Low Perseus HI Surface Density Thresholds
By Elijah Bernstein-Cooper, March 3, 2015, 0 comments.

Below are results from using different $A_V$ maps. See yesterday’s post for how regions are chosen and comparison with Lee+12. Each $A_V$ map leads to similar DGRs, however the K+09 map yields a slightly larger HI width. This leads to $\Sigma_{HI}$ thresholds similar to Lee+12.

Planck:

Kainulain et al. (2009)

Lee et al. (2012) IRIS