Medium-resolution Spectroscopy of Red Giant Branch Stars in $\omega$ Centauri

Deokkeun An, Young Sun Lee, Jae In Jung +5

We present [Fe/H] and [Ca/Fe] of $\sim 600$ red giant branch (RGB) members of the globular cluster $\omega$ Centauri. We collect medium-resolution ($R\sim 2000$) spectra using the Blanco…