  We measure chemical abundance ratios and radial velocities in four massive
(i.e., young) [alpha/Fe]-rich red giant stars using high-resolution high-S/N
spectra from ESPaDOnS fed by Gemini-GRACES. Our differential analysis ensures
that our chemical abundances are on the same scale as the Alves-Brito et al.
(2010) study of bulge, thin and thick disk red giants. We confirm that the
program stars have enhanced [alpha/Fe] ratios and are slightly metal poor.
Aside from lithium enrichment in one object, the program stars exhibit no
chemical abundance anomalies when compared to giant stars of similar
metallicity throughout the Galaxy. This includes the elements Li, O, Si, Ca,
Ti, Cr, Ni, Cu, Ba, La, and Eu. Therefore, there are no obvious chemical
signatures that can help to reveal the origin of these unusual stars. While our
new observations show that only one star (not the Li-rich object) exhibits a
radial velocity variation, simulations indicate that we cannot exclude the
possibility that all four could be binaries. In addition, we find that two
(possibly three) stars show evidence for an infrared excess, indicative of a
debris disk. This is consistent with these young [alpha/Fe]-rich stars being
evolved blue stragglers, suggesting their apparent young age is a consequence
of a merger or mass transfer. We would expect a binary fraction of ~50% or
greater for the entire sample of these stars, but the signs of the circumbinary
disk may have been lost since these features can have short timescales. Radial
velocity monitoring is needed to confirm the blue straggler origin.
