...stars

Based on observations at the McDonald Observatory.

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...IRAF

IRAF is distributed by National Optical Astronomy Observatories, operated by the Association of Universities for Research in Astronomy, Inc., under contract with the National Science Foundation, U.S.A.

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...here)

With the release of the Hipparcos parallaxes this can now be addressed in greater detail and for most of our stars. The results will be published elsewhere.

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