{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2024:PAWIPFH6GITZNJE3EIVIEMO4CQ","short_pith_number":"pith:PAWIPFH6","schema_version":"1.0","canonical_sha256":"782c8794fe322796a49b222a8231dc14383a60c5ac5e65949f095a8d44675e51","source":{"kind":"arxiv","id":"2409.04259","version":1},"attestation_state":"computed","paper":{"title":"An \"alien\" called Oosterhoff dichotomy?","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.GA","authors_text":"E. Luongo, G. Clementini, G. Longo, M. Marconi, M. Rejkuba, V. Ripepi, Z. Prudil","submitted_at":"2024-09-06T13:12:52Z","abstract_excerpt":"In this letter we investigate the origin of the Oosterhoff dichotomy, considering recent discoveries related to several ancient merging events of external galaxies with the Milky Way (MW). In particular, we aim to clarify if the subdivision in Oosterhoff type of Galactic Globular Clusters (GGCs) and field RR Lyrae (RRLs) could be traced back to one or more ancient galaxies that merged with the MW in its past. To this purpose, we first explored the association of GGCs with the past merging events according to different literature studies. Subsequently we compiled positions, proper motions and r"},"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":"2409.04259","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2024-09-06T13:12:52Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"980ef1f9356c5fc78d2af7fba7ca09bda210419f11944fb6fdc485837c073e9c","abstract_canon_sha256":"612244956df4348c6a01abf1f98f9cc353330d2b5f452dc6b407bfa9b900b88c"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T09:04:03.814750Z","signature_b64":"wUQi00+ffj4CS/FCnm7V59tJ2aDoVwz4RoL1wQXAS/O6C+qYSC3QHzfOfS+3Ri1EcOkLZXfIN/zolh7M6lz4Bg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"782c8794fe322796a49b222a8231dc14383a60c5ac5e65949f095a8d44675e51","last_reissued_at":"2026-07-05T09:04:03.814285Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T09:04:03.814285Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"An \"alien\" called Oosterhoff dichotomy?","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.GA","authors_text":"E. Luongo, G. Clementini, G. Longo, M. Marconi, M. Rejkuba, V. Ripepi, Z. Prudil","submitted_at":"2024-09-06T13:12:52Z","abstract_excerpt":"In this letter we investigate the origin of the Oosterhoff dichotomy, considering recent discoveries related to several ancient merging events of external galaxies with the Milky Way (MW). In particular, we aim to clarify if the subdivision in Oosterhoff type of Galactic Globular Clusters (GGCs) and field RR Lyrae (RRLs) could be traced back to one or more ancient galaxies that merged with the MW in its past. To this purpose, we first explored the association of GGCs with the past merging events according to different literature studies. Subsequently we compiled positions, proper motions and r"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2409.04259","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2409.04259/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"},"aliases":[{"alias_kind":"arxiv","alias_value":"2409.04259","created_at":"2026-07-05T09:04:03.814355+00:00"},{"alias_kind":"arxiv_version","alias_value":"2409.04259v1","created_at":"2026-07-05T09:04:03.814355+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2409.04259","created_at":"2026-07-05T09:04:03.814355+00:00"},{"alias_kind":"pith_short_12","alias_value":"PAWIPFH6GITZ","created_at":"2026-07-05T09:04:03.814355+00:00"},{"alias_kind":"pith_short_16","alias_value":"PAWIPFH6GITZNJE3","created_at":"2026-07-05T09:04:03.814355+00:00"},{"alias_kind":"pith_short_8","alias_value":"PAWIPFH6","created_at":"2026-07-05T09:04:03.814355+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":1,"sample":[{"citing_arxiv_id":"2505.10614","citing_title":"The DESI Y1 RR Lyrae catalog II: The metallicity dependency of pulsational properties, the shape of the RR Lyrae instability strip, and metal rich RR Lyrae","ref_index":81,"is_internal_anchor":true}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/PAWIPFH6GITZNJE3EIVIEMO4CQ","json":"https://pith.science/pith/PAWIPFH6GITZNJE3EIVIEMO4CQ.json","graph_json":"https://pith.science/api/pith-number/PAWIPFH6GITZNJE3EIVIEMO4CQ/graph.json","events_json":"https://pith.science/api/pith-number/PAWIPFH6GITZNJE3EIVIEMO4CQ/events.json","paper":"https://pith.science/paper/PAWIPFH6"},"agent_actions":{"view_html":"https://pith.science/pith/PAWIPFH6GITZNJE3EIVIEMO4CQ","download_json":"https://pith.science/pith/PAWIPFH6GITZNJE3EIVIEMO4CQ.json","view_paper":"https://pith.science/paper/PAWIPFH6","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2409.04259&json=true","fetch_graph":"https://pith.science/api/pith-number/PAWIPFH6GITZNJE3EIVIEMO4CQ/graph.json","fetch_events":"https://pith.science/api/pith-number/PAWIPFH6GITZNJE3EIVIEMO4CQ/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/PAWIPFH6GITZNJE3EIVIEMO4CQ/action/timestamp_anchor","attest_storage":"https://pith.science/pith/PAWIPFH6GITZNJE3EIVIEMO4CQ/action/storage_attestation","attest_author":"https://pith.science/pith/PAWIPFH6GITZNJE3EIVIEMO4CQ/action/author_attestation","sign_citation":"https://pith.science/pith/PAWIPFH6GITZNJE3EIVIEMO4CQ/action/citation_signature","submit_replication":"https://pith.science/pith/PAWIPFH6GITZNJE3EIVIEMO4CQ/action/replication_record"}},"created_at":"2026-07-05T09:04:03.814355+00:00","updated_at":"2026-07-05T09:04:03.814355+00:00"}