{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:3BVI324RPAKYPN6XLFJRKKPLIG","short_pith_number":"pith:3BVI324R","canonical_record":{"source":{"id":"1308.2054","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2013-08-09T08:48:29Z","cross_cats_sorted":[],"title_canon_sha256":"9515bb05d3ea545efc53b1dd0bb546a8598532434242c0722f38624b750966ed","abstract_canon_sha256":"442e8c47302422a06291a6bdaa7a0801bc646b0d78a7677bf7d11ebf35f32ed3"},"schema_version":"1.0"},"canonical_sha256":"d86a8deb91781587b7d759531529eb4187c8e453185a4ab9fb4933bf6bc1f6d9","source":{"kind":"arxiv","id":"1308.2054","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1308.2054","created_at":"2026-05-18T01:48:21Z"},{"alias_kind":"arxiv_version","alias_value":"1308.2054v1","created_at":"2026-05-18T01:48:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1308.2054","created_at":"2026-05-18T01:48:21Z"},{"alias_kind":"pith_short_12","alias_value":"3BVI324RPAKY","created_at":"2026-05-18T12:27:32Z"},{"alias_kind":"pith_short_16","alias_value":"3BVI324RPAKYPN6X","created_at":"2026-05-18T12:27:32Z"},{"alias_kind":"pith_short_8","alias_value":"3BVI324R","created_at":"2026-05-18T12:27:32Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:3BVI324RPAKYPN6XLFJRKKPLIG","target":"record","payload":{"canonical_record":{"source":{"id":"1308.2054","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2013-08-09T08:48:29Z","cross_cats_sorted":[],"title_canon_sha256":"9515bb05d3ea545efc53b1dd0bb546a8598532434242c0722f38624b750966ed","abstract_canon_sha256":"442e8c47302422a06291a6bdaa7a0801bc646b0d78a7677bf7d11ebf35f32ed3"},"schema_version":"1.0"},"canonical_sha256":"d86a8deb91781587b7d759531529eb4187c8e453185a4ab9fb4933bf6bc1f6d9","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:48:21.855033Z","signature_b64":"Emo5ujMzpGjlFR79MgqYemhO3WEvjB9UCvqLexZi3KX/EgZTnVsAX/n96V3rB9nuZ8HLIu2PoDaaBtFk7LJeBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d86a8deb91781587b7d759531529eb4187c8e453185a4ab9fb4933bf6bc1f6d9","last_reissued_at":"2026-05-18T01:48:21.854574Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:48:21.854574Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1308.2054","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":"2026-05-18T01:48:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"eZgKUu83iLXwpc7VAFMsk6dFGwZFIIXomfDMC9Y3i7euAuufq0Y6YszcSG7dOyE0bMoq+WkMSlBWRjeWWRCcDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T10:58:10.338245Z"},"content_sha256":"f05cd1952cfafce643987731bd2d1ae2243c6da5305a8bfad31088e2c6b13f4f","schema_version":"1.0","event_id":"sha256:f05cd1952cfafce643987731bd2d1ae2243c6da5305a8bfad31088e2c6b13f4f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:3BVI324RPAKYPN6XLFJRKKPLIG","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Evidence for Infalling Gas of Low Angular Momentum towards the L1551 NE Keplerian Circumbinary Disk","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Jeremy Lim, Kazuya Saigo, Masao Saito, Shigehisa Takakuwa","submitted_at":"2013-08-09T08:48:29Z","abstract_excerpt":"We report follow-up observations of the Class I binary protostellar system L1551 NE in the C18O (3--2) line with the SMA in its compact and subcompact configurations. Our previous observations at a higher angular resolution in the extended configuration revealed a circumbinary disk exhibiting Keplerian motion. The combined data having more extensive spatial coverage (~140 - 2000 AU) verify the presence of a Keplerian circumbinary disk, and reveals for the first time a distinct low-velocity (~< +-0.5 km s-1 from the systemic velocity) component that displays a velocity gradient along the minor "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1308.2054","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":"2026-05-18T01:48:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5VxBJmvYuRi94l7anJddfFK6s9TBV5W7I/R5k+BMhZuJ5X+QZ6xKAzBKZCuKfHjsRxb48VzA/Epd9v4wOxXjDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T10:58:10.338924Z"},"content_sha256":"4a0ef16386f74eac7db25981418a36a2155cd316dd2d0aac9635536cd3ba8e68","schema_version":"1.0","event_id":"sha256:4a0ef16386f74eac7db25981418a36a2155cd316dd2d0aac9635536cd3ba8e68"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/3BVI324RPAKYPN6XLFJRKKPLIG/bundle.json","state_url":"https://pith.science/pith/3BVI324RPAKYPN6XLFJRKKPLIG/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/3BVI324RPAKYPN6XLFJRKKPLIG/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":"2026-05-30T10:58:10Z","links":{"resolver":"https://pith.science/pith/3BVI324RPAKYPN6XLFJRKKPLIG","bundle":"https://pith.science/pith/3BVI324RPAKYPN6XLFJRKKPLIG/bundle.json","state":"https://pith.science/pith/3BVI324RPAKYPN6XLFJRKKPLIG/state.json","well_known_bundle":"https://pith.science/.well-known/pith/3BVI324RPAKYPN6XLFJRKKPLIG/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:3BVI324RPAKYPN6XLFJRKKPLIG","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":"442e8c47302422a06291a6bdaa7a0801bc646b0d78a7677bf7d11ebf35f32ed3","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2013-08-09T08:48:29Z","title_canon_sha256":"9515bb05d3ea545efc53b1dd0bb546a8598532434242c0722f38624b750966ed"},"schema_version":"1.0","source":{"id":"1308.2054","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1308.2054","created_at":"2026-05-18T01:48:21Z"},{"alias_kind":"arxiv_version","alias_value":"1308.2054v1","created_at":"2026-05-18T01:48:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1308.2054","created_at":"2026-05-18T01:48:21Z"},{"alias_kind":"pith_short_12","alias_value":"3BVI324RPAKY","created_at":"2026-05-18T12:27:32Z"},{"alias_kind":"pith_short_16","alias_value":"3BVI324RPAKYPN6X","created_at":"2026-05-18T12:27:32Z"},{"alias_kind":"pith_short_8","alias_value":"3BVI324R","created_at":"2026-05-18T12:27:32Z"}],"graph_snapshots":[{"event_id":"sha256:4a0ef16386f74eac7db25981418a36a2155cd316dd2d0aac9635536cd3ba8e68","target":"graph","created_at":"2026-05-18T01:48:21Z","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 report follow-up observations of the Class I binary protostellar system L1551 NE in the C18O (3--2) line with the SMA in its compact and subcompact configurations. Our previous observations at a higher angular resolution in the extended configuration revealed a circumbinary disk exhibiting Keplerian motion. The combined data having more extensive spatial coverage (~140 - 2000 AU) verify the presence of a Keplerian circumbinary disk, and reveals for the first time a distinct low-velocity (~< +-0.5 km s-1 from the systemic velocity) component that displays a velocity gradient along the minor ","authors_text":"Jeremy Lim, Kazuya Saigo, Masao Saito, Shigehisa Takakuwa","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2013-08-09T08:48:29Z","title":"Evidence for Infalling Gas of Low Angular Momentum towards the L1551 NE Keplerian Circumbinary Disk"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1308.2054","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:f05cd1952cfafce643987731bd2d1ae2243c6da5305a8bfad31088e2c6b13f4f","target":"record","created_at":"2026-05-18T01:48:21Z","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":"442e8c47302422a06291a6bdaa7a0801bc646b0d78a7677bf7d11ebf35f32ed3","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2013-08-09T08:48:29Z","title_canon_sha256":"9515bb05d3ea545efc53b1dd0bb546a8598532434242c0722f38624b750966ed"},"schema_version":"1.0","source":{"id":"1308.2054","kind":"arxiv","version":1}},"canonical_sha256":"d86a8deb91781587b7d759531529eb4187c8e453185a4ab9fb4933bf6bc1f6d9","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d86a8deb91781587b7d759531529eb4187c8e453185a4ab9fb4933bf6bc1f6d9","first_computed_at":"2026-05-18T01:48:21.854574Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:48:21.854574Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Emo5ujMzpGjlFR79MgqYemhO3WEvjB9UCvqLexZi3KX/EgZTnVsAX/n96V3rB9nuZ8HLIu2PoDaaBtFk7LJeBw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:48:21.855033Z","signed_message":"canonical_sha256_bytes"},"source_id":"1308.2054","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f05cd1952cfafce643987731bd2d1ae2243c6da5305a8bfad31088e2c6b13f4f","sha256:4a0ef16386f74eac7db25981418a36a2155cd316dd2d0aac9635536cd3ba8e68"],"state_sha256":"7b5a9b174985326587276e6570e3c22d773f56a3eaeacac2aa1dbdb6aa01d31e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"JVltnto7symFD5TldzlOJ4OIeawLQGd0fKGneCKLbdWiXNrp6obaDh/UBUZdbtYSjz82yFVtmN5NPc27YdQeAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T10:58:10.342790Z","bundle_sha256":"c6155bf56d5c32b76e9e39798f367514b48ad285339c9e016d547a39bad5c659"}}