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Blazère Aurore, Petit Pascal, Neiner Coralie

The magnetic properties of Am stars

Contributions of the Astronomical Observatory Skalnate Pleso, 2018, vol. 48, pp. 48-52

Référence ADS : 2018CoSka..48...48B

Résumé :

We present the results of a spectropolarimetric study of three Am stars: beta UMa, theta 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, beta UMa and theta 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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