{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2017:QWWWGSCMCWMHZWV24P4AHZWKZX","short_pith_number":"pith:QWWWGSCM","schema_version":"1.0","canonical_sha256":"85ad63484c15987cdabae3f803e6cacddc00e2527918c0e617bbe43d1e809ccc","source":{"kind":"arxiv","id":"1712.02097","version":3},"attestation_state":"computed","paper":{"title":"Radial Velocity Observations of Classical Pulsating Stars","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Richard I. Anderson","submitted_at":"2017-12-06T09:19:37Z","abstract_excerpt":"I concisely review the history, applications, and recent developments pertaining to radial velocity (RV) observations of classical pulsating stars. The focus lies on type-I (classical) Cepheids, although the historical overview and most technical aspects are also relevant for RR Lyrae stars and type-II Cepheids. The presence and impact of velocity gradients and different experimental setups on measured RV variability curves are discussed in some detail. Among the recent developments, modulated spectral line variability results in modulated RV curves that represent an issue for Baade-Wesselink-"},"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":"1712.02097","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2017-12-06T09:19:37Z","cross_cats_sorted":[],"title_canon_sha256":"916f0d4eb000f9f4582699c891e7a9ec150b62572a9d4fe98ce8dd7c5f9c1bbe","abstract_canon_sha256":"599013cd1994a30de715ab105e1360310df65dabe1775ebbeb75f2f56cc16900"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:24:03.869136Z","signature_b64":"0zrxkqyJ5TT+Vrh1nb5434Itg5TdvpuOwIYDcTJHkkiXeT+TQJtIAtYKnm7PJGdF9OumGEDwKoC7QYLFp2Z3Ag==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"85ad63484c15987cdabae3f803e6cacddc00e2527918c0e617bbe43d1e809ccc","last_reissued_at":"2026-05-18T00:24:03.868607Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:24:03.868607Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Radial Velocity Observations of Classical Pulsating Stars","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Richard I. Anderson","submitted_at":"2017-12-06T09:19:37Z","abstract_excerpt":"I concisely review the history, applications, and recent developments pertaining to radial velocity (RV) observations of classical pulsating stars. The focus lies on type-I (classical) Cepheids, although the historical overview and most technical aspects are also relevant for RR Lyrae stars and type-II Cepheids. The presence and impact of velocity gradients and different experimental setups on measured RV variability curves are discussed in some detail. Among the recent developments, modulated spectral line variability results in modulated RV curves that represent an issue for Baade-Wesselink-"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1712.02097","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":""},"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":"1712.02097","created_at":"2026-05-18T00:24:03.868692+00:00"},{"alias_kind":"arxiv_version","alias_value":"1712.02097v3","created_at":"2026-05-18T00:24:03.868692+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1712.02097","created_at":"2026-05-18T00:24:03.868692+00:00"},{"alias_kind":"pith_short_12","alias_value":"QWWWGSCMCWMH","created_at":"2026-05-18T12:31:39.905425+00:00"},{"alias_kind":"pith_short_16","alias_value":"QWWWGSCMCWMHZWV2","created_at":"2026-05-18T12:31:39.905425+00:00"},{"alias_kind":"pith_short_8","alias_value":"QWWWGSCM","created_at":"2026-05-18T12:31:39.905425+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/QWWWGSCMCWMHZWV24P4AHZWKZX","json":"https://pith.science/pith/QWWWGSCMCWMHZWV24P4AHZWKZX.json","graph_json":"https://pith.science/api/pith-number/QWWWGSCMCWMHZWV24P4AHZWKZX/graph.json","events_json":"https://pith.science/api/pith-number/QWWWGSCMCWMHZWV24P4AHZWKZX/events.json","paper":"https://pith.science/paper/QWWWGSCM"},"agent_actions":{"view_html":"https://pith.science/pith/QWWWGSCMCWMHZWV24P4AHZWKZX","download_json":"https://pith.science/pith/QWWWGSCMCWMHZWV24P4AHZWKZX.json","view_paper":"https://pith.science/paper/QWWWGSCM","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1712.02097&json=true","fetch_graph":"https://pith.science/api/pith-number/QWWWGSCMCWMHZWV24P4AHZWKZX/graph.json","fetch_events":"https://pith.science/api/pith-number/QWWWGSCMCWMHZWV24P4AHZWKZX/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/QWWWGSCMCWMHZWV24P4AHZWKZX/action/timestamp_anchor","attest_storage":"https://pith.science/pith/QWWWGSCMCWMHZWV24P4AHZWKZX/action/storage_attestation","attest_author":"https://pith.science/pith/QWWWGSCMCWMHZWV24P4AHZWKZX/action/author_attestation","sign_citation":"https://pith.science/pith/QWWWGSCMCWMHZWV24P4AHZWKZX/action/citation_signature","submit_replication":"https://pith.science/pith/QWWWGSCMCWMHZWV24P4AHZWKZX/action/replication_record"}},"created_at":"2026-05-18T00:24:03.868692+00:00","updated_at":"2026-05-18T00:24:03.868692+00:00"}