A&A 448, 1107-1110 (2006)
DOI: 10.1051/0004-6361:20047022

The possible orbital period of the nova V1493 Aquilae

A. Dobrotka¹, M. Friedjung², A. Retter^{3, 4}, L. Hric⁵ and R. Novak<sup>6

1</sup>  Departement of Physics, Faculty of Materials Science and Technology, Slovak University of Technology in Bratislava, Paulínska 16, 91724 Trnava, The Slovak Republic
    e-mail: andrej.dobrotka@stuba.sk
²  Institut d'Astrophysique de Paris, 98 bis boulevard Arago, 75014 Paris, France
    e-mail: fried@iap.fr
³  Departement of Astronomy and Astrophysics, Penn State University, 525 Davey Lab, University Park, PA, 16802-6305, USA
    e-mail: retter@astro.psu.edu
⁴  School of Physics, University of Sydney, 2006, Australia
⁵  Astronomical Institute of the Slovak Academy of Sciences, 05960 Tatranská Lomnica, The Slovak Republic
    e-mail: hric@ta3.sk
⁶  Nicholas Copernicus Observatory and Planetarium in Brno, Kraví Hora 2, 61600 Brno, Czech Republic
    e-mail: novak@hvezdarna.cz

(Received 7 January 2004 / Accepted 8 November 2005)

Abstract
Aims.Period analysis of CCD photometry of V1493 Aql (Nova Aql 1999 No. 1) performed during 12 nights through I and R filters a few weeks after maximum is presented.
Methods.The PDM method for period analysis (Stellingwerf 1978, ApJ, 224, 953) is used.
Results.The photometric data is modulated with a period of  d. Following the sinusoidal shape of the phased light curve, we interpret this periodicity as possibly orbital in nature and that is consistent with a cataclysmic variable above the period gap.

Key words: binaries: close -- binaries: eclipsing -- novae, cataclysmic variable

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