We report the complete photometric results from our Herschel study which is the first comprehensive program to search for far-infrared emission from cold dust around young brown dwarfs .
We surveyed 50 fields containing 51 known or suspected brown dwarfs and very low mass stars that have evidence of circumstellar disks based on Spitzer photometry and/or spectroscopy .
The objects with known spectral types range from M3 to M9.5 .
Four of the candidates were subsequently identified as extragalactic objects .
Of the remaining 47 we have successfully detected 36 at 70µm and 14 at 160µm with S/N greater than 3 , as well as several additional possible detections with low S/N .
The objects exhibit a range of [ 24 ] – [ 70 ] micron colors suggesting a range in mass and/or structure of the outer disk .
We present modeling of the spectral energy distributions of the sample and discuss trends visible in the data .
Using two Monte Carlo radiative transfer codes we investigate disk masses and geometry .
We find a very wide range in modeled total disk masses from less than 10 ^ { -6 } M _ { \odot } up to 10 ^ { -3 } M _ { \odot } with a median disk mass of order 3 \times 10 ^ { -5 } M _ { \odot } , suggesting that the median ratio of disk mass to central object mass may be lower than for T Tauri stars .
The disk scale heights and flaring angles , however , cover a range consistent with those seen around T Tauri stars .
The host clouds in which the young brown dwarfs and low-mass stars are located span a range in estimated age from \sim 1–3 Myr to \sim 10 Myr and represent a variety of star-forming environments .
No obvious dependence on cloud location or age is seen in the disk properties , though the statistical significance of this conclusion is not strong .