{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:LPPNUNXAGZHZ2X7VAE4H6MAZVO","short_pith_number":"pith:LPPNUNXA","canonical_record":{"source":{"id":"1508.05643","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-08-23T18:48:47Z","cross_cats_sorted":[],"title_canon_sha256":"d44a56de338a5784ecff115dab89b040d0975a0ef3f04d754b3af48f82f364b4","abstract_canon_sha256":"1b84a71a209cce694cd5116896154ee39fc6266d90e28f6961acde43565a523b"},"schema_version":"1.0"},"canonical_sha256":"5bdeda36e0364f9d5ff501387f3019ab9d77d413b747b6193b947d66c50dcd88","source":{"kind":"arxiv","id":"1508.05643","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1508.05643","created_at":"2026-05-18T01:28:03Z"},{"alias_kind":"arxiv_version","alias_value":"1508.05643v2","created_at":"2026-05-18T01:28:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1508.05643","created_at":"2026-05-18T01:28:03Z"},{"alias_kind":"pith_short_12","alias_value":"LPPNUNXAGZHZ","created_at":"2026-05-18T12:29:29Z"},{"alias_kind":"pith_short_16","alias_value":"LPPNUNXAGZHZ2X7V","created_at":"2026-05-18T12:29:29Z"},{"alias_kind":"pith_short_8","alias_value":"LPPNUNXA","created_at":"2026-05-18T12:29:29Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:LPPNUNXAGZHZ2X7VAE4H6MAZVO","target":"record","payload":{"canonical_record":{"source":{"id":"1508.05643","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-08-23T18:48:47Z","cross_cats_sorted":[],"title_canon_sha256":"d44a56de338a5784ecff115dab89b040d0975a0ef3f04d754b3af48f82f364b4","abstract_canon_sha256":"1b84a71a209cce694cd5116896154ee39fc6266d90e28f6961acde43565a523b"},"schema_version":"1.0"},"canonical_sha256":"5bdeda36e0364f9d5ff501387f3019ab9d77d413b747b6193b947d66c50dcd88","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:28:03.438343Z","signature_b64":"XtBEGcTo3upioqjBlaHVk0TGWUZ2pbpANRizdPuzZlUjgnCx5Lcd/BTbV1FLu281pAbJV7gsqVD81MhXHky4Aw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5bdeda36e0364f9d5ff501387f3019ab9d77d413b747b6193b947d66c50dcd88","last_reissued_at":"2026-05-18T01:28:03.437717Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:28:03.437717Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1508.05643","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:28:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"foLgsGtrjaTM+RLsEGvjLs7L+QeXcxWUQN+qCAKLYbzfELEQvX7GGBVWrc0GTgjRw+OcwGn3BxzA/6F9v5UPBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-07T17:00:52.392496Z"},"content_sha256":"647e41716d954dd1333e86d31ca7c8dc4f4ef192bb9fcd29c80ff8109b9d3033","schema_version":"1.0","event_id":"sha256:647e41716d954dd1333e86d31ca7c8dc4f4ef192bb9fcd29c80ff8109b9d3033"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:LPPNUNXAGZHZ2X7VAE4H6MAZVO","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Ages of A-Stars I: Interferometric Observations and Age Estimates for Stars in the Ursa Major Moving Group","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"C. Farrington, E. Baines, G. Schaefer, H. McAlister, Jeremy Jones, J. Patience, J. Sturmann, L. Sturmann, M. Ireland, N. Turner, P. J. Goldfinger, R. J. White, S. T. Ridgway, T. Boyajian, T. ten Brummelaar","submitted_at":"2015-08-23T18:48:47Z","abstract_excerpt":"We have observed and spatially resolved a set of seven A-type stars in the nearby Ursa Major moving group with the Classic, CLIMB, and PAVO beam combiners on the CHARA Array. At least four of these stars have large rotational velocities ($v \\sin i$ $\\gtrsim$ 170 $\\mathrm{km~s^{-1}}$) and are expected to be oblate. These interferometric measurements, the stars' observed photometric energy distributions, and $v \\sin i$ values are used to computationally construct model oblate stars from which stellar properties (inclination, rotational velocity, and the radius and effective temperature as a func"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1508.05643","kind":"arxiv","version":2},"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":"2026-05-18T01:28:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ZBr5GBDI9p8fGBaPA0sXzmu0oPS+YVHRKhsMs/G0QMoGetPY+noQvjzEWTOTSa9thDO/QJhhnT0nuKVTu+DpCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-07T17:00:52.393178Z"},"content_sha256":"9c4689559251fbf03eee60ae4766002af763c0f2288aa43f11cd1c18e92842ef","schema_version":"1.0","event_id":"sha256:9c4689559251fbf03eee60ae4766002af763c0f2288aa43f11cd1c18e92842ef"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/LPPNUNXAGZHZ2X7VAE4H6MAZVO/bundle.json","state_url":"https://pith.science/pith/LPPNUNXAGZHZ2X7VAE4H6MAZVO/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/LPPNUNXAGZHZ2X7VAE4H6MAZVO/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":"2026-06-07T17:00:52Z","links":{"resolver":"https://pith.science/pith/LPPNUNXAGZHZ2X7VAE4H6MAZVO","bundle":"https://pith.science/pith/LPPNUNXAGZHZ2X7VAE4H6MAZVO/bundle.json","state":"https://pith.science/pith/LPPNUNXAGZHZ2X7VAE4H6MAZVO/state.json","well_known_bundle":"https://pith.science/.well-known/pith/LPPNUNXAGZHZ2X7VAE4H6MAZVO/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:LPPNUNXAGZHZ2X7VAE4H6MAZVO","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":"1b84a71a209cce694cd5116896154ee39fc6266d90e28f6961acde43565a523b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-08-23T18:48:47Z","title_canon_sha256":"d44a56de338a5784ecff115dab89b040d0975a0ef3f04d754b3af48f82f364b4"},"schema_version":"1.0","source":{"id":"1508.05643","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1508.05643","created_at":"2026-05-18T01:28:03Z"},{"alias_kind":"arxiv_version","alias_value":"1508.05643v2","created_at":"2026-05-18T01:28:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1508.05643","created_at":"2026-05-18T01:28:03Z"},{"alias_kind":"pith_short_12","alias_value":"LPPNUNXAGZHZ","created_at":"2026-05-18T12:29:29Z"},{"alias_kind":"pith_short_16","alias_value":"LPPNUNXAGZHZ2X7V","created_at":"2026-05-18T12:29:29Z"},{"alias_kind":"pith_short_8","alias_value":"LPPNUNXA","created_at":"2026-05-18T12:29:29Z"}],"graph_snapshots":[{"event_id":"sha256:9c4689559251fbf03eee60ae4766002af763c0f2288aa43f11cd1c18e92842ef","target":"graph","created_at":"2026-05-18T01:28:03Z","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 have observed and spatially resolved a set of seven A-type stars in the nearby Ursa Major moving group with the Classic, CLIMB, and PAVO beam combiners on the CHARA Array. At least four of these stars have large rotational velocities ($v \\sin i$ $\\gtrsim$ 170 $\\mathrm{km~s^{-1}}$) and are expected to be oblate. These interferometric measurements, the stars' observed photometric energy distributions, and $v \\sin i$ values are used to computationally construct model oblate stars from which stellar properties (inclination, rotational velocity, and the radius and effective temperature as a func","authors_text":"C. Farrington, E. Baines, G. Schaefer, H. McAlister, Jeremy Jones, J. Patience, J. Sturmann, L. Sturmann, M. Ireland, N. Turner, P. J. Goldfinger, R. J. White, S. T. Ridgway, T. Boyajian, T. ten Brummelaar","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-08-23T18:48:47Z","title":"The Ages of A-Stars I: Interferometric Observations and Age Estimates for Stars in the Ursa Major Moving Group"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1508.05643","kind":"arxiv","version":2},"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":"sha256:647e41716d954dd1333e86d31ca7c8dc4f4ef192bb9fcd29c80ff8109b9d3033","target":"record","created_at":"2026-05-18T01:28:03Z","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":"1b84a71a209cce694cd5116896154ee39fc6266d90e28f6961acde43565a523b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-08-23T18:48:47Z","title_canon_sha256":"d44a56de338a5784ecff115dab89b040d0975a0ef3f04d754b3af48f82f364b4"},"schema_version":"1.0","source":{"id":"1508.05643","kind":"arxiv","version":2}},"canonical_sha256":"5bdeda36e0364f9d5ff501387f3019ab9d77d413b747b6193b947d66c50dcd88","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5bdeda36e0364f9d5ff501387f3019ab9d77d413b747b6193b947d66c50dcd88","first_computed_at":"2026-05-18T01:28:03.437717Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:28:03.437717Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"XtBEGcTo3upioqjBlaHVk0TGWUZ2pbpANRizdPuzZlUjgnCx5Lcd/BTbV1FLu281pAbJV7gsqVD81MhXHky4Aw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:28:03.438343Z","signed_message":"canonical_sha256_bytes"},"source_id":"1508.05643","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:647e41716d954dd1333e86d31ca7c8dc4f4ef192bb9fcd29c80ff8109b9d3033","sha256:9c4689559251fbf03eee60ae4766002af763c0f2288aa43f11cd1c18e92842ef"],"state_sha256":"870edcd47a29370a090d463674c83a7801a23566c40103f7dfd19cfa110b9717"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"t2aB6K4GktvdHXDXGk9b+xebxmExLbz+r7D7AdZbKrt+VdIWn76pgjduQeKh7Ef0GVv/nHuHWkWWONzRNsKgDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-07T17:00:52.397231Z","bundle_sha256":"ae2f44aadd473bf25d9a5ffb0d43e76e5018ace92747ecb21216b64fada2070f"}}