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2022RNAAS...6..149P - Research Notes of the AAS, 6, 149 (2022/July-0)
Period Variation of the Close Eclipsing Binary V405 Draconis.
PYATNYTSKYY M.Y. and ANDRONOV I.L.
Abstract (from CDS):
We found a period variation of the close binary of EW type V405 Draconis. From the O - C diagram built using survey data, data from the literature, and our observations, we calculated a period increase rate (1/P)(dP/dt) of 2.72(0.03) · 10–6 yr–1. Along with the monotonic period increase, TESS data demonstrates a sign of a cyclic variation of the period. We estimated the period of such cyclic variations as 537.9(1.4) days with a semi-amplitude of 0.00200(0.00001) days. This can provide evidence for the presence of the third body in the system.
Abstract Copyright: © 2022. The Author(s). Published by the American Astronomical Society.
Journal keyword(s): Close binary stars - Eclipsing binary stars - Astronomy data analysis
Simbad objects: 1
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