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2018PASP..130f4202P - Publ. Astron. Soc. Pac., 130, part no 6, 4202-64202 (2018/June-0)

Orbital period changes in WZ Sagittae.

PATTERSON J., STONE G., KEMP J., SKILLMAN D.R., DE MIGUEL E., POTTER M., STARKEY D., UTHAS H., JONES J., SLAUSON D., KOFF R., MYERS G., MENZIES K., CAMPBELL T., ROBERTS G., FOOTE J., VANMUNSTER T., COOK L.M., KRAJCI T., OGMEN Y., SABO R. and SEARGEANT J.

Abstract (from CDS):

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 timescale 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.

Abstract Copyright: © 2018. The Astronomical Society of the Pacific. All rights reserved.

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