在四重星系中的两个接触双星的磁性活动
1School of Physics and Electronic Information, Huaibei Normal University, Huaibei, 235000, China. yygcn@163.com.
Scientific reports
|July 27, 2025
概括
本研究使用TESS数据分析了两个接触二进制星,V752 Cen和HT Vir. 研究人员发现了星斑和第三体的证据,估计了它们的质量并更新了二进制参数.
科学领域:
- * 天体物理学和恒星天文学.
- *系外行星研究和双星系统.
背景情况:
- *接触双星对于理解恒星进化和动态至关重要.
- * 层次四重星系为研究恒星相互作用提供了复杂的环境.
研究的目的:
- * 为了研究两个接触双星V752 Cen和HT Vir在四重系统中的行为.
- * 分析光线曲线的星点活动和轨道变化.
- * 在这些系统中检测和描述潜在的第三方机构.
主要方法:
- *利用过境系外行星探测卫星 (TESS) 的连续光曲线 (LCs).
- * 采用威尔逊-德文尼程序用于光度解决方案和星点分析.
- *确定日食时间 (ETs) 和分析轨道异常的余量.
- * 构建了OC图,以识别来自第三体的光时效应 (LiTE).
主要成果:
- * 观测到 LC 的近期变化和跳跃,归因于星点活动.
- *星斑显著影响了LC特征,包括最小深度.
- *确定了529个被研究的二进制星系的日食时间 (ET).
- *在HT病毒的残留物中确定了反相关性,证实了星斑.
- *构造的OC曲线表示LiTE,暗示第三体的存在.
- * 估计HT Vir ([公式:见文本]) 和V752 Cen ([公式:见文本]) 的第三个体质.
结论:
- *星点活动是影响接触双星观测到的光曲线的一个重要因素.
- * 在V752 Cen和HT Vir系统中证实了第三体的存在.
- *更新了V752 Cen和HT Vir的组成部分的绝对参数,显示它们是正常或略微进化的主序恒星.
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