EDP Sciences
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Volume 416, Number 1, March II 2004
Page(s) 319 - 322
Section Stellar structure and evolution
DOI http://dx.doi.org/10.1051/0004-6361:20034580

A&A 416, 319-322 (2004)
DOI: 10.1051/0004-6361:20034580

Research Note

On the close optical companion of V1494 Aql: Problems with light curve modelling

L. L. Kiss1, B. Csák2 and A. Derekas1

1  School of Physics, University of Sydney 2006, Australia
2  Department of Experimental Physics and Astronomical Observatory, University of Szeged, Szeged, Dóm tér 9., 6720 Hungary

(Received 27 October 2003 / Accepted 9 December 2003)

New observations of the eclipsing nova V1494 Aql were analysed to estimate the effect of the optical companion located 1 $\farcs$4 to the southwest. R and I-band images (stellar $FWHM\approx1\farcs2{-}1\farcs4$) taken close to the primary minimum were used to determine relative magnitude differences between the nova and the companion, which were found to be $\Delta R\approx0\fm20$ and $\Delta
I\approx0\fm52$ (in the sense nova minus companion). After correcting R-band time-series observations for the secondary light, the eclipse depth has been found to be almost twice as deep. Before modelling any late eclipsing light curve that is available in the literature, the data must be corrected for the light of the companion.

Key words: stars: novae, cataclysmic variables -- stars: individual: V1494 Aql

Offprint request: L. L. Kiss, laszlo@physics.usyd.edu.au

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