{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:PGVPB6FNPBD47BYM6EDNCJUI2O","short_pith_number":"pith:PGVPB6FN","canonical_record":{"source":{"id":"1607.00323","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-07-01T17:28:20Z","cross_cats_sorted":[],"title_canon_sha256":"a0861b4cdbc189b7fa2a6c2a0427a2e88cc7aded8ec38ed6a0ff9205879b726e","abstract_canon_sha256":"9f572b308dadebf22d24c8495baa26e2d0fa0b22ab349b4630a719df39714951"},"schema_version":"1.0"},"canonical_sha256":"79aaf0f8ad7847cf870cf106d12688d39089a4bded1ab8fde365fa81052688b5","source":{"kind":"arxiv","id":"1607.00323","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1607.00323","created_at":"2026-05-18T01:08:38Z"},{"alias_kind":"arxiv_version","alias_value":"1607.00323v1","created_at":"2026-05-18T01:08:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1607.00323","created_at":"2026-05-18T01:08:38Z"},{"alias_kind":"pith_short_12","alias_value":"PGVPB6FNPBD4","created_at":"2026-05-18T12:30:39Z"},{"alias_kind":"pith_short_16","alias_value":"PGVPB6FNPBD47BYM","created_at":"2026-05-18T12:30:39Z"},{"alias_kind":"pith_short_8","alias_value":"PGVPB6FN","created_at":"2026-05-18T12:30:39Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:PGVPB6FNPBD47BYM6EDNCJUI2O","target":"record","payload":{"canonical_record":{"source":{"id":"1607.00323","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-07-01T17:28:20Z","cross_cats_sorted":[],"title_canon_sha256":"a0861b4cdbc189b7fa2a6c2a0427a2e88cc7aded8ec38ed6a0ff9205879b726e","abstract_canon_sha256":"9f572b308dadebf22d24c8495baa26e2d0fa0b22ab349b4630a719df39714951"},"schema_version":"1.0"},"canonical_sha256":"79aaf0f8ad7847cf870cf106d12688d39089a4bded1ab8fde365fa81052688b5","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:08:38.428838Z","signature_b64":"eG3xUTqzvhANDWCjJdFLZ2gCAvHd7WXVAaKVJUlBdrzBgoHGeh1onku2A5cZdPWzk3D2gRzWmdQPf5cht+6cAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"79aaf0f8ad7847cf870cf106d12688d39089a4bded1ab8fde365fa81052688b5","last_reissued_at":"2026-05-18T01:08:38.428371Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:08:38.428371Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1607.00323","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:08:38Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uYCmAW6xn4jysdc42syMjmGD5lZN5UzR2FgjAmQJ43mMMv44Bf0W02OAejedGFCdAgGkEZqAtL8osyQPeT0ECQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T22:30:30.727874Z"},"content_sha256":"5244e4c82268afa2a90127530c919673ced415b0f177819fcede67b7e6d664fe","schema_version":"1.0","event_id":"sha256:5244e4c82268afa2a90127530c919673ced415b0f177819fcede67b7e6d664fe"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:PGVPB6FNPBD47BYM6EDNCJUI2O","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Rotationally-Driven Fragmentation for the Formation of the Binary Protostellar System L1551 IRS 5","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Jeremy Lim, Kazuya Saigo, Paul K. H. Yeung, Shigehisa Takakuwa, Tomoaki Matsumoto, Tomoyuki Hanawa","submitted_at":"2016-07-01T17:28:20Z","abstract_excerpt":"Either bulk rotation or local turbulence is widely invoked to drive fragmentation in collapsing cores so as to produce multiple star systems. Even when the two mechanisms predict different manners in which the stellar spins and orbits are aligned, subsequent internal or external interactions can drive multiple systems towards or away from alignment thus masking their formation process. Here, we demonstrate that the geometrical and dynamical relationship between the binary system and its surrounding bulk envelope provide the crucial distinction between fragmentation models. We find that the cir"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1607.00323","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:08:38Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"t3iTpOnGfRhvyvAeEk9RNvJck+rGrstK4ShWFbPz0a/op0iMgZPyHEHiyBXZNBmeMQbrzoHzAJ38yYyZqqsLCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T22:30:30.728228Z"},"content_sha256":"df878adf4048849e81ec44785462d310c2f7c31733a4cf6c0f27d00e0e4823fb","schema_version":"1.0","event_id":"sha256:df878adf4048849e81ec44785462d310c2f7c31733a4cf6c0f27d00e0e4823fb"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PGVPB6FNPBD47BYM6EDNCJUI2O/bundle.json","state_url":"https://pith.science/pith/PGVPB6FNPBD47BYM6EDNCJUI2O/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PGVPB6FNPBD47BYM6EDNCJUI2O/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-05-30T22:30:30Z","links":{"resolver":"https://pith.science/pith/PGVPB6FNPBD47BYM6EDNCJUI2O","bundle":"https://pith.science/pith/PGVPB6FNPBD47BYM6EDNCJUI2O/bundle.json","state":"https://pith.science/pith/PGVPB6FNPBD47BYM6EDNCJUI2O/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PGVPB6FNPBD47BYM6EDNCJUI2O/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:PGVPB6FNPBD47BYM6EDNCJUI2O","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":"9f572b308dadebf22d24c8495baa26e2d0fa0b22ab349b4630a719df39714951","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-07-01T17:28:20Z","title_canon_sha256":"a0861b4cdbc189b7fa2a6c2a0427a2e88cc7aded8ec38ed6a0ff9205879b726e"},"schema_version":"1.0","source":{"id":"1607.00323","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1607.00323","created_at":"2026-05-18T01:08:38Z"},{"alias_kind":"arxiv_version","alias_value":"1607.00323v1","created_at":"2026-05-18T01:08:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1607.00323","created_at":"2026-05-18T01:08:38Z"},{"alias_kind":"pith_short_12","alias_value":"PGVPB6FNPBD4","created_at":"2026-05-18T12:30:39Z"},{"alias_kind":"pith_short_16","alias_value":"PGVPB6FNPBD47BYM","created_at":"2026-05-18T12:30:39Z"},{"alias_kind":"pith_short_8","alias_value":"PGVPB6FN","created_at":"2026-05-18T12:30:39Z"}],"graph_snapshots":[{"event_id":"sha256:df878adf4048849e81ec44785462d310c2f7c31733a4cf6c0f27d00e0e4823fb","target":"graph","created_at":"2026-05-18T01:08:38Z","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":"Either bulk rotation or local turbulence is widely invoked to drive fragmentation in collapsing cores so as to produce multiple star systems. Even when the two mechanisms predict different manners in which the stellar spins and orbits are aligned, subsequent internal or external interactions can drive multiple systems towards or away from alignment thus masking their formation process. Here, we demonstrate that the geometrical and dynamical relationship between the binary system and its surrounding bulk envelope provide the crucial distinction between fragmentation models. We find that the cir","authors_text":"Jeremy Lim, Kazuya Saigo, Paul K. H. Yeung, Shigehisa Takakuwa, Tomoaki Matsumoto, Tomoyuki Hanawa","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-07-01T17:28:20Z","title":"Rotationally-Driven Fragmentation for the Formation of the Binary Protostellar System L1551 IRS 5"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1607.00323","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":"sha256:5244e4c82268afa2a90127530c919673ced415b0f177819fcede67b7e6d664fe","target":"record","created_at":"2026-05-18T01:08:38Z","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":"9f572b308dadebf22d24c8495baa26e2d0fa0b22ab349b4630a719df39714951","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-07-01T17:28:20Z","title_canon_sha256":"a0861b4cdbc189b7fa2a6c2a0427a2e88cc7aded8ec38ed6a0ff9205879b726e"},"schema_version":"1.0","source":{"id":"1607.00323","kind":"arxiv","version":1}},"canonical_sha256":"79aaf0f8ad7847cf870cf106d12688d39089a4bded1ab8fde365fa81052688b5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"79aaf0f8ad7847cf870cf106d12688d39089a4bded1ab8fde365fa81052688b5","first_computed_at":"2026-05-18T01:08:38.428371Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:08:38.428371Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"eG3xUTqzvhANDWCjJdFLZ2gCAvHd7WXVAaKVJUlBdrzBgoHGeh1onku2A5cZdPWzk3D2gRzWmdQPf5cht+6cAg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:08:38.428838Z","signed_message":"canonical_sha256_bytes"},"source_id":"1607.00323","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5244e4c82268afa2a90127530c919673ced415b0f177819fcede67b7e6d664fe","sha256:df878adf4048849e81ec44785462d310c2f7c31733a4cf6c0f27d00e0e4823fb"],"state_sha256":"8919ab66df97dd667f525bc29469dab7663b62eebe80efa20d625e46ba74b613"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"K90vjuFP0SeKA+xgZdfgYsvkFkefyCuwj4bnU/e8TRMMG11q3MxCjuJUmPREcotAg6CIZLcIUYJ4NT7inZf8Dw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T22:30:30.730286Z","bundle_sha256":"c2cc54261ec02eaf8c410b838963c26b9c827640e250927f14717de4e283c8c5"}}