  Transitional disks are protoplanetary disks with opacity gaps/cavities in
their dust distribution, a feature that may be linked to planet formation. We
perform Bayesian modeling of the three transitional disks SZ Cha, CS Cha and
T25 including photometry from the Herschel Space Observatory to quantify the
improvements added by these new data. We find disk dust masses between 2x10^-5
and 4x10^-4 Msun, and gap radii in the range of 7-18 AU, with uncertainties of
~ one order of magnitude and ~ 4 AU, respectively. Our results show that adding
Herschel data can significantly improve these estimates with respect to
mid-infrared data alone, which have roughly twice as large uncertainties on
both disk mass and gap radius. We also find weak evidence for different density
profiles with respect to full disks. These results open exciting new
possibilities to study the distribution of disk masses for large samples of
disks.
