AL Col is a slowly rotating Ap/Bp star (10.357 d period) with rare-earth overabundances up to ~5 dex and a helium deficit, per TESS photometry and HARPS spectroscopy.
Statistical Analysis of the New Catalogue of CP Stars
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Unveiling the Variability and Chemical Composition of AL Col
AL Col is a slowly rotating Ap/Bp star (10.357 d period) with rare-earth overabundances up to ~5 dex and a helium deficit, per TESS photometry and HARPS spectroscopy.