{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:QOF4JZN2AGSEKUUGW2DOQFTGZI","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":"59cdea2326eacaa9e3cf442dbb620719ce94b5c8983edefdf0a37d73fb8e243b","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-01-04T22:35:57Z","title_canon_sha256":"3f23060c444017f95f9cb3fffc133fd1622f298e2508fa03c69a6f8c57aeac51"},"schema_version":"1.0","source":{"id":"1601.00692","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1601.00692","created_at":"2026-05-18T01:20:40Z"},{"alias_kind":"arxiv_version","alias_value":"1601.00692v2","created_at":"2026-05-18T01:20:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1601.00692","created_at":"2026-05-18T01:20:40Z"},{"alias_kind":"pith_short_12","alias_value":"QOF4JZN2AGSE","created_at":"2026-05-18T12:30:39Z"},{"alias_kind":"pith_short_16","alias_value":"QOF4JZN2AGSEKUUG","created_at":"2026-05-18T12:30:39Z"},{"alias_kind":"pith_short_8","alias_value":"QOF4JZN2","created_at":"2026-05-18T12:30:39Z"}],"graph_snapshots":[{"event_id":"sha256:30d7411cb62d81afba854399a00603d27a9f69341e0ef77e01b43d9a8f551cea","target":"graph","created_at":"2026-05-18T01:20:40Z","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":"We present a multiplicity study of all known protostars (94) in the Perseus molecular cloud from a Karl G. Jansky Very Large Array (VLA) survey at Ka-band (8 mm and 1 cm) and C-band (4 cm and 6.6 cm). The observed sample has a bolometric luminosity range between 0.1 L$_{\\odot}$ and $\\sim$33 L$_{\\odot}$, with a median of 0.7 L$_{\\odot}$. This multiplicity study is based on the Ka-band data, having a best resolution of $\\sim$0.065\" (15 AU) and separations out to $\\sim$43\" (10000 AU) can be probed. The overall multiplicity fraction (MF) is found to be of 0.40$\\pm$0.06 and the companion star fract","authors_text":"Carl Melis, Claire J. Chandler (NRAO), Dominique Segura-Cox (Illinois), John J. Tobin (Leiden), Kaitlin Kratter (Arizona), Laura Perez (NRAO/Bonn), Leslie W. Looney (Illinois), Michael M. Dunham (CfA), Robert J. Harris (Illinois), Sarah I. Sadavoy (MPIA), Zhi-Yun Li (Virginia)","cross_cats":["astro-ph.GA"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-01-04T22:35:57Z","title":"The VLA Nascent Disk and Multiplicity Survey of Perseus Protostars (VANDAM). II. Multiplicity of Protostars in the Perseus Molecular Cloud"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1601.00692","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":"sha256:56a6946c1112869a08afe979307a3ee47a075c936997b46b184fcfc42836d8ad","target":"record","created_at":"2026-05-18T01:20:40Z","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":"59cdea2326eacaa9e3cf442dbb620719ce94b5c8983edefdf0a37d73fb8e243b","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-01-04T22:35:57Z","title_canon_sha256":"3f23060c444017f95f9cb3fffc133fd1622f298e2508fa03c69a6f8c57aeac51"},"schema_version":"1.0","source":{"id":"1601.00692","kind":"arxiv","version":2}},"canonical_sha256":"838bc4e5ba01a4455286b686e81666ca2effda8e8ca0f2fad08df0c6b4bd35ca","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"838bc4e5ba01a4455286b686e81666ca2effda8e8ca0f2fad08df0c6b4bd35ca","first_computed_at":"2026-05-18T01:20:40.603897Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:20:40.603897Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"SZdT0uyAwnsjxD8RZkey3kYgIL8nC+/dyR3nk2L4FT8O/PYE9sxYdiKKC5O3wTfegKGVg6yEcqbkJiEYIr/pBw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:20:40.604481Z","signed_message":"canonical_sha256_bytes"},"source_id":"1601.00692","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:56a6946c1112869a08afe979307a3ee47a075c936997b46b184fcfc42836d8ad","sha256:30d7411cb62d81afba854399a00603d27a9f69341e0ef77e01b43d9a8f551cea"],"state_sha256":"a828d186c8234003651f12d92fc9a1280aa96ca5aec0d2cd3f7b72b71183dbba"}