{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2021:YVSHWKPFLNJUGIQKYHWPBDUGM2","short_pith_number":"pith:YVSHWKPF","schema_version":"1.0","canonical_sha256":"c5647b29e55b5343220ac1ecf08e8666a026642012706c60189ef6fdcb28d80b","source":{"kind":"arxiv","id":"2107.07230","version":1},"attestation_state":"computed","paper":{"title":"Structure of Open Clusters -- Gaia DR2 and its limitations","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.GA","authors_text":"Ernst Paunzen, Martin Piecka","submitted_at":"2021-07-15T10:10:16Z","abstract_excerpt":"Very precise observational data are needed for studying the stellar cluster parameters (distance, reddening, age, metallicity) and cluster internal kinematics. In turn, these give us an insight into the properties of our Galaxy, for example, by giving us the ability to trace Galactic spiral structure, star formation rates and metallicity gradients. We investigated the available Gaia DR2 catalogue of 1229 open clusters and studied cluster distances, sizes and membership distributions in the 3D space. An appropriate analysis of the parallaxto-distance transformation problem is presented in the c"},"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":"2107.07230","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2021-07-15T10:10:16Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"82e158b9bf38ad5ec047596bac794258536cbc9dd26e240c6e9e26ebd3340791","abstract_canon_sha256":"66f6abe34b13856d0723317cc38310ad88040b442730057cc03b82dd7f3523ec"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:58:12.121562Z","signature_b64":"gcXnHkgs3gQsstj78RVgrpV4r6jgHebktsoqA6Z+rhyC2ShAq3RDj+JB9VPOTwGUtFk0Co5Nhf4i6FsGT/u8BA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c5647b29e55b5343220ac1ecf08e8666a026642012706c60189ef6fdcb28d80b","last_reissued_at":"2026-07-05T02:58:12.121215Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:58:12.121215Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Structure of Open Clusters -- Gaia DR2 and its limitations","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.GA","authors_text":"Ernst Paunzen, Martin Piecka","submitted_at":"2021-07-15T10:10:16Z","abstract_excerpt":"Very precise observational data are needed for studying the stellar cluster parameters (distance, reddening, age, metallicity) and cluster internal kinematics. In turn, these give us an insight into the properties of our Galaxy, for example, by giving us the ability to trace Galactic spiral structure, star formation rates and metallicity gradients. We investigated the available Gaia DR2 catalogue of 1229 open clusters and studied cluster distances, sizes and membership distributions in the 3D space. An appropriate analysis of the parallaxto-distance transformation problem is presented in the c"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2107.07230","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/2107.07230/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":"2107.07230","created_at":"2026-07-05T02:58:12.121275+00:00"},{"alias_kind":"arxiv_version","alias_value":"2107.07230v1","created_at":"2026-07-05T02:58:12.121275+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2107.07230","created_at":"2026-07-05T02:58:12.121275+00:00"},{"alias_kind":"pith_short_12","alias_value":"YVSHWKPFLNJU","created_at":"2026-07-05T02:58:12.121275+00:00"},{"alias_kind":"pith_short_16","alias_value":"YVSHWKPFLNJUGIQK","created_at":"2026-07-05T02:58:12.121275+00:00"},{"alias_kind":"pith_short_8","alias_value":"YVSHWKPF","created_at":"2026-07-05T02:58:12.121275+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/YVSHWKPFLNJUGIQKYHWPBDUGM2","json":"https://pith.science/pith/YVSHWKPFLNJUGIQKYHWPBDUGM2.json","graph_json":"https://pith.science/api/pith-number/YVSHWKPFLNJUGIQKYHWPBDUGM2/graph.json","events_json":"https://pith.science/api/pith-number/YVSHWKPFLNJUGIQKYHWPBDUGM2/events.json","paper":"https://pith.science/paper/YVSHWKPF"},"agent_actions":{"view_html":"https://pith.science/pith/YVSHWKPFLNJUGIQKYHWPBDUGM2","download_json":"https://pith.science/pith/YVSHWKPFLNJUGIQKYHWPBDUGM2.json","view_paper":"https://pith.science/paper/YVSHWKPF","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2107.07230&json=true","fetch_graph":"https://pith.science/api/pith-number/YVSHWKPFLNJUGIQKYHWPBDUGM2/graph.json","fetch_events":"https://pith.science/api/pith-number/YVSHWKPFLNJUGIQKYHWPBDUGM2/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/YVSHWKPFLNJUGIQKYHWPBDUGM2/action/timestamp_anchor","attest_storage":"https://pith.science/pith/YVSHWKPFLNJUGIQKYHWPBDUGM2/action/storage_attestation","attest_author":"https://pith.science/pith/YVSHWKPFLNJUGIQKYHWPBDUGM2/action/author_attestation","sign_citation":"https://pith.science/pith/YVSHWKPFLNJUGIQKYHWPBDUGM2/action/citation_signature","submit_replication":"https://pith.science/pith/YVSHWKPFLNJUGIQKYHWPBDUGM2/action/replication_record"}},"created_at":"2026-07-05T02:58:12.121275+00:00","updated_at":"2026-07-05T02:58:12.121275+00:00"}