{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:UC67AYEM5EZSQPBATP7B6RMZ7E","short_pith_number":"pith:UC67AYEM","canonical_record":{"source":{"id":"1905.06440","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2019-05-15T21:29:35Z","cross_cats_sorted":[],"title_canon_sha256":"2d133cd599f05a4c5b7c37a3c3788e63394f823e9c33ecd04ddc8cc874c7e530","abstract_canon_sha256":"b501e20369745a2ab2885bd58be6aa8b0a9d2a28b4f0d3593e6c014b2b383cd1"},"schema_version":"1.0"},"canonical_sha256":"a0bdf0608ce933283c209bfe1f4599f910d626e47c6bf7e8694df24ba96f8718","source":{"kind":"arxiv","id":"1905.06440","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1905.06440","created_at":"2026-05-17T23:43:02Z"},{"alias_kind":"arxiv_version","alias_value":"1905.06440v2","created_at":"2026-05-17T23:43:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1905.06440","created_at":"2026-05-17T23:43:02Z"},{"alias_kind":"pith_short_12","alias_value":"UC67AYEM5EZS","created_at":"2026-05-18T12:33:30Z"},{"alias_kind":"pith_short_16","alias_value":"UC67AYEM5EZSQPBA","created_at":"2026-05-18T12:33:30Z"},{"alias_kind":"pith_short_8","alias_value":"UC67AYEM","created_at":"2026-05-18T12:33:30Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:UC67AYEM5EZSQPBATP7B6RMZ7E","target":"record","payload":{"canonical_record":{"source":{"id":"1905.06440","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2019-05-15T21:29:35Z","cross_cats_sorted":[],"title_canon_sha256":"2d133cd599f05a4c5b7c37a3c3788e63394f823e9c33ecd04ddc8cc874c7e530","abstract_canon_sha256":"b501e20369745a2ab2885bd58be6aa8b0a9d2a28b4f0d3593e6c014b2b383cd1"},"schema_version":"1.0"},"canonical_sha256":"a0bdf0608ce933283c209bfe1f4599f910d626e47c6bf7e8694df24ba96f8718","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:43:02.073360Z","signature_b64":"QKjzP/i/rECNoKwjNpPZIOPEfnHfQXeitT1gKH+Z+ZFvTj9l+DS3N4F6/c9qWLoY5s2ak77FFNivMp/QQZs2DA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a0bdf0608ce933283c209bfe1f4599f910d626e47c6bf7e8694df24ba96f8718","last_reissued_at":"2026-05-17T23:43:02.072776Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:43:02.072776Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1905.06440","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":"2026-05-17T23:43:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"X35ErbeyaZUa0+Ft/d8p2MeeqcEuBzqxuS5xiyzKNNklRLDpor/1iM+mFhnb6PkZDH9iFmm1iQ0XsXW+QvdfDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T03:30:51.379112Z"},"content_sha256":"0c37e7cca0dffeaf9993b8f23992e8e07d364143ea4a12ba3a81eb777afd155e","schema_version":"1.0","event_id":"sha256:0c37e7cca0dffeaf9993b8f23992e8e07d364143ea4a12ba3a81eb777afd155e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:UC67AYEM5EZSQPBATP7B6RMZ7E","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Discovery of a White Dwarf Companion to HD 159062","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Andrew W. Howard, Benjamin J. Fulton, David R. Ciardi, Dimitri Mawet, Erica Gonzalez, Evan Sinukoff, Garreth Ruane, Geoffrey W. Marcy, Howard Isaacson, Justin R. Crepp, Lauren Weiss, Lea A. Hirsch, Molly Kosiarek, Sarah Blunt","submitted_at":"2019-05-15T21:29:35Z","abstract_excerpt":"We report on the discovery of a white dwarf companion to the nearby late G dwarf star, HD 159062. The companion is detected in 14 years of precise radial velocity (RV) data, and in high-resolution imaging observations. RVs of HD 159062 from 2003-2018 reveal an acceleration of $-13.3\\pm0.12\\ \\rm{m s}^{-1}$, indicating that it hosts a companion with a long-period orbit. Subsequent imaging observations with the ShaneAO system on the Lick Observatory 3-meter Shane telescope, the PHARO AO system on the Palomar Observatory 5-meter telescope, and the NIRC2 AO system at the Keck II 10-meter telescope "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1905.06440","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":"2026-05-17T23:43:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"V3pC2HMUB8GvCctrSy5d3r2QVsnLljlTd/tcJ9DWMaM1AjswV4uw42/GgAcGi8AyFaE4S85TJiayr3ekCaZlCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T03:30:51.379479Z"},"content_sha256":"b65fb09dd58cf7639f2ad7999ddd9572210c750f71c6a5f1448f5e25e7148b89","schema_version":"1.0","event_id":"sha256:b65fb09dd58cf7639f2ad7999ddd9572210c750f71c6a5f1448f5e25e7148b89"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/UC67AYEM5EZSQPBATP7B6RMZ7E/bundle.json","state_url":"https://pith.science/pith/UC67AYEM5EZSQPBATP7B6RMZ7E/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/UC67AYEM5EZSQPBATP7B6RMZ7E/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":"2026-05-28T03:30:51Z","links":{"resolver":"https://pith.science/pith/UC67AYEM5EZSQPBATP7B6RMZ7E","bundle":"https://pith.science/pith/UC67AYEM5EZSQPBATP7B6RMZ7E/bundle.json","state":"https://pith.science/pith/UC67AYEM5EZSQPBATP7B6RMZ7E/state.json","well_known_bundle":"https://pith.science/.well-known/pith/UC67AYEM5EZSQPBATP7B6RMZ7E/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:UC67AYEM5EZSQPBATP7B6RMZ7E","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":"b501e20369745a2ab2885bd58be6aa8b0a9d2a28b4f0d3593e6c014b2b383cd1","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2019-05-15T21:29:35Z","title_canon_sha256":"2d133cd599f05a4c5b7c37a3c3788e63394f823e9c33ecd04ddc8cc874c7e530"},"schema_version":"1.0","source":{"id":"1905.06440","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1905.06440","created_at":"2026-05-17T23:43:02Z"},{"alias_kind":"arxiv_version","alias_value":"1905.06440v2","created_at":"2026-05-17T23:43:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1905.06440","created_at":"2026-05-17T23:43:02Z"},{"alias_kind":"pith_short_12","alias_value":"UC67AYEM5EZS","created_at":"2026-05-18T12:33:30Z"},{"alias_kind":"pith_short_16","alias_value":"UC67AYEM5EZSQPBA","created_at":"2026-05-18T12:33:30Z"},{"alias_kind":"pith_short_8","alias_value":"UC67AYEM","created_at":"2026-05-18T12:33:30Z"}],"graph_snapshots":[{"event_id":"sha256:b65fb09dd58cf7639f2ad7999ddd9572210c750f71c6a5f1448f5e25e7148b89","target":"graph","created_at":"2026-05-17T23:43:02Z","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":"We report on the discovery of a white dwarf companion to the nearby late G dwarf star, HD 159062. The companion is detected in 14 years of precise radial velocity (RV) data, and in high-resolution imaging observations. RVs of HD 159062 from 2003-2018 reveal an acceleration of $-13.3\\pm0.12\\ \\rm{m s}^{-1}$, indicating that it hosts a companion with a long-period orbit. Subsequent imaging observations with the ShaneAO system on the Lick Observatory 3-meter Shane telescope, the PHARO AO system on the Palomar Observatory 5-meter telescope, and the NIRC2 AO system at the Keck II 10-meter telescope ","authors_text":"Andrew W. Howard, Benjamin J. Fulton, David R. Ciardi, Dimitri Mawet, Erica Gonzalez, Evan Sinukoff, Garreth Ruane, Geoffrey W. Marcy, Howard Isaacson, Justin R. Crepp, Lauren Weiss, Lea A. Hirsch, Molly Kosiarek, Sarah Blunt","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2019-05-15T21:29:35Z","title":"Discovery of a White Dwarf Companion to HD 159062"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1905.06440","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":"sha256:0c37e7cca0dffeaf9993b8f23992e8e07d364143ea4a12ba3a81eb777afd155e","target":"record","created_at":"2026-05-17T23:43:02Z","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":"b501e20369745a2ab2885bd58be6aa8b0a9d2a28b4f0d3593e6c014b2b383cd1","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2019-05-15T21:29:35Z","title_canon_sha256":"2d133cd599f05a4c5b7c37a3c3788e63394f823e9c33ecd04ddc8cc874c7e530"},"schema_version":"1.0","source":{"id":"1905.06440","kind":"arxiv","version":2}},"canonical_sha256":"a0bdf0608ce933283c209bfe1f4599f910d626e47c6bf7e8694df24ba96f8718","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a0bdf0608ce933283c209bfe1f4599f910d626e47c6bf7e8694df24ba96f8718","first_computed_at":"2026-05-17T23:43:02.072776Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:43:02.072776Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"QKjzP/i/rECNoKwjNpPZIOPEfnHfQXeitT1gKH+Z+ZFvTj9l+DS3N4F6/c9qWLoY5s2ak77FFNivMp/QQZs2DA==","signature_status":"signed_v1","signed_at":"2026-05-17T23:43:02.073360Z","signed_message":"canonical_sha256_bytes"},"source_id":"1905.06440","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0c37e7cca0dffeaf9993b8f23992e8e07d364143ea4a12ba3a81eb777afd155e","sha256:b65fb09dd58cf7639f2ad7999ddd9572210c750f71c6a5f1448f5e25e7148b89"],"state_sha256":"4ce119185835a6ce16ddcfe823075684acb0799bfd665c22788dd928933faf20"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uTNl40AZGYnHe2sXJRnqkjOFyW1iErDN6DZ2MicCQD3maICJyKiWpyFqBXZYc2wJkeML3aUsjWcBMa0TUkGwBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T03:30:51.381483Z","bundle_sha256":"d72888890939f13f1b2ef0aee822091a963e086147eeecaf557d5d452ece95de"}}