Extended and Filamentary Lyα Emission from the Formation of a Protogalactic Halo at z=2.63 ⋆ †

  title={Extended and Filamentary Ly$\alpha$ Emission from the Formation of a Protogalactic Halo at z=2.63 ⋆ †},
  author={Michael Rauch and George D. Becker and Martin G. Haehnelt and Jean-Ren'e Gauthier and Wallace L. W. Sargent},
  journal={Monthly Notices of the Royal Astronomical Society},
We report the observation of a further asymmetric, extended Lyα emitting halo at z = 2.63, from our ultra-deep, long-slit spectroscopic survey of faint high-redshift emitters, undertaken with Magellan LDSS3 in the GOODS-S field. The Lyα emission, detected over more than 30 kpc, is spatially coincident with a statistically significant concentration of galaxies visible in deep broad-band imaging. While these faint galaxies without spectroscopic redshifts cannot all with certainty be associated… 

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