{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2015:SBO2Q42VFHW64BQUWJKL35KFFF","short_pith_number":"pith:SBO2Q42V","schema_version":"1.0","canonical_sha256":"905da8735529edee0614b254bdf54529748ccd0d7c9a9c94f431a6a424547fc3","source":{"kind":"arxiv","id":"1507.07523","version":2},"attestation_state":"computed","paper":{"title":"On the Impact of Cepheid Outliers on the Distance Ladder","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"E. Rozo, E. S. Rykoff, H. Desmond, M. R. Becker, P. Marshall","submitted_at":"2015-07-27T18:49:28Z","abstract_excerpt":"Recent work by Efstathiou (2014) highlighted the importance of outliers in the period-luminosity (PL) relation of Cepheid data on the distance ladder. We present a statistical framework designed to address this difficulty, and apply it to the Cepheid data from the Milky Way (MW), the Large Magellanic Cloud (LMC), and the Riess et al. (2011) (hereafter R11) dataset. We consider two possible models of the outlier population in the R11 Cepheid dataset. One of these models exhibits tension between the PL relation of the R11 cepheids and the MW+LMC cepheids, while the other does not. We extend our "},"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":"1507.07523","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2015-07-27T18:49:28Z","cross_cats_sorted":[],"title_canon_sha256":"42f03b8c45f8013b6a7897056d6f3ec0bd956868f87fb1fe88167c2f4a8e5d51","abstract_canon_sha256":"801da2911bd42dd284a2a029bb908a2190838309c349a3a161657746b8d55873"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:36:07.857350Z","signature_b64":"RhPnCudkSiAOksufzViWsI2ERN6VxRZ0YB65X7Prs25EW6BA9WvRxfKfFDJEkhhP9ixlQER6030tm+P2xaIsAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"905da8735529edee0614b254bdf54529748ccd0d7c9a9c94f431a6a424547fc3","last_reissued_at":"2026-05-18T01:36:07.856453Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:36:07.856453Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"On the Impact of Cepheid Outliers on the Distance Ladder","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"E. Rozo, E. S. Rykoff, H. Desmond, M. R. Becker, P. Marshall","submitted_at":"2015-07-27T18:49:28Z","abstract_excerpt":"Recent work by Efstathiou (2014) highlighted the importance of outliers in the period-luminosity (PL) relation of Cepheid data on the distance ladder. We present a statistical framework designed to address this difficulty, and apply it to the Cepheid data from the Milky Way (MW), the Large Magellanic Cloud (LMC), and the Riess et al. (2011) (hereafter R11) dataset. We consider two possible models of the outlier population in the R11 Cepheid dataset. One of these models exhibits tension between the PL relation of the R11 cepheids and the MW+LMC cepheids, while the other does not. We extend our "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1507.07523","kind":"arxiv","version":2},"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":"1507.07523","created_at":"2026-05-18T01:36:07.856566+00:00"},{"alias_kind":"arxiv_version","alias_value":"1507.07523v2","created_at":"2026-05-18T01:36:07.856566+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1507.07523","created_at":"2026-05-18T01:36:07.856566+00:00"},{"alias_kind":"pith_short_12","alias_value":"SBO2Q42VFHW6","created_at":"2026-05-18T12:29:39.896362+00:00"},{"alias_kind":"pith_short_16","alias_value":"SBO2Q42VFHW64BQU","created_at":"2026-05-18T12:29:39.896362+00:00"},{"alias_kind":"pith_short_8","alias_value":"SBO2Q42V","created_at":"2026-05-18T12:29:39.896362+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/SBO2Q42VFHW64BQUWJKL35KFFF","json":"https://pith.science/pith/SBO2Q42VFHW64BQUWJKL35KFFF.json","graph_json":"https://pith.science/api/pith-number/SBO2Q42VFHW64BQUWJKL35KFFF/graph.json","events_json":"https://pith.science/api/pith-number/SBO2Q42VFHW64BQUWJKL35KFFF/events.json","paper":"https://pith.science/paper/SBO2Q42V"},"agent_actions":{"view_html":"https://pith.science/pith/SBO2Q42VFHW64BQUWJKL35KFFF","download_json":"https://pith.science/pith/SBO2Q42VFHW64BQUWJKL35KFFF.json","view_paper":"https://pith.science/paper/SBO2Q42V","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1507.07523&json=true","fetch_graph":"https://pith.science/api/pith-number/SBO2Q42VFHW64BQUWJKL35KFFF/graph.json","fetch_events":"https://pith.science/api/pith-number/SBO2Q42VFHW64BQUWJKL35KFFF/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/SBO2Q42VFHW64BQUWJKL35KFFF/action/timestamp_anchor","attest_storage":"https://pith.science/pith/SBO2Q42VFHW64BQUWJKL35KFFF/action/storage_attestation","attest_author":"https://pith.science/pith/SBO2Q42VFHW64BQUWJKL35KFFF/action/author_attestation","sign_citation":"https://pith.science/pith/SBO2Q42VFHW64BQUWJKL35KFFF/action/citation_signature","submit_replication":"https://pith.science/pith/SBO2Q42VFHW64BQUWJKL35KFFF/action/replication_record"}},"created_at":"2026-05-18T01:36:07.856566+00:00","updated_at":"2026-05-18T01:36:07.856566+00:00"}