Differential lightcurve of the Cataclysmic Variable CW 1045+525
Abstract
We present differential photometry of the Cataclysmic Variable CW 1045+525. The data were taken by undergraduate students at Hoher List Observatory on March 10-14, 1999, in the framework of the Astronomisches Beobachtungspraktikum of the Ruhr-Universität Bochum. At our disposal we had a Cassegrain reflector (D=1.06 m, f=3.68 m) using a Ford Loral FA2048 CCD and a Johnson V filter. The system was observed in 5 different nights for several hours. Typical integration times were chosen around 120 s comprising a sufficient time-resolution and S/N for a system of B=16.5 mag. Standard reduction was performed with IRAF packages using overscan and skyflats, while aperture photometry was done with the DAOPHOT package. Additional C-routines were applied for enhanced calculation of the average lightcurve from the data of several comparison stars. Subtracting of the average from the target data yielded the differential lightcurve of the object. A first look at the data reveals that the resulting lightcurve is dominated by a probably orbital periodic variation. At this stage of our analysis we can confirm that CW 1045+525 is definitely a system situated above the period gap; we will present the final results of the study in our poster.
- Publication:
-
Astronomische Gesellschaft Abstract Series
- Pub Date:
- 1999
- Bibcode:
- 1999AGAb...15..110B