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| Paper: |
Limb-Darkening Observations and Binary-Star Images from the Navy Prototype Optical Interferometer |
| Volume: |
154, Cool Stars, Stellar Systems and the Sun: Tenth Cambridge Workshop |
| Page: |
1931 |
| Authors: |
Armstrong, J. T.; Mozurkewich, D.; Pauls, T. A.; Hajian, Arsen R.; Hummel, C. A. |
| Abstract: |
We briefly describe the Navy Prototype Optical Interferometer (NPOI) and some early angular-diameter and binary-star results. The NPOI has been operating with its first three elements since mid-1996 with baseline lengths of 19 m to 38 m and 32 spectral channels covering lambdalambda 850 - 450 nm, and has produced images at 3 milliarcsec resolution, the highest-resolution optical images to date. Ultimately, six array elements and baseline lengths from 2 m to 437 m will be available. We present limb-darkened angular diameters for alpha Cas, alpha Ari, and epsilon Gem, as well as images of the binary stars zeta^1 UMa, theta^2 Tau, phi Her, sigma Her, and pi^2 Cyg. The binary separations range from 6 mas (zeta^1 UMa) to 100 mas (pi^2 Cyg). |
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