HST FGS天体测量-弧精度的分数毫秒值
HST FGS astrometry - the value of fractional millisecond of arc precision
摘要:
在几年内,哈勃太空望远镜和精密制导传感器的古老组合将被SIM,GAIA和长基线干涉测量所取代。在此之前,我们仍然是亚毫秒弧精密光学天体测量的首选资源。作为例子,我们讨论了1)我们的银河造父变星的星群的用途,和2)确定几个系外行星宿主恒星的摄动轨道根数,产生真正的伴星质量。
英文摘要:
In a few years astrometry with the venerable combination of Hubble Space Telescope and Fine Guidance Sensor will be replaced by SIM, GAIA, and long-baseline interferometry. Until then we remain a resource of choice for sub-millisecond of arc precision optical astrometry. As examples we discuss 1) the uses which can be made of our parallaxes of galactic Cepheids, and 2) the determination of perturbation orbital elements for several exoplanet host stars, yielding true companion masses.
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。