{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:QRFMQUKT35GAF32W6JKJFP24VD","short_pith_number":"pith:QRFMQUKT","canonical_record":{"source":{"id":"1406.0722","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2014-06-03T14:21:46Z","cross_cats_sorted":[],"title_canon_sha256":"370991f9e86d46745db691d4d4fe8a5791e4581bc3f158a90f10ea4b56f77bf9","abstract_canon_sha256":"be24c43368f6023f1fc0fd66d7fcb1ae3480fe4b947ff4196521fef3cc29e645"},"schema_version":"1.0"},"canonical_sha256":"844ac85153df4c02ef56f25492bf5ca8c3ff60b2d1c418d479e436ae1f6cc1cd","source":{"kind":"arxiv","id":"1406.0722","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1406.0722","created_at":"2026-05-18T01:43:02Z"},{"alias_kind":"arxiv_version","alias_value":"1406.0722v1","created_at":"2026-05-18T01:43:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1406.0722","created_at":"2026-05-18T01:43:02Z"},{"alias_kind":"pith_short_12","alias_value":"QRFMQUKT35GA","created_at":"2026-05-18T12:28:46Z"},{"alias_kind":"pith_short_16","alias_value":"QRFMQUKT35GAF32W","created_at":"2026-05-18T12:28:46Z"},{"alias_kind":"pith_short_8","alias_value":"QRFMQUKT","created_at":"2026-05-18T12:28:46Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:QRFMQUKT35GAF32W6JKJFP24VD","target":"record","payload":{"canonical_record":{"source":{"id":"1406.0722","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2014-06-03T14:21:46Z","cross_cats_sorted":[],"title_canon_sha256":"370991f9e86d46745db691d4d4fe8a5791e4581bc3f158a90f10ea4b56f77bf9","abstract_canon_sha256":"be24c43368f6023f1fc0fd66d7fcb1ae3480fe4b947ff4196521fef3cc29e645"},"schema_version":"1.0"},"canonical_sha256":"844ac85153df4c02ef56f25492bf5ca8c3ff60b2d1c418d479e436ae1f6cc1cd","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:43:02.555668Z","signature_b64":"54y6wIQwTv/vn9fyBBef0Fu8Jelvt0k1msehvoUBRVaPfEpjPLoEXv3r6b+428r4qHx2yq+yfn/OlvFev3PNBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"844ac85153df4c02ef56f25492bf5ca8c3ff60b2d1c418d479e436ae1f6cc1cd","last_reissued_at":"2026-05-18T01:43:02.555049Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:43:02.555049Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1406.0722","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":"2026-05-18T01:43:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4TeSYdHAuH8kXP8UeW076ueljHSeVGUYr99AVH1h62Eqrsp2NnkD+hTJbVr+yQ888tt2sdZWZRKG9rmuX18wAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T13:54:41.330212Z"},"content_sha256":"d80f51f08e207d0af692a8d9e8c1ac565efb42c4897c71cf41f5a916603d45eb","schema_version":"1.0","event_id":"sha256:d80f51f08e207d0af692a8d9e8c1ac565efb42c4897c71cf41f5a916603d45eb"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:QRFMQUKT35GAF32W6JKJFP24VD","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The evolution of accretion in young stellar objects: Strong accretors at 3 - 10 Myr","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Catherine Espaillat, Cesar Briceno, Jesus Hernandez, Jon Miller, Laura Ingleby, Melissa McClure, Nuria Calvet","submitted_at":"2014-06-03T14:21:46Z","abstract_excerpt":"While the rate of accretion onto T Tauri stars is predicted to decline with age, objects with strong accretion have been detected up to ages of 10 Myr. We analyze a sample of these old accretors identified by having a significant $U$ band excess and infrared emission from a circumstellar disk. Objects were selected from the ~3 Myr sigma Ori, 4-6 Myr Orion OB1b and 7-10 Myr Orion OB1a star forming associations. We use high resolution spectra from the Magellan Inamori Kyocera Echelle to estimate the veiling of absorption lines and calculate extinction for our T Tauri sample. We also use observat"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1406.0722","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":"2026-05-18T01:43:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WLrFV3a4iSFtkElz6r6eooeeVsOLKMUWEdue+yrvkEBUnBmPQU63AU/0KKMzTPrIci2WUZDAfP4UJ7h8MIs7CQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T13:54:41.330578Z"},"content_sha256":"02ce9b424e8c910a1832264b3e51d57c1b17f189eef4edf816db771d73522bc9","schema_version":"1.0","event_id":"sha256:02ce9b424e8c910a1832264b3e51d57c1b17f189eef4edf816db771d73522bc9"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QRFMQUKT35GAF32W6JKJFP24VD/bundle.json","state_url":"https://pith.science/pith/QRFMQUKT35GAF32W6JKJFP24VD/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QRFMQUKT35GAF32W6JKJFP24VD/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":"2026-06-01T13:54:41Z","links":{"resolver":"https://pith.science/pith/QRFMQUKT35GAF32W6JKJFP24VD","bundle":"https://pith.science/pith/QRFMQUKT35GAF32W6JKJFP24VD/bundle.json","state":"https://pith.science/pith/QRFMQUKT35GAF32W6JKJFP24VD/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QRFMQUKT35GAF32W6JKJFP24VD/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:QRFMQUKT35GAF32W6JKJFP24VD","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":"be24c43368f6023f1fc0fd66d7fcb1ae3480fe4b947ff4196521fef3cc29e645","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2014-06-03T14:21:46Z","title_canon_sha256":"370991f9e86d46745db691d4d4fe8a5791e4581bc3f158a90f10ea4b56f77bf9"},"schema_version":"1.0","source":{"id":"1406.0722","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1406.0722","created_at":"2026-05-18T01:43:02Z"},{"alias_kind":"arxiv_version","alias_value":"1406.0722v1","created_at":"2026-05-18T01:43:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1406.0722","created_at":"2026-05-18T01:43:02Z"},{"alias_kind":"pith_short_12","alias_value":"QRFMQUKT35GA","created_at":"2026-05-18T12:28:46Z"},{"alias_kind":"pith_short_16","alias_value":"QRFMQUKT35GAF32W","created_at":"2026-05-18T12:28:46Z"},{"alias_kind":"pith_short_8","alias_value":"QRFMQUKT","created_at":"2026-05-18T12:28:46Z"}],"graph_snapshots":[{"event_id":"sha256:02ce9b424e8c910a1832264b3e51d57c1b17f189eef4edf816db771d73522bc9","target":"graph","created_at":"2026-05-18T01:43:02Z","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":"While the rate of accretion onto T Tauri stars is predicted to decline with age, objects with strong accretion have been detected up to ages of 10 Myr. We analyze a sample of these old accretors identified by having a significant $U$ band excess and infrared emission from a circumstellar disk. Objects were selected from the ~3 Myr sigma Ori, 4-6 Myr Orion OB1b and 7-10 Myr Orion OB1a star forming associations. We use high resolution spectra from the Magellan Inamori Kyocera Echelle to estimate the veiling of absorption lines and calculate extinction for our T Tauri sample. We also use observat","authors_text":"Catherine Espaillat, Cesar Briceno, Jesus Hernandez, Jon Miller, Laura Ingleby, Melissa McClure, Nuria Calvet","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2014-06-03T14:21:46Z","title":"The evolution of accretion in young stellar objects: Strong accretors at 3 - 10 Myr"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1406.0722","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:d80f51f08e207d0af692a8d9e8c1ac565efb42c4897c71cf41f5a916603d45eb","target":"record","created_at":"2026-05-18T01:43:02Z","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":"be24c43368f6023f1fc0fd66d7fcb1ae3480fe4b947ff4196521fef3cc29e645","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2014-06-03T14:21:46Z","title_canon_sha256":"370991f9e86d46745db691d4d4fe8a5791e4581bc3f158a90f10ea4b56f77bf9"},"schema_version":"1.0","source":{"id":"1406.0722","kind":"arxiv","version":1}},"canonical_sha256":"844ac85153df4c02ef56f25492bf5ca8c3ff60b2d1c418d479e436ae1f6cc1cd","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"844ac85153df4c02ef56f25492bf5ca8c3ff60b2d1c418d479e436ae1f6cc1cd","first_computed_at":"2026-05-18T01:43:02.555049Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:43:02.555049Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"54y6wIQwTv/vn9fyBBef0Fu8Jelvt0k1msehvoUBRVaPfEpjPLoEXv3r6b+428r4qHx2yq+yfn/OlvFev3PNBw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:43:02.555668Z","signed_message":"canonical_sha256_bytes"},"source_id":"1406.0722","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d80f51f08e207d0af692a8d9e8c1ac565efb42c4897c71cf41f5a916603d45eb","sha256:02ce9b424e8c910a1832264b3e51d57c1b17f189eef4edf816db771d73522bc9"],"state_sha256":"f23735932dc567ec95fae48ab2322b3b65e1e8d3190f35a144b47610c1d6f57c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Gc9zHgqO2c2LZL3KOHyG3sZpxFl6L8NMHwVwP7Y7H//GzPSHfSpuf0LijZ8sqFrFTOl0ENIN9NpveoPhWpwgCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T13:54:41.332778Z","bundle_sha256":"af6a3997ce22645d0b897e66cc27a1834ac881ef81e36d3e4dc826af01dc75ba"}}