{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2012:V6RIUVIXBKDVO2AM3EXRTCAHVP","short_pith_number":"pith:V6RIUVIX","schema_version":"1.0","canonical_sha256":"afa28a55170a8757680cd92f198807abea27259d0097c363fc925351188164cc","source":{"kind":"arxiv","id":"1209.4701","version":1},"attestation_state":"computed","paper":{"title":"Wesenheit Function for Galactic Cepheids: Application to the Projection Factors","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Chow-Choong Ngeow, Hilding Neilson, Massimo Marengo, Nicolas Nardetto","submitted_at":"2012-09-21T04:39:05Z","abstract_excerpt":"Galactic Cepheids are necessary tools for calibrating the period-luminosity relation, but distances to individual Galactic Cepheids are difficult to precisely measure and are limited to a small number of techniques such as direct parallax, main-sequence fitting to open clusters that host Cepheids and Baade-Wesselink (BW) methods. In this work, we re-examine the application of Wesenheit function in determining distances to more than 300 Galactic Cepheids, by taking advantage of the fact that the Wesenheit function is extinction free by definition. The Wesenheit distances were used to calibrate "},"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":"1209.4701","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-09-21T04:39:05Z","cross_cats_sorted":[],"title_canon_sha256":"2a61e6e153f993d5ad49667de44c561d8c6ed211d74378c2cbc1f4c5390df18b","abstract_canon_sha256":"73d5b9dba588e0e2189d6bffb1c820b20ff26812b6d3dc92f89a6bf75e800370"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:54:20.331612Z","signature_b64":"PffLsaNYNT54JqUofV5NRE0DBDtmVmqAzI9rDAxHc7/maDNF7aYa+52rxZXH0Ukf+S91DchPLFY5e1BQ7xPhBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"afa28a55170a8757680cd92f198807abea27259d0097c363fc925351188164cc","last_reissued_at":"2026-05-18T01:54:20.331091Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:54:20.331091Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Wesenheit Function for Galactic Cepheids: Application to the Projection Factors","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Chow-Choong Ngeow, Hilding Neilson, Massimo Marengo, Nicolas Nardetto","submitted_at":"2012-09-21T04:39:05Z","abstract_excerpt":"Galactic Cepheids are necessary tools for calibrating the period-luminosity relation, but distances to individual Galactic Cepheids are difficult to precisely measure and are limited to a small number of techniques such as direct parallax, main-sequence fitting to open clusters that host Cepheids and Baade-Wesselink (BW) methods. In this work, we re-examine the application of Wesenheit function in determining distances to more than 300 Galactic Cepheids, by taking advantage of the fact that the Wesenheit function is extinction free by definition. The Wesenheit distances were used to calibrate "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1209.4701","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":"1209.4701","created_at":"2026-05-18T01:54:20.331164+00:00"},{"alias_kind":"arxiv_version","alias_value":"1209.4701v1","created_at":"2026-05-18T01:54:20.331164+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1209.4701","created_at":"2026-05-18T01:54:20.331164+00:00"},{"alias_kind":"pith_short_12","alias_value":"V6RIUVIXBKDV","created_at":"2026-05-18T12:27:25.539911+00:00"},{"alias_kind":"pith_short_16","alias_value":"V6RIUVIXBKDVO2AM","created_at":"2026-05-18T12:27:25.539911+00:00"},{"alias_kind":"pith_short_8","alias_value":"V6RIUVIX","created_at":"2026-05-18T12:27:25.539911+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/V6RIUVIXBKDVO2AM3EXRTCAHVP","json":"https://pith.science/pith/V6RIUVIXBKDVO2AM3EXRTCAHVP.json","graph_json":"https://pith.science/api/pith-number/V6RIUVIXBKDVO2AM3EXRTCAHVP/graph.json","events_json":"https://pith.science/api/pith-number/V6RIUVIXBKDVO2AM3EXRTCAHVP/events.json","paper":"https://pith.science/paper/V6RIUVIX"},"agent_actions":{"view_html":"https://pith.science/pith/V6RIUVIXBKDVO2AM3EXRTCAHVP","download_json":"https://pith.science/pith/V6RIUVIXBKDVO2AM3EXRTCAHVP.json","view_paper":"https://pith.science/paper/V6RIUVIX","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1209.4701&json=true","fetch_graph":"https://pith.science/api/pith-number/V6RIUVIXBKDVO2AM3EXRTCAHVP/graph.json","fetch_events":"https://pith.science/api/pith-number/V6RIUVIXBKDVO2AM3EXRTCAHVP/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/V6RIUVIXBKDVO2AM3EXRTCAHVP/action/timestamp_anchor","attest_storage":"https://pith.science/pith/V6RIUVIXBKDVO2AM3EXRTCAHVP/action/storage_attestation","attest_author":"https://pith.science/pith/V6RIUVIXBKDVO2AM3EXRTCAHVP/action/author_attestation","sign_citation":"https://pith.science/pith/V6RIUVIXBKDVO2AM3EXRTCAHVP/action/citation_signature","submit_replication":"https://pith.science/pith/V6RIUVIXBKDVO2AM3EXRTCAHVP/action/replication_record"}},"created_at":"2026-05-18T01:54:20.331164+00:00","updated_at":"2026-05-18T01:54:20.331164+00:00"}