CAOSP abstracts, Volume: 48, No.: 1, year: 2018

Abstract: We present the results of a spectropolarimetric study of three Am stars: β UMa, θ Leo and Alhena. Two of the three stars of this study showed peculiar magnetic signatures with prominent positive lobes, like the one of Sirius A, that are not expected in the standard theory of the Zeeman effect. Alhena, contrary to Sirius A, β UMa and θ Leo, exhibits normal signatures. The follow-up spectropolarimetric observations of Alhena allowed us to determine the magnetic properties of this star.

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Last update: February 06, 2018