A newly discovered young massive star cluster at the far end of the Galactic Bar

  title={A newly discovered young massive star cluster at the far end of the Galactic Bar},
  author={B. Davies and D. D. L. Fuente and F. Najarro and J. Hinton and C. Trombley and D. Figer and E. Puga},
  journal={Monthly Notices of the Royal Astronomical Society},
We present a near-infrared study of the candidate star cluster Mercer 81, located at the centre of the G338.4+0.1 H ii region and close to the TeV gamma-ray source HESS 1640–465. Using Hubble Space Telescope/NICMOS imaging and VLT/ISAAC spectroscopy, we have detected a compact and highly reddened cluster of stars, although the bright stars in the centre of the field are in fact foreground objects. The cluster contains nine stars with strong Pα emission, one of which we identify as a Wolf–Rayet… Expand
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