The close binary ZZ aurigae

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Scientific paper

Between December 23-29, 1981, we made photoelectric observations of ZZ Aur at the Yunnan Observatory and obtained 603 measurements in yellow light and 604 measurements in blue light. We thereby secured the epochs of two principal minima and two secondary minima and discovered that the period of ZZ Aur was just beginning to change. We found the main component to have spectral type A5V and the secondary component, GOV, and we think that this system may be a main sequence binary at the limit of stability.

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