EDP Sciences
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Volume 418, Number 1, April IV 2004
Page(s) 249 - 254
Section Stellar structure and evolution
DOI http://dx.doi.org/10.1051/0004-6361:20034543

A&A 418, 249-254 (2004)
DOI: 10.1051/0004-6361:20034543

On the $\mathsf{\delta}$ Scuti star in the eclipsing binary WX Eridani

T. Arentoft1, 2, P. Lampens1, P. Van Cauteren3, H. W. Duerbeck4, E. García-Melendo5 and C. Sterken4

1  Koninklijke Sterrenwacht van België, Ringlaan 3, 1180 Brussel, Belgium
2  Department of Physics and Astronomy, Aarhus University, 8000 Aarhus C., Denmark
3  Beersel Hills Observatory, Laarheidestraat 166, 1650 Beersel, Belgium
4  Vrije Universiteit Brussel (VUB), Pleinlaan 2, 1050 Brussels, Belgium
5  Esteve Duran Observatory Foundation, Montseny 46 - Urb. El Montanya, 08553 Seva, Spain

(Received 21 October 2003 / Accepted 11 January 2004 )

WX Eri is an eclipsing binary system for which one component was reported to show $\delta$ Scuti type pulsations with periods close to integer fractions of the orbital period. This makes it an interesting candidate for investigating the interaction between binarity and pulsation and a potential new member of the recently defined group of mass-accreting pulsating components (gainers) in semi-detached Algol binaries called "oscillating EA" stars. We present new photometric time-series observations of this star. The Wilson-Devinney code was applied to find the best fitting model for the eclipsing binary's light curve. The aim of the observations was to investigate the short-period $\delta$ Scuti type pulsations of WX Eri. However, no evidence for the presence of such oscillations was found in our data.

Key words: stars: binaries: eclipsing -- stars: individual: WX Eri -- stars: oscillations -- $\delta$ Sct

Offprint request: T. Arentoft, toar@phys.au.dk

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