论文标题
2021年Soar的斑点干涉法
Speckle Interferometry at SOAR in 2021
论文作者
论文摘要
在2008年开始的4.1 m南部天体物理研究望远镜（SOAR）的斑点干涉计划（SOAR）始于2008年，目前积累了30,300多个个人观察结果，这些观察结果为12,700个不同的目标。它的主要目标是监视近距离二进制文件的轨道运动，其中包括高阶层次结构和太阳能社区中低质量矮人的成员。 2021年的结果在此发布，总计2,623个测量结果为2,123个解决方案，非分辨率为763个目标。测量分离的中位数为0.21英寸，75对比30 mas更接近。尺度和方向的校准基于103对具有良好模型运动的103对的观察结果。将这些校准器与最新的GAIA数据释放与最新的GAIA数据释放，以及与典型的MAS相对级别，导致这些级别的相对位置，这些级别的相对位置是典型的，或者是这些级别的误差。在这里确定282个二进制文件（54个首次确定和228个校正）。
The speckle interferometry program at the the 4.1 m Southern Astrophysical Research Telescope (SOAR), started in 2008, now accumulated over 30,300 individual observations of 12,700 distinct targets. Its main goal is to monitor orbital motion of close binaries, including members of high-order hierarchies and low-mass dwarfs in the solar neighborhood. The results from 2021 are published here, totaling 2,623 measurements of 2,123 resolved pairs and non-resolutions of 763 targets. The median measured separation is 0.21", and 75 pairs were closer than 30 mas. The calibration of scale and orientation is based on the observations of 103 wide pairs with well-modeled motion. These calibrators are compared to the latest Gaia data release, and minor (0.5%) systematic errors were rectified, resulting in accurate relative positions with typical errors on the order of 1 mas. Using these new measurements, orbits of 282 binaries are determined here (54 first determinations and 228 corrections). We resolved for the first time 50 new pairs, including subsystems in known binaries. A list of 94 likely spurious pairs unresolved at SOAR (mostly close Hipparcos binaries) is also given.
