{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2017:G5QHYXMBBWZYTPILLEUXXUCMH2","short_pith_number":"pith:G5QHYXMB","schema_version":"1.0","canonical_sha256":"37607c5d810db389bd0b59297bd04c3e8303ba22b09c39b327884d3566c38a27","source":{"kind":"arxiv","id":"1709.03913","version":1},"attestation_state":"computed","paper":{"title":"Chromospheric Activity of HAT-P-11: an Unusually Active Planet-Hosting K Star","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.EP"],"primary_cat":"astro-ph.SR","authors_text":"Andrew W. Howard, Benjamin T. Montet, Brett M. Morris, Charli Sakari, Eric Agol, Howard Isaacson, James. R. A. Davenport, Leslie Hebb, Suzanne L. Hawley","submitted_at":"2017-09-12T15:33:36Z","abstract_excerpt":"Kepler photometry of the hot Neptune host star HAT-P-11 suggests that its spot latitude distribution is comparable to the Sun's near solar maximum. We search for evidence of an activity cycle in the CaII H & K chromospheric emission $S$-index with archival Keck/HIRES spectra and observations from the echelle spectrograph on the ARC 3.5 m Telescope at APO. The chromospheric emission of HAT-P-11 is consistent with a $\\gtrsim 10$ year activity cycle, which plateaued near maximum during the Kepler mission. In the cycle that we observed, the star seemed to spend more time near active maximum than m"},"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":"1709.03913","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2017-09-12T15:33:36Z","cross_cats_sorted":["astro-ph.EP"],"title_canon_sha256":"aefbb9ad41bc77353d191a48c1ad4bd980d634b86c05693677741992c77b530d","abstract_canon_sha256":"10319a250a3a8519dad8160e1a09dec808ebccad53fd5c633b2a7c100bf29e4f"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:32:38.961610Z","signature_b64":"QIitZfKBKHSBODWfFPSgc4r3F2trCd0+rhoSVHktjC1HwiZvRVsYOMazCjgpDwtGSx6paMw1Sp+xPQkGDBp9AQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"37607c5d810db389bd0b59297bd04c3e8303ba22b09c39b327884d3566c38a27","last_reissued_at":"2026-05-18T00:32:38.960944Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:32:38.960944Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Chromospheric Activity of HAT-P-11: an Unusually Active Planet-Hosting K Star","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.EP"],"primary_cat":"astro-ph.SR","authors_text":"Andrew W. Howard, Benjamin T. Montet, Brett M. Morris, Charli Sakari, Eric Agol, Howard Isaacson, James. R. A. Davenport, Leslie Hebb, Suzanne L. Hawley","submitted_at":"2017-09-12T15:33:36Z","abstract_excerpt":"Kepler photometry of the hot Neptune host star HAT-P-11 suggests that its spot latitude distribution is comparable to the Sun's near solar maximum. We search for evidence of an activity cycle in the CaII H & K chromospheric emission $S$-index with archival Keck/HIRES spectra and observations from the echelle spectrograph on the ARC 3.5 m Telescope at APO. The chromospheric emission of HAT-P-11 is consistent with a $\\gtrsim 10$ year activity cycle, which plateaued near maximum during the Kepler mission. In the cycle that we observed, the star seemed to spend more time near active maximum than m"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1709.03913","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1709.03913","created_at":"2026-05-18T00:32:38.961039+00:00"},{"alias_kind":"arxiv_version","alias_value":"1709.03913v1","created_at":"2026-05-18T00:32:38.961039+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1709.03913","created_at":"2026-05-18T00:32:38.961039+00:00"},{"alias_kind":"pith_short_12","alias_value":"G5QHYXMBBWZY","created_at":"2026-05-18T12:31:15.632608+00:00"},{"alias_kind":"pith_short_16","alias_value":"G5QHYXMBBWZYTPIL","created_at":"2026-05-18T12:31:15.632608+00:00"},{"alias_kind":"pith_short_8","alias_value":"G5QHYXMB","created_at":"2026-05-18T12:31:15.632608+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/G5QHYXMBBWZYTPILLEUXXUCMH2","json":"https://pith.science/pith/G5QHYXMBBWZYTPILLEUXXUCMH2.json","graph_json":"https://pith.science/api/pith-number/G5QHYXMBBWZYTPILLEUXXUCMH2/graph.json","events_json":"https://pith.science/api/pith-number/G5QHYXMBBWZYTPILLEUXXUCMH2/events.json","paper":"https://pith.science/paper/G5QHYXMB"},"agent_actions":{"view_html":"https://pith.science/pith/G5QHYXMBBWZYTPILLEUXXUCMH2","download_json":"https://pith.science/pith/G5QHYXMBBWZYTPILLEUXXUCMH2.json","view_paper":"https://pith.science/paper/G5QHYXMB","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1709.03913&json=true","fetch_graph":"https://pith.science/api/pith-number/G5QHYXMBBWZYTPILLEUXXUCMH2/graph.json","fetch_events":"https://pith.science/api/pith-number/G5QHYXMBBWZYTPILLEUXXUCMH2/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/G5QHYXMBBWZYTPILLEUXXUCMH2/action/timestamp_anchor","attest_storage":"https://pith.science/pith/G5QHYXMBBWZYTPILLEUXXUCMH2/action/storage_attestation","attest_author":"https://pith.science/pith/G5QHYXMBBWZYTPILLEUXXUCMH2/action/author_attestation","sign_citation":"https://pith.science/pith/G5QHYXMBBWZYTPILLEUXXUCMH2/action/citation_signature","submit_replication":"https://pith.science/pith/G5QHYXMBBWZYTPILLEUXXUCMH2/action/replication_record"}},"created_at":"2026-05-18T00:32:38.961039+00:00","updated_at":"2026-05-18T00:32:38.961039+00:00"}