Astrometric Interferometry
arXiv:1812.02926 · doi:10.1142/9446
Abstract
Astrometry is a powerful technique in astrophysics to measure three-dimensional positions of stars and other astrophysical objects, including exoplanets and the gravitational influence they have on each other. Interferometric astrometry is presented here as just one in a suite of powerful astrometric techniques, which include space-based, seeing-limited and wide-angle adaptive optics techniques. Fundamental limits are discussed, demonstrating that even ground-based techniques have the capability for astrometry at the single micro-arcsecond level, should sufficiently sophisticated instrumentation be constructed for both the current generation of single telescopes and long-baseline optical interferometers.
28 pages, 10 figures. Chapter to appear in 2019 in The WSPC Handbook of Astronomical Instrumentation, Volume 3, UV, Optical & IR Instrumentation: Part 2. Edited by David N. Burrows
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