Evidence for PopIII-like Stellar Populations in the Most Luminous Lyman-α Emitters at the Epoch of Reionization: Spectroscopic Confirmation

@article{Sobral2015EvidenceFP,
  title={Evidence for PopIII-like Stellar Populations in the Most Luminous Lyman-$\alpha$ Emitters at the Epoch of Reionization: Spectroscopic Confirmation},
  author={David Sobral and Jorryt Matthee and Behnam Darvish and Daniel Schaerer and Bahram Mobasher and H. J. A. Rottgering and Sergio Dos Santos and Shoubaneh Hemmati},
  journal={The Astrophysical Journal},
  year={2015},
  volume={808},
  pages={139}
}
Faint Lyman-$\alpha$ (Ly$\alpha$) emitters become increasingly rarer towards the re-ionisation epoch (z~6-7). However, observations from a very large (~5deg$^2$) Ly$\alpha$ survey at z=6.6 (Matthee et al. 2015) show that this is not the case for the most luminous emitters. Here we present follow-up observations of the two most luminous z~6.6 Ly$\alpha$ candidates in the COSMOS field: `MASOSA' and `CR7'. We used X-SHOOTER, SINFONI and FORS2 (VLT), and DEIMOS (Keck), to confirm both candidates… 

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