Differential reddening in 48 globular clusters: An end to the quest for the intracluster medium

Building on the Stetson photometry for 48 globular clusters (Stetson et al. 2019), we derived accurate differential reddening maps that can be used to correct any photometric catalog in those areas. We used the maps to estimate the amount of intracluster medium within each cluster and we found it to be in agreement with theoretical expectations. In the past, upper limits derived from non-detections of infrared emission were used to claim that the intracluster medium was orders of magnitude less abundant than expected. Our maps support recent discoveries about the spatial distribution which, together with new data on the dust chemical composition, show of the missing intracluster medium problem was indeed a false problem. 

https://ui.adsabs.harvard.edu/abs/2024A%26A...686A.283P/abstract