{"paper":{"title":"A 10-hour period revealed in optical spectra of the highly variable WN8 Wolf-Rayet star WR 123","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"A. F. J. Moffat (U. de Montr\\'eal), A.-N. Chen\\'e (U. de Concepci\\'on, Applications, C. A. Poteet (Ritter Observatory), C. Foellmi, D. Ballereau (Observatoire de Paris-Meudon), Inc.), J. Chauville (Observatoire de Paris-Meudon), J. Zorec (IAP), NRC/HIA), N. St-Louis (U. de Montr\\'eal), S.V. Marchenko (Science Systems, U. de Valpara\\'iso","submitted_at":"2011-04-27T16:25:46Z","abstract_excerpt":"Aims. What is the origin of the large-amplitude variability in Wolf-Rayet WN8 stars in general and WR123 in particular? A dedicated spectroscopic campaign targets the ten-hour period previously found in the high-precision photometric data obtained by the MOST satellite. Methods. In June-August 2003 we obtained a series of high signal-to-noise, mid-resolution spectra from several sites in the {\\lambda}{\\lambda} 4000 - 6940 A^{\\circ} domain. We also followed the star with occasional broadband (Johnson V) photometry. The acquired spectroscopy allowed a detailed study of spectral variability on ti"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1104.5182","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"}