Extended Lyα Emission from Interacting Galaxies at High Redshifts

  title={Extended Ly$\alpha$ Emission from Interacting Galaxies at High Redshifts},
  author={Hidenobu Yajima and Yue-xing Li and Qirong Zhu},
  journal={The Astrophysical Journal},
Recent observations have discovered a population of extended Lyα sources, dubbed Lyα blobs (LABs), at high redshift z � 2 6.6. These LABs typically have a luminosity of L � 10 42 10 44 erg s −1 , and a size of tens of kiloparsecs, with some giant ones reaching up to D � 100 kpc. However, the origin of these LABs is not well understood. In this paper, we investigate a merger model for the formation of LABs by studying Lyα emission from interacting galaxies at high redshifts by means of a… 

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