Discovery of a Faint Outer Halo Milky Way Star Cluster in the Southern Sky

Understand

We report the discovery of a new, low luminosity star cluster in the outer halo of the Milky Way.

• High quality $gr$ photometry is presented, from which a color-magnitude diagram is constructed, and estimates of age, [Fe/H], [$\alpha$/Fe], and distance are derived.
• The star cluster, which we designate as Kim 2, lies at a heliocentric distance of $\sim105$ kpc.
• With a half-light radius of $\sim12.8$ pc and ellipticity of $\epsilon\sim0.12$, it shares the properties of outer halo GCs, except for the higher metallicity ([Fe/H]$\sim-1.0$) and lower luminosity ($M_{V}\sim-1.5)$.