{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2006:D35U5EBKUBTKWXSICRTKXFPGDU","short_pith_number":"pith:D35U5EBK","schema_version":"1.0","canonical_sha256":"1efb4e902aa066ab5e481466ab95e61d1453d733f7b4f9cfbf3a07a368ccccf7","source":{"kind":"arxiv","id":"astro-ph/0611832","version":1},"attestation_state":"computed","paper":{"title":"Chemical Homogeneity in Collinder 261 and Implications for Chemical Tagging","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"G.M. De Silva, J. Bland-Hawthorn, K.C. Freeman, M. Asplund, M.S. Bessell, R. Collet","submitted_at":"2006-11-28T01:34:59Z","abstract_excerpt":"This paper presents abundances for 12 red giants of the old open cluster Collinder 261 based on spectra from VLT/UVES. Abundances were derived for Na, Mg, Si, Ca, Mn, Fe, Ni, Zr and Ba. We find the cluster has a solar-level metallicity of [Fe/H] = -0.03 dex. However some alpha elements were found to be enhanced. The star-to-star scatter was consistent with the expected measurement uncertainty for all elements. The observed rms scatter is as follows: Na = 0.07, Mg = 0.05, Si = 0.06, Ca = 0.05, Mn = 0.03, Fe = 0.02, Ni = 0.04, Zr = 0.12, and Ba = 0.03 dex. The intrinsic scatter was estimated to "},"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":"astro-ph/0611832","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2006-11-28T01:34:59Z","cross_cats_sorted":[],"title_canon_sha256":"172e0514d8319d334731826cc7efdb39c5a912ac4b0eb3e995f97c03c80a8cb0","abstract_canon_sha256":"0e1d643c4421bafcc173b3cca6a293e7ca8aab9666d24d5bb3cd1d81f5d118a5"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T15:24:58.198637Z","signature_b64":"rFQ5UQVb/iy2CbbH90E5bJ6RUMi9sFftJ6yb30jYwItqD6UKdPVPemU4knM6drqhtTRT5NQ3Yn930yYwL15wDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1efb4e902aa066ab5e481466ab95e61d1453d733f7b4f9cfbf3a07a368ccccf7","last_reissued_at":"2026-07-04T15:24:58.198209Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T15:24:58.198209Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Chemical Homogeneity in Collinder 261 and Implications for Chemical Tagging","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"G.M. De Silva, J. Bland-Hawthorn, K.C. Freeman, M. Asplund, M.S. Bessell, R. Collet","submitted_at":"2006-11-28T01:34:59Z","abstract_excerpt":"This paper presents abundances for 12 red giants of the old open cluster Collinder 261 based on spectra from VLT/UVES. Abundances were derived for Na, Mg, Si, Ca, Mn, Fe, Ni, Zr and Ba. We find the cluster has a solar-level metallicity of [Fe/H] = -0.03 dex. However some alpha elements were found to be enhanced. The star-to-star scatter was consistent with the expected measurement uncertainty for all elements. The observed rms scatter is as follows: Na = 0.07, Mg = 0.05, Si = 0.06, Ca = 0.05, Mn = 0.03, Fe = 0.02, Ni = 0.04, Zr = 0.12, and Ba = 0.03 dex. The intrinsic scatter was estimated to "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0611832","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/astro-ph/0611832/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":"astro-ph/0611832","created_at":"2026-07-04T15:24:58.198266+00:00"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0611832v1","created_at":"2026-07-04T15:24:58.198266+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0611832","created_at":"2026-07-04T15:24:58.198266+00:00"},{"alias_kind":"pith_short_12","alias_value":"D35U5EBKUBTK","created_at":"2026-07-04T15:24:58.198266+00:00"},{"alias_kind":"pith_short_16","alias_value":"D35U5EBKUBTKWXSI","created_at":"2026-07-04T15:24:58.198266+00:00"},{"alias_kind":"pith_short_8","alias_value":"D35U5EBK","created_at":"2026-07-04T15:24:58.198266+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":1,"sample":[{"citing_arxiv_id":"2608.10866","citing_title":"Spectroscopic Binary Detection as Agent-Callable Tools: Detecting 40,000+ Main-Sequence Binary Candidates from SDSS DR19 APOGEE Spectra","ref_index":70,"is_internal_anchor":true}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/D35U5EBKUBTKWXSICRTKXFPGDU","json":"https://pith.science/pith/D35U5EBKUBTKWXSICRTKXFPGDU.json","graph_json":"https://pith.science/api/pith-number/D35U5EBKUBTKWXSICRTKXFPGDU/graph.json","events_json":"https://pith.science/api/pith-number/D35U5EBKUBTKWXSICRTKXFPGDU/events.json","paper":"https://pith.science/paper/D35U5EBK"},"agent_actions":{"view_html":"https://pith.science/pith/D35U5EBKUBTKWXSICRTKXFPGDU","download_json":"https://pith.science/pith/D35U5EBKUBTKWXSICRTKXFPGDU.json","view_paper":"https://pith.science/paper/D35U5EBK","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=astro-ph/0611832&json=true","fetch_graph":"https://pith.science/api/pith-number/D35U5EBKUBTKWXSICRTKXFPGDU/graph.json","fetch_events":"https://pith.science/api/pith-number/D35U5EBKUBTKWXSICRTKXFPGDU/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/D35U5EBKUBTKWXSICRTKXFPGDU/action/timestamp_anchor","attest_storage":"https://pith.science/pith/D35U5EBKUBTKWXSICRTKXFPGDU/action/storage_attestation","attest_author":"https://pith.science/pith/D35U5EBKUBTKWXSICRTKXFPGDU/action/author_attestation","sign_citation":"https://pith.science/pith/D35U5EBKUBTKWXSICRTKXFPGDU/action/citation_signature","submit_replication":"https://pith.science/pith/D35U5EBKUBTKWXSICRTKXFPGDU/action/replication_record"}},"created_at":"2026-07-04T15:24:58.198266+00:00","updated_at":"2026-07-04T15:24:58.198266+00:00"}