Determine the age of Minni 07

Determine whether the confirmed candidate globular cluster Minni 07 is approximately 10 or 14 Gyr old using more precise photometric or spectroscopic data.

Background

The authors compared multiband color-magnitude diagrams for Minni 07 with PARSEC isochrones while fixing the metallicity, extinction, and distance. The comparison ruled out an age as young as 2 Gyr and suggested that the cluster is older than 6 Gyr.

The available photometry and isochrone comparisons were insufficient to distinguish between the older tested ages, leaving the precise age of Minni 07 unresolved.

References

We can therefore rule out an age as young as 2 Gyr and conclude that Minni 07 is probably older than 6 Gyr, but the current data are not precise enough to define whether it is 10 or 14 Gyr old.

— Globular cluster candidates uncovered by VVVX and MUSE  (2609.26659 - Cuevas et al., 22 Sep 2026) in Section 5, Summary and conclusions