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On the apsidal motion of BP Vulpeculae

机译:BP ul虫的蠕动

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BP Vulpeculae is a bright eclipsing binary system showing apsidal motion. It was found in an earlier study that it shows retrograde apsidal motion which contradicts theory. In this paper we present the first BV light curve of the system and its light curve solution as well as seven new times of the minima from the years 1959-1963. This way we could expanded the baseline of the investigation to five decades. Based on this longer baseline we concluded that the apsidal motion is prograde agreeing with the theoretical expectations and its period is about 365 years and the determined internal structure constant is close to the theoretically expected one. (C) 2009 Elsevier B.V. All rights reserved.
机译:BP Vulpeculae是一个明亮的日蚀双星系统,显示出点动运动。在较早的研究中发现它显示出逆行的运动,这与理论相矛盾。在本文中,我们介绍了该系统的第一条BV光曲线及其光曲线解,以及从1959-1963年以来的7次新的最小值。这样,我们就可以将调查的基准范围扩展到五年。基于这个较长的基线,我们得出结论,两栖运动正进行,与理论预期相符,周期约为365年,确定的内部结构常数接近理论预期。 (C)2009 Elsevier B.V.保留所有权利。

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