{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2017:F6H4XDUZXXTMEV2QSGLZC3FIZL","short_pith_number":"pith:F6H4XDUZ","schema_version":"1.0","canonical_sha256":"2f8fcb8e99bde6c257509197916ca8caeff388625596322eebcacaf72931fce9","source":{"kind":"arxiv","id":"1704.08875","version":1},"attestation_state":"computed","paper":{"title":"On the impact of Helium abundance on the Cepheid Period-Luminosity and Wesenheit relations and the Distance Ladder","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"E. Brocato, G. Raimondo, M. Marconi, R. Carini","submitted_at":"2017-04-28T11:17:14Z","abstract_excerpt":"This work analyses the effect of the Helium content on synthetic Period-Luminosity Relations (PLRs) and Period-Wesenheit Relations (PWRs) of Cepheids and the systematic uncertainties on the derived distances that a hidden population of He-enhanced Cepheids may generate. We use new stellar and pulsation models to build a homogeneous and consistent framework to derive the Cepheid features. The Cepheid populations expected in synthetic color-magnitude diagrams of young stellar systems (from 20 Myr to 250 Myr) are computed in several photometric bands for Y = 0.25 and Y = 0.35, at a fixed metallic"},"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":"1704.08875","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-04-28T11:17:14Z","cross_cats_sorted":[],"title_canon_sha256":"a51c4e5e65174b765688c102a036acf84faba1871a171db968ed74b1871909fc","abstract_canon_sha256":"c087f2273c3b20866371aff2e90e5ce40ad63600de39d390f9ddf4838e4422ed"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:40:03.858614Z","signature_b64":"NQ1e6uDfyuomAMhTLVdi/1tVFXmxIw5FyJ91CrAx93Tr7pZBThWOjJEyb4vvOlx352Mxib4u6POdc+1tyPcDAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2f8fcb8e99bde6c257509197916ca8caeff388625596322eebcacaf72931fce9","last_reissued_at":"2026-05-18T00:40:03.858014Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:40:03.858014Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"On the impact of Helium abundance on the Cepheid Period-Luminosity and Wesenheit relations and the Distance Ladder","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"E. Brocato, G. Raimondo, M. Marconi, R. Carini","submitted_at":"2017-04-28T11:17:14Z","abstract_excerpt":"This work analyses the effect of the Helium content on synthetic Period-Luminosity Relations (PLRs) and Period-Wesenheit Relations (PWRs) of Cepheids and the systematic uncertainties on the derived distances that a hidden population of He-enhanced Cepheids may generate. We use new stellar and pulsation models to build a homogeneous and consistent framework to derive the Cepheid features. The Cepheid populations expected in synthetic color-magnitude diagrams of young stellar systems (from 20 Myr to 250 Myr) are computed in several photometric bands for Y = 0.25 and Y = 0.35, at a fixed metallic"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1704.08875","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":"1704.08875","created_at":"2026-05-18T00:40:03.858098+00:00"},{"alias_kind":"arxiv_version","alias_value":"1704.08875v1","created_at":"2026-05-18T00:40:03.858098+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1704.08875","created_at":"2026-05-18T00:40:03.858098+00:00"},{"alias_kind":"pith_short_12","alias_value":"F6H4XDUZXXTM","created_at":"2026-05-18T12:31:15.632608+00:00"},{"alias_kind":"pith_short_16","alias_value":"F6H4XDUZXXTMEV2Q","created_at":"2026-05-18T12:31:15.632608+00:00"},{"alias_kind":"pith_short_8","alias_value":"F6H4XDUZ","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/F6H4XDUZXXTMEV2QSGLZC3FIZL","json":"https://pith.science/pith/F6H4XDUZXXTMEV2QSGLZC3FIZL.json","graph_json":"https://pith.science/api/pith-number/F6H4XDUZXXTMEV2QSGLZC3FIZL/graph.json","events_json":"https://pith.science/api/pith-number/F6H4XDUZXXTMEV2QSGLZC3FIZL/events.json","paper":"https://pith.science/paper/F6H4XDUZ"},"agent_actions":{"view_html":"https://pith.science/pith/F6H4XDUZXXTMEV2QSGLZC3FIZL","download_json":"https://pith.science/pith/F6H4XDUZXXTMEV2QSGLZC3FIZL.json","view_paper":"https://pith.science/paper/F6H4XDUZ","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1704.08875&json=true","fetch_graph":"https://pith.science/api/pith-number/F6H4XDUZXXTMEV2QSGLZC3FIZL/graph.json","fetch_events":"https://pith.science/api/pith-number/F6H4XDUZXXTMEV2QSGLZC3FIZL/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/F6H4XDUZXXTMEV2QSGLZC3FIZL/action/timestamp_anchor","attest_storage":"https://pith.science/pith/F6H4XDUZXXTMEV2QSGLZC3FIZL/action/storage_attestation","attest_author":"https://pith.science/pith/F6H4XDUZXXTMEV2QSGLZC3FIZL/action/author_attestation","sign_citation":"https://pith.science/pith/F6H4XDUZXXTMEV2QSGLZC3FIZL/action/citation_signature","submit_replication":"https://pith.science/pith/F6H4XDUZXXTMEV2QSGLZC3FIZL/action/replication_record"}},"created_at":"2026-05-18T00:40:03.858098+00:00","updated_at":"2026-05-18T00:40:03.858098+00:00"}