Navy Prototype Optical Interferometer Observations of the Double Stars Mizar A and Matar

Details Navy Prototype Optical Interferometer Observations of the Double Stars Mizar A and Matar Navy Prototype Optical Interferometer Observations of the Double Stars Mizar A and Matar

Nov 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998aj....116.2536h&link_type=abstract

The Astronomical Journal, Volume 116, Issue 5, pp. 2536-2548.

Astronomy and Astrophysics

Astronomy

67

Stars: Binaries: Spectroscopic, Techniques: Interferometric

Scientific paper

We present a detailed analysis of two spectroscopic binaries based on new observations obtained with the Navy Prototype Optical Interferometer (NPOI). While the data calibration needs refinement, first results show the impressive potential of NPOI, both in terms of speed and precision, for imaging and modeling the orbits of spectroscopic binaries. We determine the orbital parameters of Mizar A (zeta^1 Ursae Majoris) and Matar (eta Pegasi), and derive masses and luminosities using published radial velocities and Hipparcos trigonometric parallaxes. The results on Mizar A are compared to earlier work done with the Mark III interferometer, while data from this instrument were combined with NPOI data in the Matar analysis.

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