{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2021:ZEQ52NZWP57RP5CNQTHBKFP5PO","short_pith_number":"pith:ZEQ52NZW","schema_version":"1.0","canonical_sha256":"c921dd37367f7f17f44d84ce1515fd7ba0e05f7aef82da05a0e83ce079a0f96e","source":{"kind":"arxiv","id":"2104.07934","version":3},"attestation_state":"computed","paper":{"title":"Binary Central Stars of Planetary Nebulae Identified With Kepler/K2","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Alison F. Crocker, David Jones, George H. Jacoby, Jonathan L. Hurowitz, Josh Dey, Kayla Martin, Matthias Kronberger, Orsola De Marco, Todd C. Hillwig","submitted_at":"2021-04-16T07:30:32Z","abstract_excerpt":"We present the identification of 34 likely binary central stars (CSs) of planetary nebulae (PNe) from {\\it Kepler/K2} data, seven of which show eclipses. Of these, 29 are new discoveries. Two additional CSs with more complicated variability are also presented. We examined the light curves of all `possible', `likely' and `true' PNe in every {\\it Kepler/K2} campaign (0 through 19) to identify CS variability that may indicate a binary CS. For Campaigns 0, 2, 7, 15, and 16 we find 6 likely or confirmed variables among 21 PNe. Our primary effort, though, was focused on Campaign 11 which targeted a "},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"2104.07934","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2021-04-16T07:30:32Z","cross_cats_sorted":[],"title_canon_sha256":"92b98e679e5d79ab5444afb9680ea2c5c1f5f2b7f10e54c93d53a495fee46e1d","abstract_canon_sha256":"88240c4a791c762a04ec51a8aeb4b812247eeb520381409dbc03042a8bd8894b"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T03:06:23.856671Z","signature_b64":"Bzcg/ZqHdjVPtS82pK+nEsCIn2bHaIuyv6bJwLOh+XGo0EfozZM4wtij8EeoHR/0gAhSyQlOgMV52AsGaa7DDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c921dd37367f7f17f44d84ce1515fd7ba0e05f7aef82da05a0e83ce079a0f96e","last_reissued_at":"2026-07-05T03:06:23.856158Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T03:06:23.856158Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Binary Central Stars of Planetary Nebulae Identified With Kepler/K2","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Alison F. Crocker, David Jones, George H. Jacoby, Jonathan L. Hurowitz, Josh Dey, Kayla Martin, Matthias Kronberger, Orsola De Marco, Todd C. Hillwig","submitted_at":"2021-04-16T07:30:32Z","abstract_excerpt":"We present the identification of 34 likely binary central stars (CSs) of planetary nebulae (PNe) from {\\it Kepler/K2} data, seven of which show eclipses. Of these, 29 are new discoveries. Two additional CSs with more complicated variability are also presented. We examined the light curves of all `possible', `likely' and `true' PNe in every {\\it Kepler/K2} campaign (0 through 19) to identify CS variability that may indicate a binary CS. For Campaigns 0, 2, 7, 15, and 16 we find 6 likely or confirmed variables among 21 PNe. Our primary effort, though, was focused on Campaign 11 which targeted a "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2104.07934","kind":"arxiv","version":3},"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/2104.07934/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"},"aliases":[{"alias_kind":"arxiv","alias_value":"2104.07934","created_at":"2026-07-05T03:06:23.856213+00:00"},{"alias_kind":"arxiv_version","alias_value":"2104.07934v3","created_at":"2026-07-05T03:06:23.856213+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2104.07934","created_at":"2026-07-05T03:06:23.856213+00:00"},{"alias_kind":"pith_short_12","alias_value":"ZEQ52NZWP57R","created_at":"2026-07-05T03:06:23.856213+00:00"},{"alias_kind":"pith_short_16","alias_value":"ZEQ52NZWP57RP5CN","created_at":"2026-07-05T03:06:23.856213+00:00"},{"alias_kind":"pith_short_8","alias_value":"ZEQ52NZW","created_at":"2026-07-05T03:06:23.856213+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/ZEQ52NZWP57RP5CNQTHBKFP5PO","json":"https://pith.science/pith/ZEQ52NZWP57RP5CNQTHBKFP5PO.json","graph_json":"https://pith.science/api/pith-number/ZEQ52NZWP57RP5CNQTHBKFP5PO/graph.json","events_json":"https://pith.science/api/pith-number/ZEQ52NZWP57RP5CNQTHBKFP5PO/events.json","paper":"https://pith.science/paper/ZEQ52NZW"},"agent_actions":{"view_html":"https://pith.science/pith/ZEQ52NZWP57RP5CNQTHBKFP5PO","download_json":"https://pith.science/pith/ZEQ52NZWP57RP5CNQTHBKFP5PO.json","view_paper":"https://pith.science/paper/ZEQ52NZW","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2104.07934&json=true","fetch_graph":"https://pith.science/api/pith-number/ZEQ52NZWP57RP5CNQTHBKFP5PO/graph.json","fetch_events":"https://pith.science/api/pith-number/ZEQ52NZWP57RP5CNQTHBKFP5PO/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/ZEQ52NZWP57RP5CNQTHBKFP5PO/action/timestamp_anchor","attest_storage":"https://pith.science/pith/ZEQ52NZWP57RP5CNQTHBKFP5PO/action/storage_attestation","attest_author":"https://pith.science/pith/ZEQ52NZWP57RP5CNQTHBKFP5PO/action/author_attestation","sign_citation":"https://pith.science/pith/ZEQ52NZWP57RP5CNQTHBKFP5PO/action/citation_signature","submit_replication":"https://pith.science/pith/ZEQ52NZWP57RP5CNQTHBKFP5PO/action/replication_record"}},"created_at":"2026-07-05T03:06:23.856213+00:00","updated_at":"2026-07-05T03:06:23.856213+00:00"}