Probing the Dragonfish star-forming complex: the ionizing population of the young massive cluster Mercer 30

  title={Probing the Dragonfish star-forming complex: the ionizing population of the young massive cluster Mercer 30},
  author={Diego de la Fuente and Francisco Najarro and Jura Borissova and Sebasti'an Ram'irez Alegr'ia and Margaret Murray Hanson and Christine Trombley and Donald F. Figer and Ben Davies and M. Garcia and Radostin Kurtev and Miguel Alejandro Urbaneja and L. C. Smith and Philip W. Lucas and Artemio Herrero},
  journal={arXiv: Astrophysics of Galaxies},
The Dragonfish Nebula has been recently claimed to be powered by a superluminous but elusive OB association. Instead, systematic searches in near-infrared photometric surveys have found many other cluster candidates on this sky region. Among these, the first confirmed young massive cluster was Mercer 30, where Wolf-Rayet stars were found. We perform a new characterization of Mercer 30 with unprecedented accuracy, combining NICMOS/HST and VVV photometric data with multi-epoch ISAAC/VLT H- and K… 
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