{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2009:L6YL4XYKA5SMNNKNXSI3OGVENB","short_pith_number":"pith:L6YL4XYK","schema_version":"1.0","canonical_sha256":"5fb0be5f0a0764c6b54dbc91b71aa4686daaed8b2b58ce81927daa43ca40b742","source":{"kind":"arxiv","id":"0908.4521","version":1},"attestation_state":"computed","paper":{"title":"Extrasolar planets and brown dwarfs around A-F type stars - VII. Theta Cygni radial velocity variations: planets or stellar phenomenon?","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.EP","authors_text":"A. Eggenberger, A.-M. Lagrange, A. Vidal-Madjar, B. Loeillet, C. Lovis, C. Moutou, C. Perrier, D. Ehrenreich, D. Queloz, D. Segransan, F. Bouchy, F. Galland, F. Pepe, F. Pont, G. Hebrard, G. Montagnier, H. Beust, I. Boisse, M. Desort, M. Mayor, N. C. Santos, N. Meunier, S. Udry, T. Forveille, X. Bonfils, X. Delfosse","submitted_at":"2009-08-31T12:40:36Z","abstract_excerpt":"(abridged) In the frame of the search for extrasolar planets and brown dwarfs around early-type main-sequence stars, we present the results obtained on the early F-type star Theta Cygni. Elodie and Sophie at OHP were used to obtain the spectra. Our dedicated radial-velocity measurement method was used to monitor the star's radial velocities over five years. We also use complementary, high angular resolution and high-contrast images taken with PUEO at CFHT. We show that Theta Cygni radial velocities are quasi-periodically variable, with a ~150-day period. These variations are not due to the ~0."},"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":"0908.4521","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2009-08-31T12:40:36Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"daecc5a2451215dbe20b84f6e37f6e14e29b9ea99cf6dcc0d42a797aa700fbcc","abstract_canon_sha256":"509c1bd0526ad3fb7a39f977ae733dd837719dfe948ce147cd513a905b6eb6bb"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:12:12.699644Z","signature_b64":"mHMMU7WltrI1bG+VcqWNLa7baMqcFmgBlE/Ed+erlhR57mHD4g13PxfTMILnhu0TM6sWA5RnY7zPg/bVhG9sBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5fb0be5f0a0764c6b54dbc91b71aa4686daaed8b2b58ce81927daa43ca40b742","last_reissued_at":"2026-05-18T02:12:12.698666Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:12:12.698666Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Extrasolar planets and brown dwarfs around A-F type stars - VII. Theta Cygni radial velocity variations: planets or stellar phenomenon?","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.EP","authors_text":"A. Eggenberger, A.-M. Lagrange, A. Vidal-Madjar, B. Loeillet, C. Lovis, C. Moutou, C. Perrier, D. Ehrenreich, D. Queloz, D. Segransan, F. Bouchy, F. Galland, F. Pepe, F. Pont, G. Hebrard, G. Montagnier, H. Beust, I. Boisse, M. Desort, M. Mayor, N. C. Santos, N. Meunier, S. Udry, T. Forveille, X. Bonfils, X. Delfosse","submitted_at":"2009-08-31T12:40:36Z","abstract_excerpt":"(abridged) In the frame of the search for extrasolar planets and brown dwarfs around early-type main-sequence stars, we present the results obtained on the early F-type star Theta Cygni. Elodie and Sophie at OHP were used to obtain the spectra. Our dedicated radial-velocity measurement method was used to monitor the star's radial velocities over five years. We also use complementary, high angular resolution and high-contrast images taken with PUEO at CFHT. We show that Theta Cygni radial velocities are quasi-periodically variable, with a ~150-day period. These variations are not due to the ~0."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0908.4521","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":"0908.4521","created_at":"2026-05-18T02:12:12.698830+00:00"},{"alias_kind":"arxiv_version","alias_value":"0908.4521v1","created_at":"2026-05-18T02:12:12.698830+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0908.4521","created_at":"2026-05-18T02:12:12.698830+00:00"},{"alias_kind":"pith_short_12","alias_value":"L6YL4XYKA5SM","created_at":"2026-05-18T12:26:00.592388+00:00"},{"alias_kind":"pith_short_16","alias_value":"L6YL4XYKA5SMNNKN","created_at":"2026-05-18T12:26:00.592388+00:00"},{"alias_kind":"pith_short_8","alias_value":"L6YL4XYK","created_at":"2026-05-18T12:26:00.592388+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/L6YL4XYKA5SMNNKNXSI3OGVENB","json":"https://pith.science/pith/L6YL4XYKA5SMNNKNXSI3OGVENB.json","graph_json":"https://pith.science/api/pith-number/L6YL4XYKA5SMNNKNXSI3OGVENB/graph.json","events_json":"https://pith.science/api/pith-number/L6YL4XYKA5SMNNKNXSI3OGVENB/events.json","paper":"https://pith.science/paper/L6YL4XYK"},"agent_actions":{"view_html":"https://pith.science/pith/L6YL4XYKA5SMNNKNXSI3OGVENB","download_json":"https://pith.science/pith/L6YL4XYKA5SMNNKNXSI3OGVENB.json","view_paper":"https://pith.science/paper/L6YL4XYK","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=0908.4521&json=true","fetch_graph":"https://pith.science/api/pith-number/L6YL4XYKA5SMNNKNXSI3OGVENB/graph.json","fetch_events":"https://pith.science/api/pith-number/L6YL4XYKA5SMNNKNXSI3OGVENB/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/L6YL4XYKA5SMNNKNXSI3OGVENB/action/timestamp_anchor","attest_storage":"https://pith.science/pith/L6YL4XYKA5SMNNKNXSI3OGVENB/action/storage_attestation","attest_author":"https://pith.science/pith/L6YL4XYKA5SMNNKNXSI3OGVENB/action/author_attestation","sign_citation":"https://pith.science/pith/L6YL4XYKA5SMNNKNXSI3OGVENB/action/citation_signature","submit_replication":"https://pith.science/pith/L6YL4XYKA5SMNNKNXSI3OGVENB/action/replication_record"}},"created_at":"2026-05-18T02:12:12.698830+00:00","updated_at":"2026-05-18T02:12:12.698830+00:00"}