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Sub-Milliarcsecond Binary Star Astrometry1

Published online by Cambridge University Press:  12 April 2016

Xiaopei Pan ,
Michael Shao  and
M. Mark Colavita
Xiaopei Pan
Affiliation:
California Institute of Technology, Pasadena, CA 91125, USA
Michael Shao
Affiliation:
Jet Propulsion Laboratory, Pasadena, CA 91109, USA
M. Mark Colavita
Affiliation:
Jet Propulsion Laboratory, Pasadena, CA 91109, USA

Abstract

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Long–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 preliminary distance to the Hyades cluster has also been determined. In addition, preliminary observations provide evidence of a third body in the binary star system ζ Her, which may resolve an 85-year old discrepancy in astronomy.

Type
High Resolution At Visual Wavelengths
Information
International Astronomical Union Colloquium , Volume 135: Complementary Approaches to Double and Multiple Star Research , 1992 , pp. 502 - 509
Copyright
Copyright © Astronomical Society of the Pacific 1992

Footnotes

1

This contributed paper was judged outstanding by the Colloquium participants and is therefore included in the proceedings with the invited papers – eds

References

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