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| Paper: |
Angular Momentum Evolution of V455 Andromedae |
| Volume: |
493, 19th European Workshop on White Dwarfs |
| Page: |
495 |
| Authors: |
Mukadam, A. S.; Pyrzas, S.; Townsley, D. M.; Gänsicke, B. T.; Hermes, J. J.; Szkody, P. |
| Abstract: |
Long-term data acquisition on the cataclysmic variable V455 Andromedae
from October 2007 to 2013 revealed its rotation period to be
67.61970396 ± 0.00000074 s. We constrain its rate of change of
spin period with time:
dPspin /dt=(–7.8±7.0)×10–15 s/s
using the O-C method, and (-6.0 ± 6.2) × 10–15 s/s
with a direct non-linear least squares fit. Given the large
uncertainties, we do not claim to find any significant detection of a
changing spin period for the duration October 2007–2013. We derive
the periodic modulation in the O-C diagram due to the orbital motion
of a clock in an elliptical orbit, and then show that this effect is
negligible for our case. |
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