ERRATUM: "Lyman α Radiative Transfer in Cosmological Simulations Using Adaptive Mesh Refinement" (2009, ApJ, 696, 853)

In the original paper, we provide a handy functional form for calculating the optimal value of x _crit, characterizing the size of the Gaussian core that can be skipped in the acceleration scheme of the radiative transfer, as a function of aτ₀ (Equation (17)). Two different sets of parameters are used for aτ₀ <= 60 and aτ₀>60, but in the manuscript, the inequality symbols "<=" and ">" have been misplaced by ">=" and "<," respectively. Thus, the correct sentence is:

"Indeed, it is found that the value where (ξ, χ) = (0.6, 1.2) or (1.4, 0.6) for aτ₀ <= 60 or aτ₀>60, respectively, can be used without affecting the emergent spectrum ..."

The error is only present in the text, and hence no results are affected.