{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:MY4SWTFBOWZIKDDLOPZYXTDDJ7","short_pith_number":"pith:MY4SWTFB","canonical_record":{"source":{"id":"2107.13566","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2021-07-28T18:00:02Z","cross_cats_sorted":["astro-ph.EP"],"title_canon_sha256":"bf222ef7ecc16ca4e1349a36497af4f153a66509995ab16b9dad8b936b051e05","abstract_canon_sha256":"9491b9b352dead63c252305e46bf0a821147c9fdd07d4b0827a6deffcb20b249"},"schema_version":"1.0"},"canonical_sha256":"66392b4ca175b2850c6b73f38bcc634fefcd329ddaeaf8cf07261fed4e8b821b","source":{"kind":"arxiv","id":"2107.13566","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2107.13566","created_at":"2026-07-05T03:04:56Z"},{"alias_kind":"arxiv_version","alias_value":"2107.13566v1","created_at":"2026-07-05T03:04:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2107.13566","created_at":"2026-07-05T03:04:56Z"},{"alias_kind":"pith_short_12","alias_value":"MY4SWTFBOWZI","created_at":"2026-07-05T03:04:56Z"},{"alias_kind":"pith_short_16","alias_value":"MY4SWTFBOWZIKDDL","created_at":"2026-07-05T03:04:56Z"},{"alias_kind":"pith_short_8","alias_value":"MY4SWTFB","created_at":"2026-07-05T03:04:56Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:MY4SWTFBOWZIKDDLOPZYXTDDJ7","target":"record","payload":{"canonical_record":{"source":{"id":"2107.13566","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2021-07-28T18:00:02Z","cross_cats_sorted":["astro-ph.EP"],"title_canon_sha256":"bf222ef7ecc16ca4e1349a36497af4f153a66509995ab16b9dad8b936b051e05","abstract_canon_sha256":"9491b9b352dead63c252305e46bf0a821147c9fdd07d4b0827a6deffcb20b249"},"schema_version":"1.0"},"canonical_sha256":"66392b4ca175b2850c6b73f38bcc634fefcd329ddaeaf8cf07261fed4e8b821b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T03:04:56.323871Z","signature_b64":"LE4ZUlHanKzIYo/PQ3tH5/LOeEBi6RGcyGZAYO4zbKnRwBPSCusBc37FzP/fFwKzkg1OQWDtNNsMSYiCb+ivDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"66392b4ca175b2850c6b73f38bcc634fefcd329ddaeaf8cf07261fed4e8b821b","last_reissued_at":"2026-07-05T03:04:56.323402Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T03:04:56.323402Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2107.13566","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":"2026-07-05T03:04:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xkLXNJMxyYRCW1Am41u9MlUNvu50yaYGS2hXopJRvuVW00KcFKWRgCuHscYUc6Yi6t80VLceZV6wj3c2GslLCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-16T17:20:47.827938Z"},"content_sha256":"b728f7507fbdeb90a4c5b864d74eac8b98ee010555d67acb1397605066a178d5","schema_version":"1.0","event_id":"sha256:b728f7507fbdeb90a4c5b864d74eac8b98ee010555d67acb1397605066a178d5"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:MY4SWTFBOWZIKDDLOPZYXTDDJ7","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Circumbinary and circumstellar discs around the eccentric binary IRAS 04158+2805 -- a testbed for binary-disc interaction","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.EP"],"primary_cat":"astro-ph.SR","authors_text":"Christophe Pinte, Claudia Toci, Daniele Fasano, Daniel J. Price, Enrico Ragusa, Fran\\c{c}ois M\\'enard, Gaspard Duch\\^ene, Gerrit van der Plas, Giuseppe Lodato, Karl Stapelfeldt, Marion Villenave, Nicol\\'as Cuello, Schuyler Wolff","submitted_at":"2021-07-28T18:00:02Z","abstract_excerpt":"IRAS~04158+2805 has long been thought to be a very low mass T-Tauri star (VLMS) surrounded by a nearly edge-on, extremely large disc. Recent observations revealed that this source hosts a binary surrounded by an extended circumbinary disc with a central dust cavity. In this paper, we combine ALMA multi-wavelength observations of continuum and $^{12}$CO line emission, with H$\\alpha$ imaging and Keck astrometric measures of the binary to develop a coherent dynamical model of this system. The system features an azimuthal asymmetry detected at the western edge of the cavity in Band~7 observations "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2107.13566","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2107.13566/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T03:04:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tB1ZVIPYQl5Hala+J5pBV/Sk3EmrxxA5zin1zf+AViniKraTeKalvxFrXROgrjgxqkvTQuh32y8o4+Vqqb9bBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-16T17:20:47.828457Z"},"content_sha256":"d121d5c60ae64e51e9ecf730873028da07d3c1e8c6b0803e1ae7d300d10f45d2","schema_version":"1.0","event_id":"sha256:d121d5c60ae64e51e9ecf730873028da07d3c1e8c6b0803e1ae7d300d10f45d2"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/MY4SWTFBOWZIKDDLOPZYXTDDJ7/bundle.json","state_url":"https://pith.science/pith/MY4SWTFBOWZIKDDLOPZYXTDDJ7/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/MY4SWTFBOWZIKDDLOPZYXTDDJ7/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":"2026-08-16T17:20:47Z","links":{"resolver":"https://pith.science/pith/MY4SWTFBOWZIKDDLOPZYXTDDJ7","bundle":"https://pith.science/pith/MY4SWTFBOWZIKDDLOPZYXTDDJ7/bundle.json","state":"https://pith.science/pith/MY4SWTFBOWZIKDDLOPZYXTDDJ7/state.json","well_known_bundle":"https://pith.science/.well-known/pith/MY4SWTFBOWZIKDDLOPZYXTDDJ7/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:MY4SWTFBOWZIKDDLOPZYXTDDJ7","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":"9491b9b352dead63c252305e46bf0a821147c9fdd07d4b0827a6deffcb20b249","cross_cats_sorted":["astro-ph.EP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2021-07-28T18:00:02Z","title_canon_sha256":"bf222ef7ecc16ca4e1349a36497af4f153a66509995ab16b9dad8b936b051e05"},"schema_version":"1.0","source":{"id":"2107.13566","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2107.13566","created_at":"2026-07-05T03:04:56Z"},{"alias_kind":"arxiv_version","alias_value":"2107.13566v1","created_at":"2026-07-05T03:04:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2107.13566","created_at":"2026-07-05T03:04:56Z"},{"alias_kind":"pith_short_12","alias_value":"MY4SWTFBOWZI","created_at":"2026-07-05T03:04:56Z"},{"alias_kind":"pith_short_16","alias_value":"MY4SWTFBOWZIKDDL","created_at":"2026-07-05T03:04:56Z"},{"alias_kind":"pith_short_8","alias_value":"MY4SWTFB","created_at":"2026-07-05T03:04:56Z"}],"graph_snapshots":[{"event_id":"sha256:d121d5c60ae64e51e9ecf730873028da07d3c1e8c6b0803e1ae7d300d10f45d2","target":"graph","created_at":"2026-07-05T03:04:56Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2107.13566/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"IRAS~04158+2805 has long been thought to be a very low mass T-Tauri star (VLMS) surrounded by a nearly edge-on, extremely large disc. Recent observations revealed that this source hosts a binary surrounded by an extended circumbinary disc with a central dust cavity. In this paper, we combine ALMA multi-wavelength observations of continuum and $^{12}$CO line emission, with H$\\alpha$ imaging and Keck astrometric measures of the binary to develop a coherent dynamical model of this system. The system features an azimuthal asymmetry detected at the western edge of the cavity in Band~7 observations ","authors_text":"Christophe Pinte, Claudia Toci, Daniele Fasano, Daniel J. Price, Enrico Ragusa, Fran\\c{c}ois M\\'enard, Gaspard Duch\\^ene, Gerrit van der Plas, Giuseppe Lodato, Karl Stapelfeldt, Marion Villenave, Nicol\\'as Cuello, Schuyler Wolff","cross_cats":["astro-ph.EP"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2021-07-28T18:00:02Z","title":"Circumbinary and circumstellar discs around the eccentric binary IRAS 04158+2805 -- a testbed for binary-disc interaction"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2107.13566","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:b728f7507fbdeb90a4c5b864d74eac8b98ee010555d67acb1397605066a178d5","target":"record","created_at":"2026-07-05T03:04:56Z","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":"9491b9b352dead63c252305e46bf0a821147c9fdd07d4b0827a6deffcb20b249","cross_cats_sorted":["astro-ph.EP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2021-07-28T18:00:02Z","title_canon_sha256":"bf222ef7ecc16ca4e1349a36497af4f153a66509995ab16b9dad8b936b051e05"},"schema_version":"1.0","source":{"id":"2107.13566","kind":"arxiv","version":1}},"canonical_sha256":"66392b4ca175b2850c6b73f38bcc634fefcd329ddaeaf8cf07261fed4e8b821b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"66392b4ca175b2850c6b73f38bcc634fefcd329ddaeaf8cf07261fed4e8b821b","first_computed_at":"2026-07-05T03:04:56.323402Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:04:56.323402Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"LE4ZUlHanKzIYo/PQ3tH5/LOeEBi6RGcyGZAYO4zbKnRwBPSCusBc37FzP/fFwKzkg1OQWDtNNsMSYiCb+ivDw==","signature_status":"signed_v1","signed_at":"2026-07-05T03:04:56.323871Z","signed_message":"canonical_sha256_bytes"},"source_id":"2107.13566","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b728f7507fbdeb90a4c5b864d74eac8b98ee010555d67acb1397605066a178d5","sha256:d121d5c60ae64e51e9ecf730873028da07d3c1e8c6b0803e1ae7d300d10f45d2"],"state_sha256":"9bf0802b19d0cfbaa05c6fcc5d1aaf51cc52bb86d317f4a52556cdc86f11ae68"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jfYmA2OIb05yyXXVc6FV9hjzxCQ1qcpPt82C6S6G0C28stPOHota+L6e9SWBF3l9HXLVFBFR0lTPu2aD9JCtBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-16T17:20:47.833530Z","bundle_sha256":"a3777e9970faf8b97dd46a292688a6f0ec7d1a4f22e59bb0b5aa2bc188fb93d3"}}