Orbital Period Changes in WZ Sagittae
2018
We report a long-term (1961-2017) study of the eclipse times in the dwarf nova WZ Sagittae, in an effort to learn its rate of orbital-period change. Some wiggles with a time scale of 20-50 years are apparent, and a connection with the 23-year interval between dwarf-nova eruptions is possible. These back-and-forth wiggles dominate the O-C diagram, and prevent a secure measurement of the steady rate of orbital-period change.
The line, it is drawn, the curse, it is cast.
The slow one now will later be fast...
For the times, they are a-changin'.
- Dylan (1963)
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