{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2011:OBFK3VKW3HX7PEFASOAOEDYID5","short_pith_number":"pith:OBFK3VKW","schema_version":"1.0","canonical_sha256":"704aadd556d9eff790a09380e20f081f49885e2b788ac1b51013fa34b33f6fa7","source":{"kind":"arxiv","id":"1109.6006","version":1},"attestation_state":"computed","paper":{"title":"New Results for the Open Cluster Bica 6 and its Associated Planetary Nebula Abell 8","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.SR","authors_text":"Arne A. Henden, Daniel J. Majaess, David D. Balam, David G. Turner, David J. Lane, Joanne M. Rosvick","submitted_at":"2011-09-27T20:00:00Z","abstract_excerpt":"The likely membership of the planetary nebula Abell 8 (PN G167.0--00.9) in the open cluster Bica 6 is confirmed by CCD spectra, UBV(RI)c photometry, and radial velocities for luminous cluster stars. The reddening, estimated distance, and radial velocity of the planetary nebula agree with parameters derived for Bica 6 of E(B-V)=0.42, d=1.60+-0.11 kpc, and Vr=57+-1 km/s, with a cluster age of 1 Gyr, a diagnostic blue hook, and a few blue stragglers, including a peculiar B1 Vnn star (HDE 277593) that may be a post-AGB star. The results identify Bica 6 as a potential calibrator of the planetary ne"},"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":"1109.6006","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2011-09-27T20:00:00Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"a8f4fba48138441a97c3e1e5ba951ff06c138c1afeb79c458b73241a69bc4609","abstract_canon_sha256":"6f49a4082da1f3f301d2fd0af6a2a9cb17a529d3c36ce6e212164a5bdad195e4"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:00:22.525708Z","signature_b64":"5TWBvxIfeL9hoTxmMcXFkUFaU7cLUF9R30Mg8IMwJXIeEcYooRTle7tS7yYjYy5bdcwUj54/vDNA7t+CVz8wCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"704aadd556d9eff790a09380e20f081f49885e2b788ac1b51013fa34b33f6fa7","last_reissued_at":"2026-05-18T02:00:22.525042Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:00:22.525042Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"New Results for the Open Cluster Bica 6 and its Associated Planetary Nebula Abell 8","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.SR","authors_text":"Arne A. Henden, Daniel J. Majaess, David D. Balam, David G. Turner, David J. Lane, Joanne M. Rosvick","submitted_at":"2011-09-27T20:00:00Z","abstract_excerpt":"The likely membership of the planetary nebula Abell 8 (PN G167.0--00.9) in the open cluster Bica 6 is confirmed by CCD spectra, UBV(RI)c photometry, and radial velocities for luminous cluster stars. The reddening, estimated distance, and radial velocity of the planetary nebula agree with parameters derived for Bica 6 of E(B-V)=0.42, d=1.60+-0.11 kpc, and Vr=57+-1 km/s, with a cluster age of 1 Gyr, a diagnostic blue hook, and a few blue stragglers, including a peculiar B1 Vnn star (HDE 277593) that may be a post-AGB star. The results identify Bica 6 as a potential calibrator of the planetary ne"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1109.6006","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":"1109.6006","created_at":"2026-05-18T02:00:22.525144+00:00"},{"alias_kind":"arxiv_version","alias_value":"1109.6006v1","created_at":"2026-05-18T02:00:22.525144+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1109.6006","created_at":"2026-05-18T02:00:22.525144+00:00"},{"alias_kind":"pith_short_12","alias_value":"OBFK3VKW3HX7","created_at":"2026-05-18T12:26:37.096874+00:00"},{"alias_kind":"pith_short_16","alias_value":"OBFK3VKW3HX7PEFA","created_at":"2026-05-18T12:26:37.096874+00:00"},{"alias_kind":"pith_short_8","alias_value":"OBFK3VKW","created_at":"2026-05-18T12:26:37.096874+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/OBFK3VKW3HX7PEFASOAOEDYID5","json":"https://pith.science/pith/OBFK3VKW3HX7PEFASOAOEDYID5.json","graph_json":"https://pith.science/api/pith-number/OBFK3VKW3HX7PEFASOAOEDYID5/graph.json","events_json":"https://pith.science/api/pith-number/OBFK3VKW3HX7PEFASOAOEDYID5/events.json","paper":"https://pith.science/paper/OBFK3VKW"},"agent_actions":{"view_html":"https://pith.science/pith/OBFK3VKW3HX7PEFASOAOEDYID5","download_json":"https://pith.science/pith/OBFK3VKW3HX7PEFASOAOEDYID5.json","view_paper":"https://pith.science/paper/OBFK3VKW","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1109.6006&json=true","fetch_graph":"https://pith.science/api/pith-number/OBFK3VKW3HX7PEFASOAOEDYID5/graph.json","fetch_events":"https://pith.science/api/pith-number/OBFK3VKW3HX7PEFASOAOEDYID5/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/OBFK3VKW3HX7PEFASOAOEDYID5/action/timestamp_anchor","attest_storage":"https://pith.science/pith/OBFK3VKW3HX7PEFASOAOEDYID5/action/storage_attestation","attest_author":"https://pith.science/pith/OBFK3VKW3HX7PEFASOAOEDYID5/action/author_attestation","sign_citation":"https://pith.science/pith/OBFK3VKW3HX7PEFASOAOEDYID5/action/citation_signature","submit_replication":"https://pith.science/pith/OBFK3VKW3HX7PEFASOAOEDYID5/action/replication_record"}},"created_at":"2026-05-18T02:00:22.525144+00:00","updated_at":"2026-05-18T02:00:22.525144+00:00"}