{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:IM2S4YSKKUQHM22M5ALHESR3BP","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":"9f3da859d5a3b65df52f8d1ff4a3b6cb449ecf2b0bbae68fef5ba5d95a3ffaf5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2014-09-17T09:26:48Z","title_canon_sha256":"f7ddd01d8ec9a543c6cddc92739665dae51889df2a2ddf5ad05861599f8bb100"},"schema_version":"1.0","source":{"id":"1409.4911","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1409.4911","created_at":"2026-05-18T01:42:01Z"},{"alias_kind":"arxiv_version","alias_value":"1409.4911v1","created_at":"2026-05-18T01:42:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1409.4911","created_at":"2026-05-18T01:42:01Z"},{"alias_kind":"pith_short_12","alias_value":"IM2S4YSKKUQH","created_at":"2026-05-18T12:28:33Z"},{"alias_kind":"pith_short_16","alias_value":"IM2S4YSKKUQHM22M","created_at":"2026-05-18T12:28:33Z"},{"alias_kind":"pith_short_8","alias_value":"IM2S4YSK","created_at":"2026-05-18T12:28:33Z"}],"graph_snapshots":[{"event_id":"sha256:f05f7934bda3b3791442765d72c2e0a8259f484ada79b3b6e9e68c344d2c6b8e","target":"graph","created_at":"2026-05-18T01:42:01Z","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"},"paper":{"abstract_excerpt":"We analyze Galactic, Large Magellanic Cloud and Small Magellanic Cloud Cepheids and RR Lyrae variables in terms of period-color (PC) and amplitude-color (AC) diagrams at the phases of maximum and minimum light. We compiled Galactic Cepheids $V$- and $I$-band data from the literature. We make use of optical bands light curve data from OGLE-III survey for Cepheids and RR Lyrae variables in the Magellanic Clouds. We apply the $F$-statistical test to check the significance of any variation in the slope of PC and AC relations for Cepheid variables. The PC relation at maximum light for Galactic Ceph","authors_text":"Anupam Bhardwaj, Chow-Choong Ngeow, Harinder P. Singh, Shashi M. Kanbur","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2014-09-17T09:26:48Z","title":"Empirical Period-Color and Amplitude-Color Relations for Classical Cepheids and RR Lyrae Variables"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1409.4911","kind":"arxiv","version":1},"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:e8f8b78b9a9107493a6220df74922c2eff8beb42c641f1d9841d2a9e39e618b9","target":"record","created_at":"2026-05-18T01:42:01Z","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":"9f3da859d5a3b65df52f8d1ff4a3b6cb449ecf2b0bbae68fef5ba5d95a3ffaf5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2014-09-17T09:26:48Z","title_canon_sha256":"f7ddd01d8ec9a543c6cddc92739665dae51889df2a2ddf5ad05861599f8bb100"},"schema_version":"1.0","source":{"id":"1409.4911","kind":"arxiv","version":1}},"canonical_sha256":"43352e624a5520766b4ce816724a3b0bcdf2623b6558e3d7b067f51c3b3815c8","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"43352e624a5520766b4ce816724a3b0bcdf2623b6558e3d7b067f51c3b3815c8","first_computed_at":"2026-05-18T01:42:01.858488Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:42:01.858488Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"QBZGdYlX7mhb2Zj7N9eSxBJneEqajgrjqDKsUd7wHtWCzPkSMFAGRmyW/IPgGytLtT0+XBcuupgpKxIRgUkhBg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:42:01.858963Z","signed_message":"canonical_sha256_bytes"},"source_id":"1409.4911","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e8f8b78b9a9107493a6220df74922c2eff8beb42c641f1d9841d2a9e39e618b9","sha256:f05f7934bda3b3791442765d72c2e0a8259f484ada79b3b6e9e68c344d2c6b8e"],"state_sha256":"66ca1b98b523068da138db4a0c5d45dba97162175708556ab774f5b30fa79113"}