characteristic spatial scale at ~560 AU, and we use this spatial scale to define the boundary of 19 `cores' in OMC-1S as groupings of millimeter sources. We find an add","authors_text":"Aina Palau, Alvaro Sanchez-Monge, Asuncion Fuente, Benoit Commercon, Carlos G. Roman-Zuniga, Gemma Busquet, Josep M. Girart, Luis A. Zapata, Robert Estalella","cross_cats":["astro-ph.SR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-06-14T18:00:43Z","title":"Thermal Jeans fragmentation within 1000 AU in OMC-1S"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1706.04623","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:f5b07dfc2d55a30380c0a8e747ff6dfe648617c8ee7f82c102aaddd361fae211","target":"record","created_at":"2026-05-18T00:21:27Z","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":"b1493d18038031ee0285c965cb971c629dce2964eee01be508248d219044bf88","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-06-14T18:00:43Z","title_canon_sha256":"7faf03caf6619f9d70998d9dfcecf58ce78b01f731ca7ab5a6557d7394d697a8"},"schema_version":"1.0","source":{"id":"1706.04623","kind":"arxiv","version":2}},"canonical_sha256":"1ffb9d0e4592ed96474ed1adbbecf50fa00fef6482fe8ed3afc9acd7140aea07","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1ffb9d0e4592ed96474ed1adbbecf50fa00fef6482fe8ed3afc9acd7140aea07","first_computed_at":"2026-05-18T00:21:27.865962Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:21:27.865962Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ssQT7kOmwbyntI/MKqj84Sa7FKjT+rnshq4YUBFqmqQt7T8e615LXbbYZ12FU5d763T3nScTSYkUuczAnlmxDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:21:27.866658Z","signed_message":"canonical_sha256_bytes"},"source_id":"1706.04623","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f5b07dfc2d55a30380c0a8e747ff6dfe648617c8ee7f82c102aaddd361fae211","sha256:1514b9116ff5f42f60571bf9cdca28d6c1887578e5e45ec345f22ed7932ef174"],"state_sha256":"d138a61d891af95aeeff1caaed7a0ad2b5f0428e991e174258d3205cda8eb11a"}