Astronomy and Astrophysics – Astronomy
Scientific paper
Feb 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994mnras.266..703h&link_type=abstract
Monthly Notices of the Royal Astronomical Society, Vol. 266, NO. 3/FEB1, P. 703, 1994
Astronomy and Astrophysics
Astronomy
6
Binaries: Close - Stars: Individual: Re0751+14 - Novae, Cataclysmic Variables - X-Rays: Stars
Scientific paper
CCD photometry in the standard Rc band of the BVRIc system is presented of the EUV source RE0751+14, which was discovered from ROSAT WFC observations to be an intermediate polar type of cataclysmic variable. Observations were secured on a total of five nights, with the longest continuous run being 7.7 h. The data on all nights confirm the 13.9-min periodicity seen in the X-ray data, but the amplitude of this variation is strongly modulated from the mean of about 10 per cent up to values of about 20 per cent and down to zero. On the three longer runs, evidence is found for an additional period of 1.14 h, which might serve to explain the modulated behaviour of the 13.9-min variation. There are additional longer-term variations (of the order of hours) ranging over 0.3 mag seen on individual nights, and the total range of differential Rc-band magnitudes for RE0751+14 reported here is 0.5 mag. When these data are phased according to the tentatively proposed orbital period of the system of 5.5±0.5 h, the resultant light curve is a scatter diagram. This set of data is not sufficient to establish a periodicity for the longer-term variations.
Bell Aaron S.
Hilditch Ron W.
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