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Period and period change measurements for 143 SuperWASP eclipsing binary candidates near the short-period limit and discovery of a doubly eclipsing quadruple system

机译:在短期限制附近的143个superWasp食双星候选者的周期和周期变化测量以及发现双重吞噬四重系统

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摘要

Building on previous work, a new search of the SuperWASP archive was carried out to identify eclipsing binary systems near the short-period limit. 143 candidate objects were detected with orbital periods between 16 000 and 20 000 s, of which 97 are new discoveries. Period changes significant at 1σ or more were detected in 74 of these objects, and in 38 the changes were significant at 3σ or more. The significant period changes observed followed an approximately normal distribution with a half-width at half-maximum of ~0.1 s yr. There was no apparent relationship between period length and magnitude or direction of period change. Amongst several interesting individual objects studied, 1SWASP J093010.78+533859.5 is presented as a new doubly eclipsing quadruple system, consisting of a contact binary with a 19 674.575 s period and an Algol-type binary with a 112 799.109 s period, separated by 66.1 AU, being the sixth known system of this type.
机译:在以前的工作的基础上,对SuperWASP档案进行了新的搜索,以识别在短期内接近极限的日蚀二进制系统。探测到143个候选物体,其轨道周期在16 000至20 000 s之间,其中97个是新发现的。在其中74个对象中检测到1σ或更大的周期变化,在38个对象中检测到3σ或更大的周期变化是显着的。观察到的显着周期变化遵循近似正态分布,半峰最大半峰宽度约为0.1 s年。周期长度与周期变化的大小或方向之间没有明显的关系。在研究的几个有趣的单个对象中,将1SWASP J093010.78 + 533859.5作为一个新的双蚀四重系统提出,该系统由周期为19 674.575 s的接触二进制和周期为112 799.109 s的Algol型二进制由66.1隔开。 AU,是第六种此类已知系统。

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