{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2011:C3SSX6GEGAYOYQZJFGOMIWOREV","short_pith_number":"pith:C3SSX6GE","schema_version":"1.0","canonical_sha256":"16e52bf8c43030ec4329299cc459d1257407fdf9118fdd566a41477013f97cfa","source":{"kind":"arxiv","id":"1109.2016","version":1},"attestation_state":"computed","paper":{"title":"Calibrating the Cepheid Period-Luminosity relation from the infrared surface brightness technique II. The effect of metallicity, and the distance to the LMC","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.CO","authors_text":"(2) Universidad de Concepcion, (3) IRAP Toulouse, (4) University of Texas at Austin, 5), (5) Warsaw University Observatory, 6), (6) Laboratoire Fizeau, (7) Observatoire de Geneve), D. Queloz (7) ((1) Leibniz Institute for Astrophysics Potsdam (AIP), G. Pietrzynski (2, I. Soszynski (5), J. Storm (1), Nice, N. Nardetto (2, P. Fouque (3), T.G. Barnes (4), W. Gieren (2)","submitted_at":"2011-09-09T14:05:24Z","abstract_excerpt":"The extragalactic distance scale builds directly on the Cepheid Period-Luminosity (PL) relation as delineated by the sample of Cepheids in the Large Magellanic Cloud (LMC). However, the LMC is a dwarf irregular galaxy, quite different from the massive spiral galaxies used for calibrating the extragalactic distance scale. Recent investigations suggest that not only the zero-point but also the slope of the Milky Way PL relation differ significantly from that of the LMC, casting doubts on the universality of the Cepheid PL relation. We want to make a differential comparison of the PL relations in"},"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":"1109.2016","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-09-09T14:05:24Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"5a7bd1523e4f807c8c76e1811d43b6c0a9a036ce47fd1c19e6439fa716eeecdc","abstract_canon_sha256":"69c5a88a8c1dc480b8d46e58af7105466e692e1941206e1b651c671f2f87b00a"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:00:37.210329Z","signature_b64":"lFQb8B5A1di2vQh0V//6j0nx5zYk9PEYdWeZwcgNDXU9QhOccHgMY4SGTfcW70ODVEvm7LIaBQsgPofM8E7JDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"16e52bf8c43030ec4329299cc459d1257407fdf9118fdd566a41477013f97cfa","last_reissued_at":"2026-05-18T02:00:37.209657Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:00:37.209657Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Calibrating the Cepheid Period-Luminosity relation from the infrared surface brightness technique II. The effect of metallicity, and the distance to the LMC","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.CO","authors_text":"(2) Universidad de Concepcion, (3) IRAP Toulouse, (4) University of Texas at Austin, 5), (5) Warsaw University Observatory, 6), (6) Laboratoire Fizeau, (7) Observatoire de Geneve), D. Queloz (7) ((1) Leibniz Institute for Astrophysics Potsdam (AIP), G. Pietrzynski (2, I. Soszynski (5), J. Storm (1), Nice, N. Nardetto (2, P. Fouque (3), T.G. Barnes (4), W. Gieren (2)","submitted_at":"2011-09-09T14:05:24Z","abstract_excerpt":"The extragalactic distance scale builds directly on the Cepheid Period-Luminosity (PL) relation as delineated by the sample of Cepheids in the Large Magellanic Cloud (LMC). However, the LMC is a dwarf irregular galaxy, quite different from the massive spiral galaxies used for calibrating the extragalactic distance scale. Recent investigations suggest that not only the zero-point but also the slope of the Milky Way PL relation differ significantly from that of the LMC, casting doubts on the universality of the Cepheid PL relation. We want to make a differential comparison of the PL relations in"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1109.2016","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":"1109.2016","created_at":"2026-05-18T02:00:37.209767+00:00"},{"alias_kind":"arxiv_version","alias_value":"1109.2016v1","created_at":"2026-05-18T02:00:37.209767+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1109.2016","created_at":"2026-05-18T02:00:37.209767+00:00"},{"alias_kind":"pith_short_12","alias_value":"C3SSX6GEGAYO","created_at":"2026-05-18T12:26:24.575870+00:00"},{"alias_kind":"pith_short_16","alias_value":"C3SSX6GEGAYOYQZJ","created_at":"2026-05-18T12:26:24.575870+00:00"},{"alias_kind":"pith_short_8","alias_value":"C3SSX6GE","created_at":"2026-05-18T12:26:24.575870+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/C3SSX6GEGAYOYQZJFGOMIWOREV","json":"https://pith.science/pith/C3SSX6GEGAYOYQZJFGOMIWOREV.json","graph_json":"https://pith.science/api/pith-number/C3SSX6GEGAYOYQZJFGOMIWOREV/graph.json","events_json":"https://pith.science/api/pith-number/C3SSX6GEGAYOYQZJFGOMIWOREV/events.json","paper":"https://pith.science/paper/C3SSX6GE"},"agent_actions":{"view_html":"https://pith.science/pith/C3SSX6GEGAYOYQZJFGOMIWOREV","download_json":"https://pith.science/pith/C3SSX6GEGAYOYQZJFGOMIWOREV.json","view_paper":"https://pith.science/paper/C3SSX6GE","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1109.2016&json=true","fetch_graph":"https://pith.science/api/pith-number/C3SSX6GEGAYOYQZJFGOMIWOREV/graph.json","fetch_events":"https://pith.science/api/pith-number/C3SSX6GEGAYOYQZJFGOMIWOREV/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/C3SSX6GEGAYOYQZJFGOMIWOREV/action/timestamp_anchor","attest_storage":"https://pith.science/pith/C3SSX6GEGAYOYQZJFGOMIWOREV/action/storage_attestation","attest_author":"https://pith.science/pith/C3SSX6GEGAYOYQZJFGOMIWOREV/action/author_attestation","sign_citation":"https://pith.science/pith/C3SSX6GEGAYOYQZJFGOMIWOREV/action/citation_signature","submit_replication":"https://pith.science/pith/C3SSX6GEGAYOYQZJFGOMIWOREV/action/replication_record"}},"created_at":"2026-05-18T02:00:37.209767+00:00","updated_at":"2026-05-18T02:00:37.209767+00:00"}