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- W3081787181 abstract "A 13 yr time series of high-resolution 2 μm infrared spectra of CH Cygni has been analyzed. While confirming the previously suggested orbit of 15-16 yr, our observations show that CH Cyg is a triple system with a short-period orbit of just over 2 yr. The period ratio of 7 for CH Cyg is the smallest known for a triple system. The symbiotic pair is the short-period system. Thus, previous identification of the symbiotic system as the pair of stars in the long-period orbit as well as the interpretation of an eclipse of the hot companion in the long-period orbit are incorrect. With the addition of velocities from other sources we have determined both an eccentric and a circular orbit solution for the short-period pair. Circularization time scales and line asymmetries lead us to conclude that the circular-orbit solution is more appropriate" @default.
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- W3081787181 date "1992-01-01" @default.
- W3081787181 modified "2023-09-23" @default.
- W3081787181 title "The Triple Symbiotic System CH Cygni" @default.
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