Massive Star Formation in a Gravitationally Lensed H II Galaxy at z = 3.357* ** ***

  title={Massive Star Formation in a Gravitationally Lensed H II Galaxy at z = 3.357* ** ***},
  author={Robert A. E. Fosbury and Montse Villar-Martin and Marco Lombardi and Piero Rosati and Daniel Stern and R. N. Hook and Bradford Holden and S. A. Stanford and Gordon K. Squires and Michael Rauch and Wallace L. W. Sargent},
  journal={The Astrophysical Journal},
The Lynx arc, with a redshift of 3.357, was discovered during spectroscopic follow-up of the z ¼ 0:570 cluster RX J0848+4456 from the ROSAT Deep Cluster Survey. The arc is characterized by a very red RK color and strong, narrow emission lines. Analysis of HST WFPC2 imaging and Keck opticaland infrared spectroscopy shows that the arc is an H ii galaxy magnified by a factor of � 10 by a complex cluster environ- ment. The high intrinsic luminosity, the emission-line spectrum, the absorption… 
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