{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2024:SHRQPWW5TQ2UHPJWG2SKOA4BDC","short_pith_number":"pith:SHRQPWW5","canonical_record":{"source":{"id":"2408.04465","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2024-08-08T13:49:25Z","cross_cats_sorted":[],"title_canon_sha256":"7623c701b695a7b9720fc3108d035cb833c9fa9a12843e4a663d525b3c898358","abstract_canon_sha256":"a62cf72c884a45236dba2e4813214d9953d4dbb3eea09aeecac5830a631fdd79"},"schema_version":"1.0"},"canonical_sha256":"91e307dadd9c3543bd3636a4a70381189c5119aefd44db4c06c2b6a92b13a732","source":{"kind":"arxiv","id":"2408.04465","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2408.04465","created_at":"2026-07-05T08:53:33Z"},{"alias_kind":"arxiv_version","alias_value":"2408.04465v1","created_at":"2026-07-05T08:53:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2408.04465","created_at":"2026-07-05T08:53:33Z"},{"alias_kind":"pith_short_12","alias_value":"SHRQPWW5TQ2U","created_at":"2026-07-05T08:53:33Z"},{"alias_kind":"pith_short_16","alias_value":"SHRQPWW5TQ2UHPJW","created_at":"2026-07-05T08:53:33Z"},{"alias_kind":"pith_short_8","alias_value":"SHRQPWW5","created_at":"2026-07-05T08:53:33Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2024:SHRQPWW5TQ2UHPJWG2SKOA4BDC","target":"record","payload":{"canonical_record":{"source":{"id":"2408.04465","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2024-08-08T13:49:25Z","cross_cats_sorted":[],"title_canon_sha256":"7623c701b695a7b9720fc3108d035cb833c9fa9a12843e4a663d525b3c898358","abstract_canon_sha256":"a62cf72c884a45236dba2e4813214d9953d4dbb3eea09aeecac5830a631fdd79"},"schema_version":"1.0"},"canonical_sha256":"91e307dadd9c3543bd3636a4a70381189c5119aefd44db4c06c2b6a92b13a732","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T08:53:33.705904Z","signature_b64":"9LrmbA5lwkd8Nbbvmmx/KGA2STxOX5T3V17caRPExmBdPupxqKeWDarGKDky9vwzQAn4+dcHLRkpG9ybkP1aCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"91e307dadd9c3543bd3636a4a70381189c5119aefd44db4c06c2b6a92b13a732","last_reissued_at":"2026-07-05T08:53:33.705496Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T08:53:33.705496Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2408.04465","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":"2026-07-05T08:53:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FtXL/bYMAM/l5mmB3aSWltZd5M8H4sjqTWZBeh90MbbjmtGh0ch6+o0WrpA4ijmEegnA4g/fqU7vaXOGRoilBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T13:20:44.216906Z"},"content_sha256":"df03bd2260f291d77907c0011deb93c3b5451fa116d00ec7314f7e1a82780f2c","schema_version":"1.0","event_id":"sha256:df03bd2260f291d77907c0011deb93c3b5451fa116d00ec7314f7e1a82780f2c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2024:SHRQPWW5TQ2UHPJWG2SKOA4BDC","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A Multi-wavelength, Multi-epoch Monitoring Campaign of Accretion Variability in T Tauri Stars from the ODYSSEUS Survey. III. Optical Spectra","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Agnes Kospal, Antonio Frasca, Caeley V. Pittman, Carlo F. Manara, Catherine C. Espaillat, Connor E. Robinson, Eleonora Fiorellino, Elisabetta Rigliaco, Filipe Gameiro, Fredrick M. Walter, James Muzerolle, Jochen Eisloffel, John Wendeborn, Justyn Campbell-White, Karina Mauco, Laura Venuti, Manuele Gangi, Nuria Calvet, Pauline McGinnis, Peter Abraham, Rik Claes, Thanawuth Thanathibodee, Zhen Guo","submitted_at":"2024-08-08T13:49:25Z","abstract_excerpt":"Classical T Tauri Stars (CTTSs) are highly variable stars that possess gas- and dust-rich disks from which planets form. Much of their variability is driven by mass accretion from the surrounding disk, a process that is still not entirely understood. A multi-epoch optical spectral monitoring campaign of four CTTSs (TW Hya, RU Lup, BP Tau, and GM Aur) was conducted along with contemporaneous HST UV spectra and ground-based photometry in an effort to determine accretion characteristics and gauge variability in this sample. Using an accretion flow model, we find that the magnetospheric truncation"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2408.04465","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/2408.04465/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":"2026-07-05T08:53:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"33BYFVywDEsI4z3RWz3BfoRQ9rqk+nI6E0cnh7JMpUb0zrMczyHZzOjDJjRSWjoNQP2HIATpH7PAIr25O5PfAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T13:20:44.217498Z"},"content_sha256":"be15f003dc38ec5d228802c337dd8ccbb72f92ecf448a948d3b829c8ef47e15f","schema_version":"1.0","event_id":"sha256:be15f003dc38ec5d228802c337dd8ccbb72f92ecf448a948d3b829c8ef47e15f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/SHRQPWW5TQ2UHPJWG2SKOA4BDC/bundle.json","state_url":"https://pith.science/pith/SHRQPWW5TQ2UHPJWG2SKOA4BDC/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/SHRQPWW5TQ2UHPJWG2SKOA4BDC/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":"2026-08-04T13:20:44Z","links":{"resolver":"https://pith.science/pith/SHRQPWW5TQ2UHPJWG2SKOA4BDC","bundle":"https://pith.science/pith/SHRQPWW5TQ2UHPJWG2SKOA4BDC/bundle.json","state":"https://pith.science/pith/SHRQPWW5TQ2UHPJWG2SKOA4BDC/state.json","well_known_bundle":"https://pith.science/.well-known/pith/SHRQPWW5TQ2UHPJWG2SKOA4BDC/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:SHRQPWW5TQ2UHPJWG2SKOA4BDC","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":"a62cf72c884a45236dba2e4813214d9953d4dbb3eea09aeecac5830a631fdd79","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2024-08-08T13:49:25Z","title_canon_sha256":"7623c701b695a7b9720fc3108d035cb833c9fa9a12843e4a663d525b3c898358"},"schema_version":"1.0","source":{"id":"2408.04465","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2408.04465","created_at":"2026-07-05T08:53:33Z"},{"alias_kind":"arxiv_version","alias_value":"2408.04465v1","created_at":"2026-07-05T08:53:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2408.04465","created_at":"2026-07-05T08:53:33Z"},{"alias_kind":"pith_short_12","alias_value":"SHRQPWW5TQ2U","created_at":"2026-07-05T08:53:33Z"},{"alias_kind":"pith_short_16","alias_value":"SHRQPWW5TQ2UHPJW","created_at":"2026-07-05T08:53:33Z"},{"alias_kind":"pith_short_8","alias_value":"SHRQPWW5","created_at":"2026-07-05T08:53:33Z"}],"graph_snapshots":[{"event_id":"sha256:be15f003dc38ec5d228802c337dd8ccbb72f92ecf448a948d3b829c8ef47e15f","target":"graph","created_at":"2026-07-05T08:53:33Z","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/2408.04465/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Classical T Tauri Stars (CTTSs) are highly variable stars that possess gas- and dust-rich disks from which planets form. Much of their variability is driven by mass accretion from the surrounding disk, a process that is still not entirely understood. A multi-epoch optical spectral monitoring campaign of four CTTSs (TW Hya, RU Lup, BP Tau, and GM Aur) was conducted along with contemporaneous HST UV spectra and ground-based photometry in an effort to determine accretion characteristics and gauge variability in this sample. Using an accretion flow model, we find that the magnetospheric truncation","authors_text":"Agnes Kospal, Antonio Frasca, Caeley V. Pittman, Carlo F. Manara, Catherine C. Espaillat, Connor E. Robinson, Eleonora Fiorellino, Elisabetta Rigliaco, Filipe Gameiro, Fredrick M. Walter, James Muzerolle, Jochen Eisloffel, John Wendeborn, Justyn Campbell-White, Karina Mauco, Laura Venuti, Manuele Gangi, Nuria Calvet, Pauline McGinnis, Peter Abraham, Rik Claes, Thanawuth Thanathibodee, Zhen Guo","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2024-08-08T13:49:25Z","title":"A Multi-wavelength, Multi-epoch Monitoring Campaign of Accretion Variability in T Tauri Stars from the ODYSSEUS Survey. III. Optical Spectra"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2408.04465","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:df03bd2260f291d77907c0011deb93c3b5451fa116d00ec7314f7e1a82780f2c","target":"record","created_at":"2026-07-05T08:53:33Z","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":"a62cf72c884a45236dba2e4813214d9953d4dbb3eea09aeecac5830a631fdd79","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2024-08-08T13:49:25Z","title_canon_sha256":"7623c701b695a7b9720fc3108d035cb833c9fa9a12843e4a663d525b3c898358"},"schema_version":"1.0","source":{"id":"2408.04465","kind":"arxiv","version":1}},"canonical_sha256":"91e307dadd9c3543bd3636a4a70381189c5119aefd44db4c06c2b6a92b13a732","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"91e307dadd9c3543bd3636a4a70381189c5119aefd44db4c06c2b6a92b13a732","first_computed_at":"2026-07-05T08:53:33.705496Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T08:53:33.705496Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"9LrmbA5lwkd8Nbbvmmx/KGA2STxOX5T3V17caRPExmBdPupxqKeWDarGKDky9vwzQAn4+dcHLRkpG9ybkP1aCA==","signature_status":"signed_v1","signed_at":"2026-07-05T08:53:33.705904Z","signed_message":"canonical_sha256_bytes"},"source_id":"2408.04465","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:df03bd2260f291d77907c0011deb93c3b5451fa116d00ec7314f7e1a82780f2c","sha256:be15f003dc38ec5d228802c337dd8ccbb72f92ecf448a948d3b829c8ef47e15f"],"state_sha256":"73662aa040d6eba707144042e7bf2b7c48b524eb0872ea39fa01fe15d215512b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rx0kyR9Qx7OuO99aJuvZ/O8xno73wIQhEsvkfZ4WR1cHamaA9IwLSjkZUbM7WBXsCaicwjZOzz3E70pqZamFCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-04T13:20:44.223078Z","bundle_sha256":"d626b22331271a803f3bb6c162646d54946924e58c92ef686e4f96dad34a61b7"}}