{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2011:KWTPRRUXIR3EXPRJD655KYETQG","short_pith_number":"pith:KWTPRRUX","schema_version":"1.0","canonical_sha256":"55a6f8c69744764bbe291fbbd560938188155c1fec49b1854419e60822330ec8","source":{"kind":"arxiv","id":"1101.4319","version":2},"attestation_state":"computed","paper":{"title":"The H-alpha Variations of the Luminous Blue Variable P Cygni: Discrete Absorption Components and the Short S Doradus Phase","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Douglas R. Gies, Erica N. Hesselbach, J. R. Percy, Nancy D. Morrison, N. Markova, Noel D. Richardson","submitted_at":"2011-01-22T20:23:21Z","abstract_excerpt":"P Cygni is a prototype of the Luminous Blue Variables (or S Doradus variables), and the star displays photometric and emission line variability on a timescale of years (known as the \"short S Doradus phase\" variations). Here we present new high resolution H-alpha spectroscopy of P Cyg that we combine with earlier spectra and concurrent V-band photometry to document the emission and continuum flux variations over a 24 y time span. We show that the emission and continuum fluxes vary in concert on timescales of 1.6 y and longer, but differ on shorter timescales. The H-alpha profile shape also vari"},"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":"1101.4319","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2011-01-22T20:23:21Z","cross_cats_sorted":[],"title_canon_sha256":"57fd92a92aa343828506e98bb1b908864fbd8ae4562337b638a76306f79b41a3","abstract_canon_sha256":"01cfaf7572e4294624e4b733225d41dd0aba91895518cdcb8c6050a7e9ed1267"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:03:25.307967Z","signature_b64":"w3EvrjwXvBaW8tZTF2IDWje8ZUDwck3SBLSpcndSCbcoQrzzE3eDG3P/NbsO+lhq/zS4SbRvmqj8223IbYh5BQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"55a6f8c69744764bbe291fbbd560938188155c1fec49b1854419e60822330ec8","last_reissued_at":"2026-05-18T02:03:25.307438Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:03:25.307438Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"The H-alpha Variations of the Luminous Blue Variable P Cygni: Discrete Absorption Components and the Short S Doradus Phase","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Douglas R. Gies, Erica N. Hesselbach, J. R. Percy, Nancy D. Morrison, N. Markova, Noel D. Richardson","submitted_at":"2011-01-22T20:23:21Z","abstract_excerpt":"P Cygni is a prototype of the Luminous Blue Variables (or S Doradus variables), and the star displays photometric and emission line variability on a timescale of years (known as the \"short S Doradus phase\" variations). Here we present new high resolution H-alpha spectroscopy of P Cyg that we combine with earlier spectra and concurrent V-band photometry to document the emission and continuum flux variations over a 24 y time span. We show that the emission and continuum fluxes vary in concert on timescales of 1.6 y and longer, but differ on shorter timescales. The H-alpha profile shape also vari"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1101.4319","kind":"arxiv","version":2},"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":"1101.4319","created_at":"2026-05-18T02:03:25.307511+00:00"},{"alias_kind":"arxiv_version","alias_value":"1101.4319v2","created_at":"2026-05-18T02:03:25.307511+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1101.4319","created_at":"2026-05-18T02:03:25.307511+00:00"},{"alias_kind":"pith_short_12","alias_value":"KWTPRRUXIR3E","created_at":"2026-05-18T12:26:34.985390+00:00"},{"alias_kind":"pith_short_16","alias_value":"KWTPRRUXIR3EXPRJ","created_at":"2026-05-18T12:26:34.985390+00:00"},{"alias_kind":"pith_short_8","alias_value":"KWTPRRUX","created_at":"2026-05-18T12:26:34.985390+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/KWTPRRUXIR3EXPRJD655KYETQG","json":"https://pith.science/pith/KWTPRRUXIR3EXPRJD655KYETQG.json","graph_json":"https://pith.science/api/pith-number/KWTPRRUXIR3EXPRJD655KYETQG/graph.json","events_json":"https://pith.science/api/pith-number/KWTPRRUXIR3EXPRJD655KYETQG/events.json","paper":"https://pith.science/paper/KWTPRRUX"},"agent_actions":{"view_html":"https://pith.science/pith/KWTPRRUXIR3EXPRJD655KYETQG","download_json":"https://pith.science/pith/KWTPRRUXIR3EXPRJD655KYETQG.json","view_paper":"https://pith.science/paper/KWTPRRUX","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1101.4319&json=true","fetch_graph":"https://pith.science/api/pith-number/KWTPRRUXIR3EXPRJD655KYETQG/graph.json","fetch_events":"https://pith.science/api/pith-number/KWTPRRUXIR3EXPRJD655KYETQG/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/KWTPRRUXIR3EXPRJD655KYETQG/action/timestamp_anchor","attest_storage":"https://pith.science/pith/KWTPRRUXIR3EXPRJD655KYETQG/action/storage_attestation","attest_author":"https://pith.science/pith/KWTPRRUXIR3EXPRJD655KYETQG/action/author_attestation","sign_citation":"https://pith.science/pith/KWTPRRUXIR3EXPRJD655KYETQG/action/citation_signature","submit_replication":"https://pith.science/pith/KWTPRRUXIR3EXPRJD655KYETQG/action/replication_record"}},"created_at":"2026-05-18T02:03:25.307511+00:00","updated_at":"2026-05-18T02:03:25.307511+00:00"}