首页> 外文期刊>The Astrophysical journal >Interferometric Studies Of The Extreme Binary ∈ Aurigae: Pre-eclipse Observations
【24h】

Interferometric Studies Of The Extreme Binary ∈ Aurigae: Pre-eclipse Observations

机译:极端二元εAurigae的干涉测量研究:日食前的观测

获取原文
获取原文并翻译 | 示例
           

摘要

We report new and archival K-band interferometric uniform disk diameters obtained with the Palomar Testbed Interferometer for the eclipsing binary star ∈ Aurigae, in advance of the start of its eclipse in 2009. The observations were intended to test whether low-amplitude variations in the system are connected with the F supergiant star (primary), or with the intersystem material connecting the star with the enormous dark disk (secondary) inferred to cause the eclipses. Cepheid-like radial pulsations of the F star are not detected, nor do we find evidence for proposed 6% per decade shrinkage of the F star. The measured 2.27 ± 0.11 mas K-band diameter is consistent with a 300 solar radius F supergiant star at the Hipparcos distance of 625 pc. These results provide an improved context for observations during the 2009-2011 eclipse.
机译:我们报告了在2009年月食开始之前,使用帕洛玛试验台干涉仪为食双星εAurigae所获得的新的和存档的K波段干涉均匀圆盘直径。这些观测值旨在检验是否存在低振幅变化。系统与F超巨星(原星)相连,或与将恒星与巨大的暗盘相连的系统间物质(次生)联系起来,导致日蚀。没有检测到F星的造父变星状径向脉动,也没有发现提议的F星每十年收缩6%的证据。在625 pc的Hipparcos距离处测得的2.27±0.11 mas K波段直径与300个太阳半径F超巨型恒星一致。这些结果为2009-2011年日食期间的观测提供了更好的背景。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号