{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2016:A6ASPFLAAXYHG4CYXHHH36QQDH","short_pith_number":"pith:A6ASPFLA","schema_version":"1.0","canonical_sha256":"078127956005f0737058b9ce7dfa1019d1fd913a1087e3af33e926ee3db0e02e","source":{"kind":"arxiv","id":"1610.09662","version":1},"attestation_state":"computed","paper":{"title":"Hot DA white dwarf model atmosphere calculations: Including improved Ni PI cross sections","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.atom-ph"],"primary_cat":"astro-ph.SR","authors_text":"I. Hubeny, J. B. Holberg, M. A. Barstow, N. R. Badnell, S. P. Preval","submitted_at":"2016-10-30T15:32:44Z","abstract_excerpt":"To calculate realistic models of objects with Ni in their atmospheres, accurate atomic data for the relevant ionization stages needs to be included in model atmosphere calculations. In the context of white dwarf stars, we investigate the effect of changing the Ni {\\sc iv}-{\\sc vi} bound-bound and bound-free atomic data has on model atmosphere calculations. Models including PICS calculated with {\\sc autostructure} show significant flux attenuation of up to $\\sim 80$\\% shortward of 180\\AA\\, in the EUV region compared to a model using hydrogenic PICS. Comparatively, models including a larger set "},"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":"1610.09662","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-10-30T15:32:44Z","cross_cats_sorted":["physics.atom-ph"],"title_canon_sha256":"ffe2cce6c4975879fea359e0e983104935fb5fc5d9b45ab8af45e9d3ad5734e5","abstract_canon_sha256":"feab3a2fb7d6e9369e7ef4ff20050f853e31e81484ae8b6281c3d64b5f54bf59"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:55:06.685596Z","signature_b64":"Zp3RPZzyqfYY6O58emUCFiXlUmf1c2MkVTt4v6JUPzZIdoc1tGw0IOW3ApGikHQVPDyvqvFRcp60gfqPgfJiAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"078127956005f0737058b9ce7dfa1019d1fd913a1087e3af33e926ee3db0e02e","last_reissued_at":"2026-05-18T00:55:06.684880Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:55:06.684880Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Hot DA white dwarf model atmosphere calculations: Including improved Ni PI cross sections","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.atom-ph"],"primary_cat":"astro-ph.SR","authors_text":"I. Hubeny, J. B. Holberg, M. A. Barstow, N. R. Badnell, S. P. Preval","submitted_at":"2016-10-30T15:32:44Z","abstract_excerpt":"To calculate realistic models of objects with Ni in their atmospheres, accurate atomic data for the relevant ionization stages needs to be included in model atmosphere calculations. In the context of white dwarf stars, we investigate the effect of changing the Ni {\\sc iv}-{\\sc vi} bound-bound and bound-free atomic data has on model atmosphere calculations. Models including PICS calculated with {\\sc autostructure} show significant flux attenuation of up to $\\sim 80$\\% shortward of 180\\AA\\, in the EUV region compared to a model using hydrogenic PICS. Comparatively, models including a larger set "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1610.09662","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":"1610.09662","created_at":"2026-05-18T00:55:06.684977+00:00"},{"alias_kind":"arxiv_version","alias_value":"1610.09662v1","created_at":"2026-05-18T00:55:06.684977+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1610.09662","created_at":"2026-05-18T00:55:06.684977+00:00"},{"alias_kind":"pith_short_12","alias_value":"A6ASPFLAAXYH","created_at":"2026-05-18T12:30:04.600751+00:00"},{"alias_kind":"pith_short_16","alias_value":"A6ASPFLAAXYHG4CY","created_at":"2026-05-18T12:30:04.600751+00:00"},{"alias_kind":"pith_short_8","alias_value":"A6ASPFLA","created_at":"2026-05-18T12:30:04.600751+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/A6ASPFLAAXYHG4CYXHHH36QQDH","json":"https://pith.science/pith/A6ASPFLAAXYHG4CYXHHH36QQDH.json","graph_json":"https://pith.science/api/pith-number/A6ASPFLAAXYHG4CYXHHH36QQDH/graph.json","events_json":"https://pith.science/api/pith-number/A6ASPFLAAXYHG4CYXHHH36QQDH/events.json","paper":"https://pith.science/paper/A6ASPFLA"},"agent_actions":{"view_html":"https://pith.science/pith/A6ASPFLAAXYHG4CYXHHH36QQDH","download_json":"https://pith.science/pith/A6ASPFLAAXYHG4CYXHHH36QQDH.json","view_paper":"https://pith.science/paper/A6ASPFLA","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1610.09662&json=true","fetch_graph":"https://pith.science/api/pith-number/A6ASPFLAAXYHG4CYXHHH36QQDH/graph.json","fetch_events":"https://pith.science/api/pith-number/A6ASPFLAAXYHG4CYXHHH36QQDH/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/A6ASPFLAAXYHG4CYXHHH36QQDH/action/timestamp_anchor","attest_storage":"https://pith.science/pith/A6ASPFLAAXYHG4CYXHHH36QQDH/action/storage_attestation","attest_author":"https://pith.science/pith/A6ASPFLAAXYHG4CYXHHH36QQDH/action/author_attestation","sign_citation":"https://pith.science/pith/A6ASPFLAAXYHG4CYXHHH36QQDH/action/citation_signature","submit_replication":"https://pith.science/pith/A6ASPFLAAXYHG4CYXHHH36QQDH/action/replication_record"}},"created_at":"2026-05-18T00:55:06.684977+00:00","updated_at":"2026-05-18T00:55:06.684977+00:00"}