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The period variation of YZ Bootis

The period variation of YZ Bootis

Chinese Astronomy and Astrophysics, 1986
Abstract
Abstract On the basis of a re-examination of hitherto published photoelectric maximum times plus some of our photoelectric observations we found that the period of YZ Boo is increasing at 0.026 ± 0.0004 seconds per century, or (8.3 ± 1.1) × 10 −12 d d .

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