{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2009:LUZV6G5RQN7XVVPKA7EVFG573Y","short_pith_number":"pith:LUZV6G5R","schema_version":"1.0","canonical_sha256":"5d335f1bb1837f7ad5ea07c9529bbfde175c517257c04e67208c963be43d568f","source":{"kind":"arxiv","id":"0908.4091","version":3},"attestation_state":"computed","paper":{"title":"Star Cluster Candidates in M81","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"B. McLeod, J. B. Nantais, J. P. Brodie, J. P. Huchra, J. Strader","submitted_at":"2009-08-27T20:16:09Z","abstract_excerpt":"We present a catalog of extended objects in the vicinity of M81 based a set of 24 Hubble Space Telescope Advanced Camera for Surveys (ACS) Wide Field Camera (WFC) F814W (I-band) images. We have found 233 good globular cluster candidates; 92 candidate HII regions, OB associations, or diffuse open clusters; 489 probable background galaxies; and 1719 unclassified objects. We have color data from ground-based g- and r-band MMT Megacam images for 79 galaxies, 125 globular cluster candidates, 7 HII regions, and 184 unclassified objects. The color-color diagram of globular cluster candidates shows th"},"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":"0908.4091","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-08-27T20:16:09Z","cross_cats_sorted":[],"title_canon_sha256":"03b21d8d58a6bcba8f0bf749d249a9d39eb5cd855c82a375ed63dbb227e78142","abstract_canon_sha256":"7eeff82ae213ee8ecfddc49cd0fafa2af929a5aeb0f5d36cff10efadb7db39f6"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:12:21.883121Z","signature_b64":"jwkBmFxTB5XAKpUoFJJyEoBZniSdQjI6d9pqCKdIkl94PewjUYh9wpzRJzLDSI2GzeONeZMF9gaaS8E722SwBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5d335f1bb1837f7ad5ea07c9529bbfde175c517257c04e67208c963be43d568f","last_reissued_at":"2026-05-18T02:12:21.882303Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:12:21.882303Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Star Cluster Candidates in M81","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"B. McLeod, J. B. Nantais, J. P. Brodie, J. P. Huchra, J. Strader","submitted_at":"2009-08-27T20:16:09Z","abstract_excerpt":"We present a catalog of extended objects in the vicinity of M81 based a set of 24 Hubble Space Telescope Advanced Camera for Surveys (ACS) Wide Field Camera (WFC) F814W (I-band) images. We have found 233 good globular cluster candidates; 92 candidate HII regions, OB associations, or diffuse open clusters; 489 probable background galaxies; and 1719 unclassified objects. We have color data from ground-based g- and r-band MMT Megacam images for 79 galaxies, 125 globular cluster candidates, 7 HII regions, and 184 unclassified objects. The color-color diagram of globular cluster candidates shows th"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0908.4091","kind":"arxiv","version":3},"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":"0908.4091","created_at":"2026-05-18T02:12:21.882456+00:00"},{"alias_kind":"arxiv_version","alias_value":"0908.4091v3","created_at":"2026-05-18T02:12:21.882456+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0908.4091","created_at":"2026-05-18T02:12:21.882456+00:00"},{"alias_kind":"pith_short_12","alias_value":"LUZV6G5RQN7X","created_at":"2026-05-18T12:26:00.592388+00:00"},{"alias_kind":"pith_short_16","alias_value":"LUZV6G5RQN7XVVPK","created_at":"2026-05-18T12:26:00.592388+00:00"},{"alias_kind":"pith_short_8","alias_value":"LUZV6G5R","created_at":"2026-05-18T12:26:00.592388+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/LUZV6G5RQN7XVVPKA7EVFG573Y","json":"https://pith.science/pith/LUZV6G5RQN7XVVPKA7EVFG573Y.json","graph_json":"https://pith.science/api/pith-number/LUZV6G5RQN7XVVPKA7EVFG573Y/graph.json","events_json":"https://pith.science/api/pith-number/LUZV6G5RQN7XVVPKA7EVFG573Y/events.json","paper":"https://pith.science/paper/LUZV6G5R"},"agent_actions":{"view_html":"https://pith.science/pith/LUZV6G5RQN7XVVPKA7EVFG573Y","download_json":"https://pith.science/pith/LUZV6G5RQN7XVVPKA7EVFG573Y.json","view_paper":"https://pith.science/paper/LUZV6G5R","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=0908.4091&json=true","fetch_graph":"https://pith.science/api/pith-number/LUZV6G5RQN7XVVPKA7EVFG573Y/graph.json","fetch_events":"https://pith.science/api/pith-number/LUZV6G5RQN7XVVPKA7EVFG573Y/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/LUZV6G5RQN7XVVPKA7EVFG573Y/action/timestamp_anchor","attest_storage":"https://pith.science/pith/LUZV6G5RQN7XVVPKA7EVFG573Y/action/storage_attestation","attest_author":"https://pith.science/pith/LUZV6G5RQN7XVVPKA7EVFG573Y/action/author_attestation","sign_citation":"https://pith.science/pith/LUZV6G5RQN7XVVPKA7EVFG573Y/action/citation_signature","submit_replication":"https://pith.science/pith/LUZV6G5RQN7XVVPKA7EVFG573Y/action/replication_record"}},"created_at":"2026-05-18T02:12:21.882456+00:00","updated_at":"2026-05-18T02:12:21.882456+00:00"}