A 'super' star cluster grown old: the most massive star cluster in the Local Group

@article{Ma2006AS,
  title={A 'super' star cluster grown old: the most massive star cluster in the Local Group},
  author={J. Ma and Richard de Grijs and Y. Yang and X. Zhou and J. Chen and Z. J. Jiang and Z. Y. Wu and Jianghua Wu et al. National Astronomical Observatories and Chinese Academy of Sciences Department of PhysicsAstronomy and The University of Sheffield},
  journal={Monthly Notices of the Royal Astronomical Society},
  year={2006},
  volume={368},
  pages={1443-1450}
}
We independently redetermine the reddening and age of the globular cluster (GC) 037−B327 in M31 by comparing independently obtained multicolour photometry with theoretical stellar population synthesis models. 037−B327 has long been known to have a very large reddening value, which we confirm to be E(B − V ) = 1.360 ± 0.013, in good agreement with the previous results. We redetermine its most likely age at 12.4 ± 3.2 Gyr. 037−B327 is a prime example of an unusually bright early counterpart to… 

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