Institut für Astronomie und Astrophysik

Abteilung Astronomie

Preprint 03/97

A new period for the magnetic white dwarf KPD0253+5052

S. Friedrich (1,2), M. König(1), and W. Schweizer(1,3)

(1)Institut für Astronomie und Astrophysik, Astronomie, Universität Tübingen, Waldhäuser Str. 64, D-72076 Tübingen, Germany
(2)Department of Physics and Astronomy, Louisiana State University, Baton Rouge, LA 70803-4001, USA
(3)Institut für Theoretische Physik, Ruhr-Universität Bochum, D-44780 Bochum, Germany

accepted by Astronomy & Astrophysics

Abstract. We present phaseresolved circular polarisation measurements of the rotating magnetic white dwarf KPD0253+5052. A new and more accurate period of (3.79 +/- 0.05)h for KPD0253+5052 could be determined by measuring the broadband polarisation in the H_beta and H_gamma lines derived from medium resolution (about 5 Â FWHM) spectropolarimetric data at different phases.

Key words: stars: individual: KPD0253+5052 - stars: white dwarfs

Paper (68k gzip'ed Postscript including figures)

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Jürgen Barnstedt (barnstedt AT astro.uni-tuebingen.de) Last updated 10-Jul-1997