Photometric observations of an extreme mass ratio overcontact binary

IF 0.4 4区物理与天体物理 Q4 ASTRONOMY & ASTROPHYSICS

Contributions of the Astronomical Observatory Skalnate Pleso Pub Date : 2020-03-01 DOI:10.31577/caosp.2020.50.2.611

X. Zhou, B. Soonthornthum, S. Qian

引用次数: 2

Abstract

Our RC and IC light curves of CSS J135012.1+272259 were analyzed with the Wilson-Devinney (W-D) program. The results reveal that CSS J135012.1+272259 is an extreme mass ratio overcontact binary with mass ratio q = 0.147. It may be in the final evolutionary stage of cool short-period binaries and merge into a single rapid-rotation star to form a blue straggler or FK Com type star. Also, 25 extreme mass ratio overcontact binary systems (q ≤ 0.15) are collected for long-term monitoring. These targets will improve understanding of the pre-outburst state of overcontact binaries and enrich knowledge of the merger mechanism.

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极端质量比过接触双星的光度观测

我们用Wilson-Devinney (W-D)程序分析了CSS J135012.1+272259的RC和IC光曲线。结果表明，CSS J135012.1+272259是一颗质量比q = 0.147的极端质量比过接触双星。它可能处于低温短周期双星演化的最后阶段，并合并成一颗快速旋转的恒星，形成一颗蓝离散星或fk.com型恒星。收集了25个极值质量比过接触双星系统(q≤0.15)进行长期监测。这些目标将提高对过接触双星的预突出状态的认识，丰富对合并机制的认识。

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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来源期刊

Contributions of the Astronomical Observatory Skalnate Pleso 地学天文-天文与天体物理

CiteScore

1.10

自引率

20.00%

发文量

审稿时长

>12 weeks

期刊介绍： Contributions of the Astronomical Observatory Skalnate Pleso" (CAOSP) is published by the Astronomical Institute of the Slovak Academy of Sciences (SAS). The journal publishes new results of astronomical and astrophysical research, preferentially covering the fields of Interplanetary Matter, Stellar Astrophysics and Solar Physics. We publish regular papers, expert comments and review contributions.