文章基本信息

标题：Speckle Interferometry of Red Dwarf Stars
本地全文：下载
作者：Brian D. Mason ; William I. Hartkopf ; Korie N. Miles 等
期刊名称：The Astronomical journal
印刷版ISSN：0004-6256
电子版ISSN：1538-3881
出版年度：2018
卷号：155
期号：5
页码：1-14
DOI：10.3847/1538-3881/aab9b8
语种：English
出版社：American Institute of Physics
摘要：We report high-resolution optical speckle observations of 336 M dwarfs, which results in 113 measurements of the relative position of 80 systems and 256 other stars with no indications of duplicity. These are the first measurements for two of the systems. We also present the earliest measurements of relative position for 17 others. We include orbits for six of the systems, two revised and four reported for the first time. For one of the systems with a new orbit, G 161-7, we determine masses of 0.156±0.011 and 0.1175  0.0079 for the A and B components, respectively. All six of these new calculated orbits have short periods (between five and 38 years) and hold the promise of deriving accurate masses in the near future. For many other pairs we can establish their nature as physical or chance alignment, depending on their relative motion. Of the 80 systems, 32 have calculated orbits, 25 others are physical pairs, four are optical pairs, and 19 are currently unknown.
关键词：binaries: general;binaries: visual;stars: individual (G 161-7);techniques: interferometric