{"paper":{"title":"K I 7699 {\\AA} and related shell lines during the recent eclipse of $\\epsilon$ Aurigae","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"C. Muthumariappan, I.S. Potravnov, K. Jayakumar, M. Appakutty, M. Parthasarathy, R. Leadbeater","submitted_at":"2014-09-19T00:33:02Z","abstract_excerpt":"We report high-resolution (R = 30\\ 000, 45\\ 000 and 75\\ 000) echelle and medium-resolution (R = 22\\ 000 and 10\\ 000) spectroscopic observations of the long-period, eclipsing binary $\\epsilon$ Aurigae during the 2009 - 2011 eclipse. Low-excitation shell lines, viz, the K {\\sevensize \\rm I} line at 7699 \\AA\\ (with 346 data points), Cr {\\sevensize \\rm I} lines at 5345.807 \\AA\\ and 5348.326 \\AA\\ and Fe {\\sevensize \\rm I} line at 5110.435 \\AA\\ which originated from the disk shaped secondary, H$\\alpha$ and the shell components of the Na D$_{1}$ and D$_{2}$ lines show significant variation in their s"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1409.5493","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"}