{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:NXXAGRTUCGGPRNHZ367UENTC2F","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":"50df5cf855abe0f2291ec044784ec67994035051998e5f5c642e22ead443bcf3","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2017-04-28T10:05:10Z","title_canon_sha256":"306b2161cea023ee0a70ee6801f1ad76c8f2912ce54c33059f87bfa003572f02"},"schema_version":"1.0","source":{"id":"1704.08865","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1704.08865","created_at":"2026-05-18T00:35:33Z"},{"alias_kind":"arxiv_version","alias_value":"1704.08865v1","created_at":"2026-05-18T00:35:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1704.08865","created_at":"2026-05-18T00:35:33Z"},{"alias_kind":"pith_short_12","alias_value":"NXXAGRTUCGGP","created_at":"2026-05-18T12:31:34Z"},{"alias_kind":"pith_short_16","alias_value":"NXXAGRTUCGGPRNHZ","created_at":"2026-05-18T12:31:34Z"},{"alias_kind":"pith_short_8","alias_value":"NXXAGRTU","created_at":"2026-05-18T12:31:34Z"}],"graph_snapshots":[{"event_id":"sha256:6c4a0d20387262e17e11c8be0f2067ae62e0796387e76c2f1aa18e5f8c70d6bc","target":"graph","created_at":"2026-05-18T00:35:33Z","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":"Gaia Data Release 1 contains parallaxes for more than 700 Galactic Cepheids and RR Lyrae stars, computed as part of the Tycho-Gaia Astrometric Solution (TGAS). We have used TGAS parallaxes, along with literature ($V, I, J, {K_\\mathrm{s}}, W_1$) photometry and spectroscopy, to calibrate the zero point of the Period-Luminosity and Period-Wesenheit relations of classical and type II Cepheids, and the near-infrared Period-Luminosity, Period-Luminosity-Metallicity and optical Luminosity-Metallicity relations of RR Lyrae stars. In this contribution we briefly summarise results obtained by fitting th","authors_text":"Alessia Garofalo, Gisella Clementini, Ilaria Musella, Laszlo Szabados, Laurent Eyer, Lorenzo Rimoldini, Luis Sarro, Marcella Marconi, Max Palmer, Richard I. Anderson, Roberto Molinaro, Tatiana Muraveva, Vincenzo Ripepi, Xavier Luri","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2017-04-28T10:05:10Z","title":"Gaia's Cepheids and RR Lyrae Stars and Luminosity Calibrations Based on Tycho-Gaia Astrometric Solution"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1704.08865","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:a892bd35c926d253705b8cc7b9fb3a4995532b18d70940389c27e5a08c3c2c4b","target":"record","created_at":"2026-05-18T00:35:33Z","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":"50df5cf855abe0f2291ec044784ec67994035051998e5f5c642e22ead443bcf3","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2017-04-28T10:05:10Z","title_canon_sha256":"306b2161cea023ee0a70ee6801f1ad76c8f2912ce54c33059f87bfa003572f02"},"schema_version":"1.0","source":{"id":"1704.08865","kind":"arxiv","version":1}},"canonical_sha256":"6dee034674118cf8b4f9dfbf423662d15b960b941d80601db8a3a87d7c21753a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6dee034674118cf8b4f9dfbf423662d15b960b941d80601db8a3a87d7c21753a","first_computed_at":"2026-05-18T00:35:33.780455Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:35:33.780455Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"BjUr/ygSdB1/lkZA1AJ5wgilMIE6+70/kv5vIxT08GnQOWyEqVe6vehRp2CUUdnR0chlTZA55YtluNwVBrpwDg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:35:33.781153Z","signed_message":"canonical_sha256_bytes"},"source_id":"1704.08865","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a892bd35c926d253705b8cc7b9fb3a4995532b18d70940389c27e5a08c3c2c4b","sha256:6c4a0d20387262e17e11c8be0f2067ae62e0796387e76c2f1aa18e5f8c70d6bc"],"state_sha256":"6b3ba39bafd562410869e4351ac1d48eb7ed06bf2b78595c2a39ab970ca621e8"}