Sub-Milliarcsecond Binary Star Astrometry

Xiaopei Pan, Michael Shao, M. Mark Colavita
1992 International Astronomical Union Colloquium  
AbstractLong–baseline optical interferometry has revolutionised binary star astronomy. This paper reviews some recent binary star work done using the Mark III Stellar Interferometer. For the first time, many spectroscopic binaries, eclipsing binaries, triple systems, and binaries with X-ray sources have had their visual orbit, diameter of the primary component, and color index determined. Also, accurate stellar masses, distances, radii, and effective temperatures have been derived. A
more » ... distance to the Hyades cluster has also been determined. In addition, preliminary observations provide evidence of a third body in the binary star systemζHer, which may resolve an 85-year old discrepancy in astronomy.
doi:10.1017/s0252921100007028 fatcat:atr5w3yffnbbxnm54rlf5lcrwm