We describe the search for Lyman break galaxies (LBGs) near the submillimeter-bright starburst galaxy HFLS3 at z = 6.34 and a study on the environment of this massive galaxy during the end of reionization. We performed two independent selections of LBGs on images obtained with the Gran Telescopio Canarias (GTC) and the Hubble Space Telescope (HST)

Context. The majority of all galaxies reside in groups of fewer than 50 member galaxies. These groups are distributed in various large-scale environments from voids to superclusters. Aims: The evolution of galaxies is affected by the environment in which they reside. Our aim is to study the effects of the local group scale and the supercluster

The observations we reported in ATel #2166 were actually of nova M31 2009-08b, not 2009-08d. Therefore, ATel #2166 confirms the nova nature of nova M31 2009-08b, located 965" east and 1962" north of the center of M31. See http://www.cfa.harvard.edu/iau/CBAT_M31.html#2009-08b

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