Using another IGM attenuation model than default

[YuichiHarikane]

Hi,

Is there any way to change the IGM attenuation model from the default one (Madau 1995) to the latest one (e.g., Inoue et al. 2014)? I'm asking this because it seems that the best photometric redshift from prospector is systematically lower than spectroscopic ones at high redshift (z>4.5, see the attached plot). I'm wondering if this systematic offset disappears if I use Inoue's IGM attenuation model.

Thank you in advance,

Yuichi

[bd-j]

The current IGM attenuation model is implemented within FSPS, so it would have to be changed there, or a new IGM attenuation functionality added to prospector. Have you tried scaling the IGM absorption curve with the "igm_factor" parameter?