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Astron. Astrophys. 333, 644-646 (1998)

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1. Introduction

We have made spectroscopic observations of several cool Ap stars in the Li spectral region [FORMULA]  Å with the purpose of studying the profile variations of the Li blend.

One interesting result was found for the roAp star HD 83368. The present research note gives a preliminary account of our observations of this star.

HD 83368 is an A8p SrCrEu star which is the best studied roAp star. It has been studied by Kurtz (1990), Kurtz et al. (1997) and Mathys (1991). The effective magnetic field is variable: [FORMULA]  G. The surface magnetic field is strong, with an average intensity of 11 kG.

The detailed photometric observations by Kurtz et al. of HD 83368 allowed them to obtain the value of the rotational period with high accuracy: [FORMULA] = 2.851976 [FORMULA] 0.000003 day (Kurtz et al. 1997).

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© European Southern Observatory (ESO) 1998

Online publication: April 20, 1998
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