  We used the Wide Field Planetary Camera 2 aboard the Hubble Space Telescope
to search for globular clusters in the inner regions of the nearby giant
elliptical galaxy NGC 5128. This galaxy is believed to be the product of a
merger between a large elliptical galaxy and a small late-type spiral between
160 and 500 Myr ago. We identified 21 globular cluster candidates and measured
their core radii, tidal radii, half-mass radii, ellipticities, position angles,
and V-I colors. We find evidence that the NGC 5128 globular cluster candidates
are systematically more elliptical than are those of the Milky Way.
Approximately half of the candidates have (V-I)_0 colors that are consistent
with their being either old, unreddened globular clusters, similar to those
found in the Milky Way, or young, reddened globular clusters that may have
formed during the recent merger event. Most of the rest have colors that are
consistent with their being old globular clusters similar to those found in the
Milky Way. We find one blue object with (V-I)_0 < 0.26 +/- 0.09. The color,
reddening, and integrated magnitude of this object are consistent with its
being a small globular cluster with an age of approximately 100 Myr and a mass
(based on its integrated luminosity) of <= 4000 Solar masses. We find no
evidence for bimodality in the colors of the globular cluster candidates in our
sample beyond what can be explained by uncertainties in the differential
reddening.
