Chemical abundances in the metal-intermediate GC NGC 6723
  We have performed a detailed spectral analysis of the inner halo Galactic
globular cluster (GC) NGC 6723 using high resolution (R$\approx$ 22000-48000)
spectra for for eleven red giant branch stars collected with MIKE (Magellan)
and FEROS (MPG/ESO). This globular is located at the minimum of the bimodal
metallicity distribution of GCs suggesting that it might be an excellent
transitional system between metal-intermediate and metal-rich GCs. In spite of
its metal-intermediate status, it is characterized by an extended horizontal
branch and by a large number of RR Lyrae stars. We investigated abundances of a
variety of species including light, $\alpha$-, Fe-peak, and neutron capture
elements. We found a mean metallicity $[Fe/H]=-0.93 \pm 0.05$ dex, and a
typical $\alpha$ -enrichment ($[\alpha/Fe] \approx 0.39$) that follows the
trend of metal-poor and metal-intermediate GCs. The same outcome applies for
light metals (Na, Al), Fe-peak (V, Cr, Mn, Fe, Co, Ni, Cu), $s$/$r$-process
elements (Ba, Eu) and for the classical anti-correlation: Na-O and Mg-Al. The
current findings further support the evidence that the chemical enrichment of
NGC 6723 is in more line with metal-intermediate GCs and their lower
metallicity counterparts, and it does not bring forward the prodrome of the
metal-rich regime.
