Smalley, B. & Dworetsky, M.M., 1994, <I>Temperature and gravity
calibration of uvbyBeta photometry for B, A and F stars,</I> In: <I>IAU
XXIInd General Assembly 1994 Posters Abstracts,</I> ed. H. van Woerden,
Twin Press, p. 229.

<H3>Abstract</H3>

We re-evaluate the fundamental values of Teff determined by Code et al.
(1976) with modern flux measurements and Kurucz (1991) model atmospheres.
There are no significant changes.  We also use eclipsing binaries to
obtain fundamental values of log g.  Observed spectra of over 50 stars
are used to calibrate a grid of synthetic beta values.  The new values of
beta are in remarkably good agreement with observed values for the
fundamental stars.

<P>

These results are used to perform a completely new analysis of the
calibration of Teff and log g in terms of uvbyBeta photometry to produce
new grids similar to those presented by Moon & Dworetsky (1985).  The
improvements place the calibrations on a much firmer basis, but the
actual values of Teff and log g are not very much different.

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