{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2012:TNXIKZVTOQIZ27OFSBQEXXF6E6","short_pith_number":"pith:TNXIKZVT","schema_version":"1.0","canonical_sha256":"9b6e8566b374119d7dc590604bdcbe27baf553c620464ef49cd7639fd6c3100f","source":{"kind":"arxiv","id":"1202.1564","version":1},"attestation_state":"computed","paper":{"title":"Long-term magnetic activity of a sample of M-dwarf stars from the HARPS program II. Activity and radial velocity","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.EP"],"primary_cat":"astro-ph.SR","authors_text":"C. Lovis, J. Gomes da Silva, N. C. Santos, S. Udry, T. Forveille, X. Bonfils, X. Delfosse, X. Dumusque","submitted_at":"2012-02-07T23:52:08Z","abstract_excerpt":"Due to their low mass and luminosity, M dwarfs are ideal targets if one hopes to find low-mass planets similar to Earth by using the radial velocity (RV) method. However, stellar magnetic cycles could add noise or even mimic the RV signal of a long-period companion. Following our previous work that studied the correlation between activity cycles and long-term RV variations for K dwarfs we now expand that research to the lower-end of the main sequence. Our objective is to detect any correlations between long-term activity variations and the observed RV of a sample of M dwarfs. We used a sample "},"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":"1202.1564","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-02-07T23:52:08Z","cross_cats_sorted":["astro-ph.EP"],"title_canon_sha256":"0cefc16c6734dd3f196bfa1b35afd4d3be1c2aa575e5611459157da76e427954","abstract_canon_sha256":"d32189968cf3b4c8eb2460c839f70e38c6847e73ec3abe7249687756eaa87578"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:58:32.630071Z","signature_b64":"EKdcWbJORiOzvH/dDRWGuJr69hCBnCriepNSCsNuMwX52axIF/VbdKyhkLBniiByObe4HnagSWdBPpCCPlJVBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9b6e8566b374119d7dc590604bdcbe27baf553c620464ef49cd7639fd6c3100f","last_reissued_at":"2026-05-18T01:58:32.629479Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:58:32.629479Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Long-term magnetic activity of a sample of M-dwarf stars from the HARPS program II. Activity and radial velocity","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.EP"],"primary_cat":"astro-ph.SR","authors_text":"C. Lovis, J. Gomes da Silva, N. C. Santos, S. Udry, T. Forveille, X. Bonfils, X. Delfosse, X. Dumusque","submitted_at":"2012-02-07T23:52:08Z","abstract_excerpt":"Due to their low mass and luminosity, M dwarfs are ideal targets if one hopes to find low-mass planets similar to Earth by using the radial velocity (RV) method. However, stellar magnetic cycles could add noise or even mimic the RV signal of a long-period companion. Following our previous work that studied the correlation between activity cycles and long-term RV variations for K dwarfs we now expand that research to the lower-end of the main sequence. Our objective is to detect any correlations between long-term activity variations and the observed RV of a sample of M dwarfs. We used a sample "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1202.1564","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":"1202.1564","created_at":"2026-05-18T01:58:32.629575+00:00"},{"alias_kind":"arxiv_version","alias_value":"1202.1564v1","created_at":"2026-05-18T01:58:32.629575+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1202.1564","created_at":"2026-05-18T01:58:32.629575+00:00"},{"alias_kind":"pith_short_12","alias_value":"TNXIKZVTOQIZ","created_at":"2026-05-18T12:27:23.164592+00:00"},{"alias_kind":"pith_short_16","alias_value":"TNXIKZVTOQIZ27OF","created_at":"2026-05-18T12:27:23.164592+00:00"},{"alias_kind":"pith_short_8","alias_value":"TNXIKZVT","created_at":"2026-05-18T12:27:23.164592+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":1,"sample":[{"citing_arxiv_id":"2605.18151","citing_title":"Testing the reliability of magnetic field strength measurements for M dwarfs","ref_index":15,"is_internal_anchor":true}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/TNXIKZVTOQIZ27OFSBQEXXF6E6","json":"https://pith.science/pith/TNXIKZVTOQIZ27OFSBQEXXF6E6.json","graph_json":"https://pith.science/api/pith-number/TNXIKZVTOQIZ27OFSBQEXXF6E6/graph.json","events_json":"https://pith.science/api/pith-number/TNXIKZVTOQIZ27OFSBQEXXF6E6/events.json","paper":"https://pith.science/paper/TNXIKZVT"},"agent_actions":{"view_html":"https://pith.science/pith/TNXIKZVTOQIZ27OFSBQEXXF6E6","download_json":"https://pith.science/pith/TNXIKZVTOQIZ27OFSBQEXXF6E6.json","view_paper":"https://pith.science/paper/TNXIKZVT","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1202.1564&json=true","fetch_graph":"https://pith.science/api/pith-number/TNXIKZVTOQIZ27OFSBQEXXF6E6/graph.json","fetch_events":"https://pith.science/api/pith-number/TNXIKZVTOQIZ27OFSBQEXXF6E6/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/TNXIKZVTOQIZ27OFSBQEXXF6E6/action/timestamp_anchor","attest_storage":"https://pith.science/pith/TNXIKZVTOQIZ27OFSBQEXXF6E6/action/storage_attestation","attest_author":"https://pith.science/pith/TNXIKZVTOQIZ27OFSBQEXXF6E6/action/author_attestation","sign_citation":"https://pith.science/pith/TNXIKZVTOQIZ27OFSBQEXXF6E6/action/citation_signature","submit_replication":"https://pith.science/pith/TNXIKZVTOQIZ27OFSBQEXXF6E6/action/replication_record"}},"created_at":"2026-05-18T01:58:32.629575+00:00","updated_at":"2026-05-18T01:58:32.629575+00:00"}