CYCLE LENGTH CHANGES OF THE SRd VARIABLE UU HER?

Best fit periods for individual seasons show variations from 27d to 101d with a possible cycle ≈ 5500d. One - and multi- frequency sine approximations of 650 photovisual observations argue for a formal 2 component model with periods P1 = 44.92 ± .06d, P2 = 70.37 ± .16d and semi-amplitudes r1 = 0.093...

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Bibliographic Details
Main Authors: A. I. Pikhun, I. L. Andronov
Format: Article
Language:English
Published: Odessa I. I. Mechnykov National University 2017-07-01
Series:Odessa Astronomical Publications
Online Access:http://oap.onu.edu.ua/article/view/105776