A Time Evolution Study of the Superhumps of the Dwarf Nova 1RXS J232953.9+062814 by Wavelet Transform |
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| Authors: | Ai-Ying Zhou Yu-Lei Qiu |
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| Institution: | (1) National Astronomical Observatories, Chinese Academy of Sciences, Beijing, 100012, China |
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| Abstract: | The time evolution behaviour of the superhumps of the dwarf nova1RXS J232953.9+ 062814 is investigated with the wavelet analysis
method. On the basis of two nights CCD photometry performed during its first superoutburst as well as other published brightness
data, we reveal the superhump's time-dependence as a function of periods and time. Our light curves, which phased in the rapid
decay ending portion of the superoutburst and in the dawn of a following normal outburst, are important to help trace the
superhump evolution for the star. Both the superhump period and the orbital period of the binary system are detected in the
present data. We obtain P
sh=0.0458±0.0002d and P
orb=0.0450±0.0002d. They agree with those existing values. The two periods exchanged their roles during the superhump evolution.
The general profile of brightness fading over the outbursts roughly followed an exponential decay law or a form of a five-order
polynomial.
This revised version was published online in July 2006 with corrections to the Cover Date. |
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| Keywords: | stars: novae: dwarf nova stars: CVs: individual: 1RXS J232953 9+062814 techniques: photometric |
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