  Abundances of 22 elements have been determined from a high-resolution, high
signal-to-noise spectrum of HD19994, a star recently announced as harboring an
extrasolar planet. A detailed spectroscopic analysis of this stars finds it to
have a mass of 1.2+/-0.1Msun. HD19994 is found to be slightly enriched in
"metals" relative to the Sun 9[Fe/H]=+0.09+/-0.05 and an average of all metals
of [m/H]=+0.13), as are most stars known with extrasolar planets. In a search
for possible signatures of accretion of metal-rich gas onto the parent stars
(using HD19994 and published abundances for other stars), it is found that a
small subset of stars with planets exhibit a trend of increasing [X/H] with
increasing condensation temperature for a given element X. This trend may point
to the accretion of chemically fractionated solid material into the outer
(thin) convection zones of these solar-type stars. It is also found that this
small group of stars exhibiting an accretion signature all have large planets
orbiting much closer than is found, in general, for stars with planets not
showing this peculiar abundance trend, suggesting a physical link between
accretion and orbital separation. In addition, the stars showing evidence of
fractionated accretion are, on average, of larger mass (1.2Msun) than stars not
showing measurable evidence of accretion (1.0Msun).
