Differential Stroemgren photometry of U Oph

We aim to determine absolute dimensions for the mid B-type eclipsing binary U Ophiuchi and compare the inferred ages and chemical compositions to those of other binary stars...本研究旨在测定B型中期食双星蛇夫座U（U Ophiuchi）的绝对物理尺寸，并将推导出的年龄与化学组成与其他双星系统进行对比……