短周期接触二元GY Psc的首次研究

IF 2.1 4区物理与天体物理 Q2 ASTRONOMY & ASTROPHYSICS

New Astronomy Pub Date : 2025-01-21 DOI:10.1016/j.newast.2025.102358

Bin Zhang , Yidan Gao

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引用次数: 0

摘要

本文首次对短周期食双星GY Psc进行了研究。我们发现gypsc是一个浅w亚型双星，质量比q = 2.522。我们还发现它的光曲线表现出不同的奥康奈尔效应，这可以用冷星黑子的演化来解释。同时，O−C图显示周期为P=3.85年，振幅为0.033883天的周期振荡。这种循环振荡被解释为光通过恒星黑洞候选者的存在而产生的走时效应。第三伴星的最小质量估计为M3 = 12.99 M⊙。所有结果表明，GY Psc可能是一个具有活跃星斑活动的三重系统。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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The first study of the short period contact binary GY Psc

In this paper, we present the first investigation of the short period eclipsing binary GY Psc. We find that GY Psc is a shallow W-subtype binary with a mass ratio of

q

= 2.522. We also find that its light curves show different O’Connell effect, which can be explained by the evolution of the cool star-spots. At the same time, the

O - C

diagram reveals a cyclic oscillation with a period of

P = 3.85

years and an amplitude of 0.033883 days. The cyclic oscillation is interpreted as the light travel-time effect via the presence of a stellar black hole candidate. The minimum mass of the tertiary companion is estimated to be

M_{3}

= 12.99

M_{⊙}

. All the results reveal that GY Psc may be a triple system with active star-spot activity.

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来源期刊

New Astronomy 地学天文-天文与天体物理

CiteScore

4.00

自引率

10.00%

发文量

109

审稿时长

13.6 weeks

期刊介绍： New Astronomy publishes articles in all fields of astronomy and astrophysics, with a particular focus on computational astronomy: mathematical and astronomy techniques and methodology, simulations, modelling and numerical results and computational techniques in instrumentation. New Astronomy includes full length research articles and review articles. The journal covers solar, stellar, galactic and extragalactic astronomy and astrophysics. It reports on original research in all wavelength bands, ranging from radio to gamma-ray.