Spectroscopic study of the globular clusters in M31

We have performed a new systematic globular cluster (GC) survey of M31 for ∼ 3° × 3° area centered on M31. Using photometric data obtained from observations using the KPNO 0.9-m telescope + Washington CMT 1 filters, and spectroscopic data obtained from observations using the KPNO/WIYN 3.5-m telescope + Hydra multifiber spectrograph, we have confirmed 544 previously known GCs and found over 600 new GCs and candidates, of which more than one hundred are believed to be genuine GCs. We present the metallicity distribution of the previously known and new GCs in M31, which is better fit with three components than with two components.