{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2017:LKKTYK26OEHD7SI4FPEJ7NX42P","short_pith_number":"pith:LKKTYK26","schema_version":"1.0","canonical_sha256":"5a953c2b5e710e3fc91c2bc89fb6fcd3e49cc574f869f234fa88e779ad15b95a","source":{"kind":"arxiv","id":"1712.04714","version":2},"attestation_state":"computed","paper":{"title":"Gaia DR1 evidence of disrupting Perseus Arm","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Daisuke Kawata, Jason A.S. Hunt, Junichi Baba, Noriyuki Matsunaga, Robert J. J. Grand","submitted_at":"2017-12-13T11:33:42Z","abstract_excerpt":"We have discovered a clear sign of the disruption phase of the Perseus arm in the Milky Way using Cepheid variables, taking advantage of the accurately measured distances of Cepheids and the proper motions from Gaia Data Release 1. Both the Galactocentric radial and rotation velocities of 77 Cepheids within 1.5 kpc of the Perseus arm are correlated with their distances from the locus of the Perseus arm, as the trailing side is rotating faster and moving inward compared to the leading side. We also found a negative vertex deviation for the Cepheids on the trailing side, $-27.6\\pm2.4$ deg, in co"},"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":"1712.04714","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-12-13T11:33:42Z","cross_cats_sorted":[],"title_canon_sha256":"c07c6c3ad5f3bf5ab4d9275726b03a24ea5e5d90d3c04c5b99bccc8235c85ce0","abstract_canon_sha256":"cb03462198c3eb51f97b7b275b3e7c71de5b09ea8a8bd0d659eab7a4365f9fbd"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:23:28.613148Z","signature_b64":"oF97YrLpT20Nx1SX3kDiCEirwGCGZ25USIzLvz84+HHs+enHdaIlCDE6GUDOPF8kvYbaZUrQSIaWWk3VsOsICA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5a953c2b5e710e3fc91c2bc89fb6fcd3e49cc574f869f234fa88e779ad15b95a","last_reissued_at":"2026-05-18T00:23:28.612521Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:23:28.612521Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Gaia DR1 evidence of disrupting Perseus Arm","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Daisuke Kawata, Jason A.S. Hunt, Junichi Baba, Noriyuki Matsunaga, Robert J. J. Grand","submitted_at":"2017-12-13T11:33:42Z","abstract_excerpt":"We have discovered a clear sign of the disruption phase of the Perseus arm in the Milky Way using Cepheid variables, taking advantage of the accurately measured distances of Cepheids and the proper motions from Gaia Data Release 1. Both the Galactocentric radial and rotation velocities of 77 Cepheids within 1.5 kpc of the Perseus arm are correlated with their distances from the locus of the Perseus arm, as the trailing side is rotating faster and moving inward compared to the leading side. We also found a negative vertex deviation for the Cepheids on the trailing side, $-27.6\\pm2.4$ deg, in co"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1712.04714","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":"1712.04714","created_at":"2026-05-18T00:23:28.612620+00:00"},{"alias_kind":"arxiv_version","alias_value":"1712.04714v2","created_at":"2026-05-18T00:23:28.612620+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1712.04714","created_at":"2026-05-18T00:23:28.612620+00:00"},{"alias_kind":"pith_short_12","alias_value":"LKKTYK26OEHD","created_at":"2026-05-18T12:31:28.150371+00:00"},{"alias_kind":"pith_short_16","alias_value":"LKKTYK26OEHD7SI4","created_at":"2026-05-18T12:31:28.150371+00:00"},{"alias_kind":"pith_short_8","alias_value":"LKKTYK26","created_at":"2026-05-18T12:31:28.150371+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/LKKTYK26OEHD7SI4FPEJ7NX42P","json":"https://pith.science/pith/LKKTYK26OEHD7SI4FPEJ7NX42P.json","graph_json":"https://pith.science/api/pith-number/LKKTYK26OEHD7SI4FPEJ7NX42P/graph.json","events_json":"https://pith.science/api/pith-number/LKKTYK26OEHD7SI4FPEJ7NX42P/events.json","paper":"https://pith.science/paper/LKKTYK26"},"agent_actions":{"view_html":"https://pith.science/pith/LKKTYK26OEHD7SI4FPEJ7NX42P","download_json":"https://pith.science/pith/LKKTYK26OEHD7SI4FPEJ7NX42P.json","view_paper":"https://pith.science/paper/LKKTYK26","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1712.04714&json=true","fetch_graph":"https://pith.science/api/pith-number/LKKTYK26OEHD7SI4FPEJ7NX42P/graph.json","fetch_events":"https://pith.science/api/pith-number/LKKTYK26OEHD7SI4FPEJ7NX42P/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/LKKTYK26OEHD7SI4FPEJ7NX42P/action/timestamp_anchor","attest_storage":"https://pith.science/pith/LKKTYK26OEHD7SI4FPEJ7NX42P/action/storage_attestation","attest_author":"https://pith.science/pith/LKKTYK26OEHD7SI4FPEJ7NX42P/action/author_attestation","sign_citation":"https://pith.science/pith/LKKTYK26OEHD7SI4FPEJ7NX42P/action/citation_signature","submit_replication":"https://pith.science/pith/LKKTYK26OEHD7SI4FPEJ7NX42P/action/replication_record"}},"created_at":"2026-05-18T00:23:28.612620+00:00","updated_at":"2026-05-18T00:23:28.612620+00:00"}