{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:XEB5K6T74YSBCUNBC4AYY4D6BD","short_pith_number":"pith:XEB5K6T7","canonical_record":{"source":{"id":"2301.00229","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2022-12-31T15:47:43Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"6ab264706cad7cfb5c9c35e2f079033ffc2408e66c4b8f6a91d870e98fe2e75d","abstract_canon_sha256":"34fae4f31906de5cb1c6c491fbd8c6aa92e723c8fd1011dbc1a05d408db05876"},"schema_version":"1.0"},"canonical_sha256":"b903d57a7fe6241151a117018c707e08c7c7c5c0beccf5d7fb5823a69ce7ef1b","source":{"kind":"arxiv","id":"2301.00229","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2301.00229","created_at":"2026-07-05T05:53:11Z"},{"alias_kind":"arxiv_version","alias_value":"2301.00229v2","created_at":"2026-07-05T05:53:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2301.00229","created_at":"2026-07-05T05:53:11Z"},{"alias_kind":"pith_short_12","alias_value":"XEB5K6T74YSB","created_at":"2026-07-05T05:53:11Z"},{"alias_kind":"pith_short_16","alias_value":"XEB5K6T74YSBCUNB","created_at":"2026-07-05T05:53:11Z"},{"alias_kind":"pith_short_8","alias_value":"XEB5K6T7","created_at":"2026-07-05T05:53:11Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:XEB5K6T74YSBCUNBC4AYY4D6BD","target":"record","payload":{"canonical_record":{"source":{"id":"2301.00229","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2022-12-31T15:47:43Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"6ab264706cad7cfb5c9c35e2f079033ffc2408e66c4b8f6a91d870e98fe2e75d","abstract_canon_sha256":"34fae4f31906de5cb1c6c491fbd8c6aa92e723c8fd1011dbc1a05d408db05876"},"schema_version":"1.0"},"canonical_sha256":"b903d57a7fe6241151a117018c707e08c7c7c5c0beccf5d7fb5823a69ce7ef1b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T05:53:11.383527Z","signature_b64":"z3ODeiz9BDMO7BnKoUCzWbGlqc/OiBgvlF1F2pVAs2V0ny+e2ZLZW9llVFgmBttkGLdEjegPgXuzgf8n494ECg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b903d57a7fe6241151a117018c707e08c7c7c5c0beccf5d7fb5823a69ce7ef1b","last_reissued_at":"2026-07-05T05:53:11.383046Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T05:53:11.383046Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2301.00229","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T05:53:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"28wMqJpXm7a9IYQOu0GuejbeYhdKsksZTx2wY5braOQfkeeafwTCLqyc6xrCZMVlyFjsKUUJodTlDFo0LvdBDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-13T08:05:41.352178Z"},"content_sha256":"56ffe6fe40b43fab239a5ebd5baf3983b7fdc6c8579eccb0abde1f6cdb41b4ec","schema_version":"1.0","event_id":"sha256:56ffe6fe40b43fab239a5ebd5baf3983b7fdc6c8579eccb0abde1f6cdb41b4ec"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:XEB5K6T74YSBCUNBC4AYY4D6BD","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Metallicity estimation of MW, SMC and LMC classical Cepheids from the shape of the $V$- and $I$-band light curves","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.SR","authors_text":"O. Zi\\'o{\\l}kowska, P. Moskalik, R. Singh Rathour, R. Smolec, V. Hocd\\'e","submitted_at":"2022-12-31T15:47:43Z","abstract_excerpt":"Estimating metallicity of classical Cepheids is of prime importance for studying metallicity effect on stellar evolution, chemical evolution of galaxies, and ultimately its impact on period-luminosity relation used in the extragalactic distance scale. We aim at establishing new empirical relations for estimating the iron content of classical Cepheids for short and long-periods based on Fourier parameters from the $V$-band light curves. We calibrate new interrelations of Fourier parameters to convert $V$-band empirical relations into the $I$-band. Then we apply these relation in $V$ and $I$-ban"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2301.00229","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2301.00229/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T05:53:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"mdtiqpoZBaNUEnzU/i40E/8+JCWhnHZNOOmbdb15kBrxSOUG+h02btBAT/jKKhQ8JENsIfwIAggq3QsWnMoeAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-13T08:05:41.352840Z"},"content_sha256":"231e24ef89bacb298ccf795e6049e562630b9574a3464470a7bee10c2187ff8e","schema_version":"1.0","event_id":"sha256:231e24ef89bacb298ccf795e6049e562630b9574a3464470a7bee10c2187ff8e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/XEB5K6T74YSBCUNBC4AYY4D6BD/bundle.json","state_url":"https://pith.science/pith/XEB5K6T74YSBCUNBC4AYY4D6BD/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/XEB5K6T74YSBCUNBC4AYY4D6BD/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-08-13T08:05:41Z","links":{"resolver":"https://pith.science/pith/XEB5K6T74YSBCUNBC4AYY4D6BD","bundle":"https://pith.science/pith/XEB5K6T74YSBCUNBC4AYY4D6BD/bundle.json","state":"https://pith.science/pith/XEB5K6T74YSBCUNBC4AYY4D6BD/state.json","well_known_bundle":"https://pith.science/.well-known/pith/XEB5K6T74YSBCUNBC4AYY4D6BD/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:XEB5K6T74YSBCUNBC4AYY4D6BD","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"34fae4f31906de5cb1c6c491fbd8c6aa92e723c8fd1011dbc1a05d408db05876","cross_cats_sorted":["astro-ph.GA"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2022-12-31T15:47:43Z","title_canon_sha256":"6ab264706cad7cfb5c9c35e2f079033ffc2408e66c4b8f6a91d870e98fe2e75d"},"schema_version":"1.0","source":{"id":"2301.00229","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2301.00229","created_at":"2026-07-05T05:53:11Z"},{"alias_kind":"arxiv_version","alias_value":"2301.00229v2","created_at":"2026-07-05T05:53:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2301.00229","created_at":"2026-07-05T05:53:11Z"},{"alias_kind":"pith_short_12","alias_value":"XEB5K6T74YSB","created_at":"2026-07-05T05:53:11Z"},{"alias_kind":"pith_short_16","alias_value":"XEB5K6T74YSBCUNB","created_at":"2026-07-05T05:53:11Z"},{"alias_kind":"pith_short_8","alias_value":"XEB5K6T7","created_at":"2026-07-05T05:53:11Z"}],"graph_snapshots":[{"event_id":"sha256:231e24ef89bacb298ccf795e6049e562630b9574a3464470a7bee10c2187ff8e","target":"graph","created_at":"2026-07-05T05:53:11Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2301.00229/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Estimating metallicity of classical Cepheids is of prime importance for studying metallicity effect on stellar evolution, chemical evolution of galaxies, and ultimately its impact on period-luminosity relation used in the extragalactic distance scale. We aim at establishing new empirical relations for estimating the iron content of classical Cepheids for short and long-periods based on Fourier parameters from the $V$-band light curves. We calibrate new interrelations of Fourier parameters to convert $V$-band empirical relations into the $I$-band. Then we apply these relation in $V$ and $I$-ban","authors_text":"O. Zi\\'o{\\l}kowska, P. Moskalik, R. Singh Rathour, R. Smolec, V. Hocd\\'e","cross_cats":["astro-ph.GA"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2022-12-31T15:47:43Z","title":"Metallicity estimation of MW, SMC and LMC classical Cepheids from the shape of the $V$- and $I$-band light curves"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2301.00229","kind":"arxiv","version":2},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:56ffe6fe40b43fab239a5ebd5baf3983b7fdc6c8579eccb0abde1f6cdb41b4ec","target":"record","created_at":"2026-07-05T05:53:11Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"34fae4f31906de5cb1c6c491fbd8c6aa92e723c8fd1011dbc1a05d408db05876","cross_cats_sorted":["astro-ph.GA"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2022-12-31T15:47:43Z","title_canon_sha256":"6ab264706cad7cfb5c9c35e2f079033ffc2408e66c4b8f6a91d870e98fe2e75d"},"schema_version":"1.0","source":{"id":"2301.00229","kind":"arxiv","version":2}},"canonical_sha256":"b903d57a7fe6241151a117018c707e08c7c7c5c0beccf5d7fb5823a69ce7ef1b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b903d57a7fe6241151a117018c707e08c7c7c5c0beccf5d7fb5823a69ce7ef1b","first_computed_at":"2026-07-05T05:53:11.383046Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T05:53:11.383046Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"z3ODeiz9BDMO7BnKoUCzWbGlqc/OiBgvlF1F2pVAs2V0ny+e2ZLZW9llVFgmBttkGLdEjegPgXuzgf8n494ECg==","signature_status":"signed_v1","signed_at":"2026-07-05T05:53:11.383527Z","signed_message":"canonical_sha256_bytes"},"source_id":"2301.00229","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:56ffe6fe40b43fab239a5ebd5baf3983b7fdc6c8579eccb0abde1f6cdb41b4ec","sha256:231e24ef89bacb298ccf795e6049e562630b9574a3464470a7bee10c2187ff8e"],"state_sha256":"e4cc8045988273f55095d0c95fc1e3ca517b296e7de0ce52b3710d7361c7bfaa"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"btmC0RyHECohe75C6O54iSCaXzhZxiwhNw2eDd2wk/ogf623FOyrLpABH7kXdL3EGtHKr34xdUacPeOXMoCvBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-13T08:05:41.378942Z","bundle_sha256":"cc6ea6ac302910da916b918d9a651a90f4b373742d1c9f5d07f0f09abc6102d1"}}