{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:VOCVEVOFHQV7CVKJSWPGR5DO5L","short_pith_number":"pith:VOCVEVOF","canonical_record":{"source":{"id":"2107.02844","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2021-07-06T19:01:19Z","cross_cats_sorted":[],"title_canon_sha256":"639f1868f7690a1a02b84df2417d1e57894587c661c4538f583127274ccc58be","abstract_canon_sha256":"b4407bd7a2fd2f69079111e4a3e40f571066bd96abc4fae1f0b6f9e0ad84c986"},"schema_version":"1.0"},"canonical_sha256":"ab855255c53c2bf15549959e68f46eeaf4c3f59be1e3579678cd9c610d11f13f","source":{"kind":"arxiv","id":"2107.02844","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2107.02844","created_at":"2026-07-05T03:34:29Z"},{"alias_kind":"arxiv_version","alias_value":"2107.02844v1","created_at":"2026-07-05T03:34:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2107.02844","created_at":"2026-07-05T03:34:29Z"},{"alias_kind":"pith_short_12","alias_value":"VOCVEVOFHQV7","created_at":"2026-07-05T03:34:29Z"},{"alias_kind":"pith_short_16","alias_value":"VOCVEVOFHQV7CVKJ","created_at":"2026-07-05T03:34:29Z"},{"alias_kind":"pith_short_8","alias_value":"VOCVEVOF","created_at":"2026-07-05T03:34:29Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:VOCVEVOFHQV7CVKJSWPGR5DO5L","target":"record","payload":{"canonical_record":{"source":{"id":"2107.02844","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2021-07-06T19:01:19Z","cross_cats_sorted":[],"title_canon_sha256":"639f1868f7690a1a02b84df2417d1e57894587c661c4538f583127274ccc58be","abstract_canon_sha256":"b4407bd7a2fd2f69079111e4a3e40f571066bd96abc4fae1f0b6f9e0ad84c986"},"schema_version":"1.0"},"canonical_sha256":"ab855255c53c2bf15549959e68f46eeaf4c3f59be1e3579678cd9c610d11f13f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T03:34:29.932596Z","signature_b64":"koGDeYPxhCT6ltWPKTS/BeBQBfzrXax8m1dyNZAW2Szp0Cl2rSuXZSmrpIum4Lyvt6XmMTI7NHIqbH/8ha6zDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ab855255c53c2bf15549959e68f46eeaf4c3f59be1e3579678cd9c610d11f13f","last_reissued_at":"2026-07-05T03:34:29.932145Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T03:34:29.932145Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2107.02844","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":"2026-07-05T03:34:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zG9dFxR6AskAT3ITjd1IsWXoWx+MrW9iT0TqgJvPZyFYPxll2UnBvPQD4d+pKW2iux8NxgZGtDzTTciZ78jWAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-06T11:47:13.565378Z"},"content_sha256":"6a7d4e284425448a7559079e19f94105eaf45569e24cf7431d7afb566f3a54e1","schema_version":"1.0","event_id":"sha256:6a7d4e284425448a7559079e19f94105eaf45569e24cf7431d7afb566f3a54e1"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:VOCVEVOFHQV7CVKJSWPGR5DO5L","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Establishing $\\alpha$ Oph as a Prototype Rotator: Precision Orbit with new Keck, CHARA, and RV Observations","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"(2) Tennessee State University, (3) The CHARA Array of Georgia State University, (4) University of Exeter, (5) Australian National University, (6) University of Texas at Austin, (7) Yale University), Adam L. Kraus (6), Ann Arbor, Fabien Baron (3), Francis C. Fekel (2), Gail Schaefer (3), John D. Monnier (1), Judit Sturmann (3), Laszlo Sturmann (3), Michael Ireland (5), Michael Williamson (2), Rachael M. Roettenbacher (7), Sasha Hinkley (4), Stefan Kraus (4), Theo Ten Brummelaar (3) ((1) University of Michigan, Tyler Gardner (1)","submitted_at":"2021-07-06T19:01:19Z","abstract_excerpt":"Alpha Ophiuchi (Rasalhague) is a nearby rapidly rotating A5IV star which has been imaged by infrared interferometry. $\\alpha$ Oph is also part of a known binary system, with a companion semi-major axis of $\\sim$430 milli-arcseconds and high eccentricity of 0.92. The binary companion provides the unique opportunity to measure the dynamical mass to compare with the results of rapid rotator evolution models. The lack of data near periastron passage limited the precision of mass measurements in previous work. We add new interferometric data from the MIRC combiner at the CHARA Array as well as new "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2107.02844","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/2107.02844/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":"2026-07-05T03:34:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Agx5VcM3LFcBqxTf2tKFaZHPZp4mTxlUm81nXc79Z21a4UxWzMFqlTP7vVOEBeIahMjQxvrKlzaeQ+8qznN0Dg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-06T11:47:13.565755Z"},"content_sha256":"ce428f803af68f5a71c3203b92a75518f89782a02543af8cf441b3be46bb3f27","schema_version":"1.0","event_id":"sha256:ce428f803af68f5a71c3203b92a75518f89782a02543af8cf441b3be46bb3f27"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/VOCVEVOFHQV7CVKJSWPGR5DO5L/bundle.json","state_url":"https://pith.science/pith/VOCVEVOFHQV7CVKJSWPGR5DO5L/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/VOCVEVOFHQV7CVKJSWPGR5DO5L/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":"2026-07-06T11:47:13Z","links":{"resolver":"https://pith.science/pith/VOCVEVOFHQV7CVKJSWPGR5DO5L","bundle":"https://pith.science/pith/VOCVEVOFHQV7CVKJSWPGR5DO5L/bundle.json","state":"https://pith.science/pith/VOCVEVOFHQV7CVKJSWPGR5DO5L/state.json","well_known_bundle":"https://pith.science/.well-known/pith/VOCVEVOFHQV7CVKJSWPGR5DO5L/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:VOCVEVOFHQV7CVKJSWPGR5DO5L","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":"b4407bd7a2fd2f69079111e4a3e40f571066bd96abc4fae1f0b6f9e0ad84c986","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2021-07-06T19:01:19Z","title_canon_sha256":"639f1868f7690a1a02b84df2417d1e57894587c661c4538f583127274ccc58be"},"schema_version":"1.0","source":{"id":"2107.02844","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2107.02844","created_at":"2026-07-05T03:34:29Z"},{"alias_kind":"arxiv_version","alias_value":"2107.02844v1","created_at":"2026-07-05T03:34:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2107.02844","created_at":"2026-07-05T03:34:29Z"},{"alias_kind":"pith_short_12","alias_value":"VOCVEVOFHQV7","created_at":"2026-07-05T03:34:29Z"},{"alias_kind":"pith_short_16","alias_value":"VOCVEVOFHQV7CVKJ","created_at":"2026-07-05T03:34:29Z"},{"alias_kind":"pith_short_8","alias_value":"VOCVEVOF","created_at":"2026-07-05T03:34:29Z"}],"graph_snapshots":[{"event_id":"sha256:ce428f803af68f5a71c3203b92a75518f89782a02543af8cf441b3be46bb3f27","target":"graph","created_at":"2026-07-05T03:34:29Z","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/2107.02844/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Alpha Ophiuchi (Rasalhague) is a nearby rapidly rotating A5IV star which has been imaged by infrared interferometry. $\\alpha$ Oph is also part of a known binary system, with a companion semi-major axis of $\\sim$430 milli-arcseconds and high eccentricity of 0.92. The binary companion provides the unique opportunity to measure the dynamical mass to compare with the results of rapid rotator evolution models. The lack of data near periastron passage limited the precision of mass measurements in previous work. We add new interferometric data from the MIRC combiner at the CHARA Array as well as new ","authors_text":"(2) Tennessee State University, (3) The CHARA Array of Georgia State University, (4) University of Exeter, (5) Australian National University, (6) University of Texas at Austin, (7) Yale University), Adam L. Kraus (6), Ann Arbor, Fabien Baron (3), Francis C. Fekel (2), Gail Schaefer (3), John D. Monnier (1), Judit Sturmann (3), Laszlo Sturmann (3), Michael Ireland (5), Michael Williamson (2), Rachael M. Roettenbacher (7), Sasha Hinkley (4), Stefan Kraus (4), Theo Ten Brummelaar (3) ((1) University of Michigan, Tyler Gardner (1)","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2021-07-06T19:01:19Z","title":"Establishing $\\alpha$ Oph as a Prototype Rotator: Precision Orbit with new Keck, CHARA, and RV Observations"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2107.02844","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":"sha256:6a7d4e284425448a7559079e19f94105eaf45569e24cf7431d7afb566f3a54e1","target":"record","created_at":"2026-07-05T03:34:29Z","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":"b4407bd7a2fd2f69079111e4a3e40f571066bd96abc4fae1f0b6f9e0ad84c986","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2021-07-06T19:01:19Z","title_canon_sha256":"639f1868f7690a1a02b84df2417d1e57894587c661c4538f583127274ccc58be"},"schema_version":"1.0","source":{"id":"2107.02844","kind":"arxiv","version":1}},"canonical_sha256":"ab855255c53c2bf15549959e68f46eeaf4c3f59be1e3579678cd9c610d11f13f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ab855255c53c2bf15549959e68f46eeaf4c3f59be1e3579678cd9c610d11f13f","first_computed_at":"2026-07-05T03:34:29.932145Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:34:29.932145Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"koGDeYPxhCT6ltWPKTS/BeBQBfzrXax8m1dyNZAW2Szp0Cl2rSuXZSmrpIum4Lyvt6XmMTI7NHIqbH/8ha6zDw==","signature_status":"signed_v1","signed_at":"2026-07-05T03:34:29.932596Z","signed_message":"canonical_sha256_bytes"},"source_id":"2107.02844","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6a7d4e284425448a7559079e19f94105eaf45569e24cf7431d7afb566f3a54e1","sha256:ce428f803af68f5a71c3203b92a75518f89782a02543af8cf441b3be46bb3f27"],"state_sha256":"ec47e85b4fd58d3979dfff512c6be9378bd9267f0e7894ad7f9815aa4148d48c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+RGbgGhSEUbo5wLM1zEHM0EeYLwCcLsaqa7Z42f6oAXQjlM/52LkeJEVf+WVxoLEzxaFVEeQt4Kwx4GoEQxyBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-06T11:47:13.567773Z","bundle_sha256":"126e0253bf3a86e154dc0f98f6364cc9e191aac4b754ad9e9c5005ef94e10311"}}