Gerald D. Rude II, F. A. Ringwald
We present a time-resolved differential photometric study and time series
analysis of the nova-like cataclysmic variable star LQ Peg. We discover three
periodicities in the photometry, one with a period of 3.42 +/- 0.03 hours, and
another with a period of 56.8 +/- 0.01 hours. We interpret these to be the
apsidal superhump and precessional periods of the accretion disk, respectively,
and predict that the orbital period of LQ Peg is 3.22 +/- 0.03 hours. The third
periodicity, with a period of 41.3 +/- 0.01 hours, we interpret to be the nodal
precessional period of the accretion disk. We also report a flare that lasted
four minutes and had an energy in visible light of (1.2 +/- 0.3) x 10^36 ergs,
or 10^4-5 times more energetic than the largest solar flares, comparable to the
most energetic visible-light stellar flares known. We calculate the absolute
magnitude of LQ Peg to be M_J = 4.78 +/- 0.54, and its distance to be 800 +/-
200 pc.
View original:
http://arxiv.org/abs/1111.0346
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