... Polar[*]
Based on observations obtained at the Haute-Provence Observatory (France) and at the Loiano Observatory (Italy), operated by the Istituto Nazionale di Astrofisica.
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...[*]
Tables 2 and 3 and Figs. 4 to 6 are only available in electronic form at http://www.edpsciences.org
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Copyright ESO 2006