{"paper":{"title":"HD 99458: First time ever Ap-type star as a $\\delta$ Scuti pulsator in a short period eclipsing binary?","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"A. Hatzes, D. Dupkala, E. Guenther, E. Kundra, E. Paunzen, J. Budaj, J. Dvo\\v{r}\\'akov\\'a, J. Krti\\v{c}ka, L. Hamb\\'alek, M. Bla\\v{z}ek, M. Fedurco, M. Skarka, M. Va\\v{n}ko, M. \\v{S}lechta, P. Kab\\'ath, S. Sabotta, T. Klocov\\'a, T. Pribulla, V. Koll\\'ar, \\v{S}. Parimucha, Z. Mikul\\'a\\v{s}ek","submitted_at":"2019-06-05T08:23:10Z","abstract_excerpt":"We present the discovery of a unique object, a chemically peculiar Ap-type star showing $\\delta$ Scuti pulsations which is bound in an eclipsing binary system with an orbital period shorter than 3 days. HD 99458 is, therefore, a complex astrophysical laboratory opening doors for studying various, often contradictory, physical phenomena at the same time. It is the first Ap star ever discovered in an eclipsing binary. The orbital period of 2.722 days is the second shortest among all known chemically peculiar (CP2) binary stars. Pulsations of $\\delta$ Scuti type are also extremely rare among CP2 "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1906.01877","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"}