{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2010:ZAAJG2ZKH6ZQBK6IR6XVQRRQOL","short_pith_number":"pith:ZAAJG2ZK","schema_version":"1.0","canonical_sha256":"c800936b2a3fb300abc88faf58463072d7d816d3fc2e1f8292cfb8dae56cbab2","source":{"kind":"arxiv","id":"1007.2686","version":1},"attestation_state":"computed","paper":{"title":"No Open Cluster in the Ruprecht 93 Region","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"H. Sung, M.S. Bessell, S. Cheon","submitted_at":"2010-07-16T00:50:21Z","abstract_excerpt":"UBVI CCD photometry has been obtained for the Ruprecht 93 (Ru 93) region. We were unable to confirm the existence of an intermediate-age open cluster in Ru 93 from the spatial distribution of blue stars. On the other hand, we found two young star groups in the observed field: the nearer one (Ru 93 group) comprises the field young stars in the Sgr-Car arm at d ~ 2.1 kpc, while the farther one (WR 37 group) is the young stars around WR 37 at d ~ 4.8 kpc. We have derived an abnormal extinction law (Rv = 3.5) in the Ruprecht 93 region."},"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":"1007.2686","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2010-07-16T00:50:21Z","cross_cats_sorted":[],"title_canon_sha256":"04cf75e360110f562183c065ca6ca6ba94d87aaa24ba5db63655e3d2eeeff53e","abstract_canon_sha256":"c6f3565913bf55d2116a601a92de28d19fc26683028ab336ce5b475f1fb6778b"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:06:21.393386Z","signature_b64":"LA9iiRkRw1apnAJqt60DUbBJ43w9A2R7NWfoXsLClpIoSUx+quS0qhuVpVS2IQZubHdiGDWI9FGKIooOMpUwCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c800936b2a3fb300abc88faf58463072d7d816d3fc2e1f8292cfb8dae56cbab2","last_reissued_at":"2026-05-18T02:06:21.392695Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:06:21.392695Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"No Open Cluster in the Ruprecht 93 Region","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"H. Sung, M.S. Bessell, S. Cheon","submitted_at":"2010-07-16T00:50:21Z","abstract_excerpt":"UBVI CCD photometry has been obtained for the Ruprecht 93 (Ru 93) region. We were unable to confirm the existence of an intermediate-age open cluster in Ru 93 from the spatial distribution of blue stars. On the other hand, we found two young star groups in the observed field: the nearer one (Ru 93 group) comprises the field young stars in the Sgr-Car arm at d ~ 2.1 kpc, while the farther one (WR 37 group) is the young stars around WR 37 at d ~ 4.8 kpc. We have derived an abnormal extinction law (Rv = 3.5) in the Ruprecht 93 region."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1007.2686","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":""},"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":"1007.2686","created_at":"2026-05-18T02:06:21.392789+00:00"},{"alias_kind":"arxiv_version","alias_value":"1007.2686v1","created_at":"2026-05-18T02:06:21.392789+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1007.2686","created_at":"2026-05-18T02:06:21.392789+00:00"},{"alias_kind":"pith_short_12","alias_value":"ZAAJG2ZKH6ZQ","created_at":"2026-05-18T12:26:17.028572+00:00"},{"alias_kind":"pith_short_16","alias_value":"ZAAJG2ZKH6ZQBK6I","created_at":"2026-05-18T12:26:17.028572+00:00"},{"alias_kind":"pith_short_8","alias_value":"ZAAJG2ZK","created_at":"2026-05-18T12:26:17.028572+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/ZAAJG2ZKH6ZQBK6IR6XVQRRQOL","json":"https://pith.science/pith/ZAAJG2ZKH6ZQBK6IR6XVQRRQOL.json","graph_json":"https://pith.science/api/pith-number/ZAAJG2ZKH6ZQBK6IR6XVQRRQOL/graph.json","events_json":"https://pith.science/api/pith-number/ZAAJG2ZKH6ZQBK6IR6XVQRRQOL/events.json","paper":"https://pith.science/paper/ZAAJG2ZK"},"agent_actions":{"view_html":"https://pith.science/pith/ZAAJG2ZKH6ZQBK6IR6XVQRRQOL","download_json":"https://pith.science/pith/ZAAJG2ZKH6ZQBK6IR6XVQRRQOL.json","view_paper":"https://pith.science/paper/ZAAJG2ZK","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1007.2686&json=true","fetch_graph":"https://pith.science/api/pith-number/ZAAJG2ZKH6ZQBK6IR6XVQRRQOL/graph.json","fetch_events":"https://pith.science/api/pith-number/ZAAJG2ZKH6ZQBK6IR6XVQRRQOL/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/ZAAJG2ZKH6ZQBK6IR6XVQRRQOL/action/timestamp_anchor","attest_storage":"https://pith.science/pith/ZAAJG2ZKH6ZQBK6IR6XVQRRQOL/action/storage_attestation","attest_author":"https://pith.science/pith/ZAAJG2ZKH6ZQBK6IR6XVQRRQOL/action/author_attestation","sign_citation":"https://pith.science/pith/ZAAJG2ZKH6ZQBK6IR6XVQRRQOL/action/citation_signature","submit_replication":"https://pith.science/pith/ZAAJG2ZKH6ZQBK6IR6XVQRRQOL/action/replication_record"}},"created_at":"2026-05-18T02:06:21.392789+00:00","updated_at":"2026-05-18T02:06:21.392789+00:00"}