用自适应光学对视双星进行精密天体测量。寻找系外行星的方法?
Precise Astrometry of Visual Binaries with Adaptive Optics. A Way for Finding Exoplanets?
摘要:
本文介绍了200英寸Hale(Mt. Palomar)和10米Keck II(Mauna Kea)望远镜,两者都带有自适应光学设施。在近红外波段观测到一组近距离可见双星和多次双星,测量了它们的相对间隔和位置角。还检验了某些系统效应(如大气折射、变化的板块尺度因子)对天体测量结果和精度的影响。我们的结论是,在目视双星天体测量观测,有可能达到更好的精度比1毫角秒,这在许多情况下允许检测的天体测量信号产生的行星质量的对象。
英文摘要:
We present the results of our study of astrometric stability of 200-in Hale (Mt. Palomar) and 10-m Keck II (Mauna Kea) telescopes, both with Adaptive Optics (AO) facilities. A group of nearby visual binaries and multiples was observed in near infrared, relative separations and position angles measured. We have also checked the influence of some systematic effects (e.g. atmospherical refraction, varying plate scale factor) on result and precision of astrometric measurements. We conclude that in visual binaries astrometrical observations it is possible to achieve much better precision than 1 miliarcsecond, which in many cases allows detection of the astrometrical signal produced by planetary-mass object.
机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。