High Contrast Imaging with Spitzer: Constraining the Frequency of Giant Planets out to 1000 AU Separations
Stephen Durkan et al 2016 ApJ 824 58
Re-analysis of archival Spitzer IRAC surveys indicate that the frequency of 0.5–13 Jupiter-mass planets at separations of 10–1000 AU is less than 9% in the study sample.