kok, Yitping; Ireland, Michael; Rizzuto, A C; Tuthill, Peter G; Robertson, James G; Warrington, Benjamin A; Tango, W J
The conventional approach to high-precision narrow-angle astrometry using a long baseline interferometer is to directly measure the fringe packet separation of a target and a nearby reference star. This is done by means of a technique known as phase-referencing which requires a network of dual beam combiners and laser metrology systems. Using an alternative approach that does not rely on phase-referencing, the narrow-angle astrometry of several closed binary stars (with separation less than...[Show more]
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