We investigated the properties of 80 Be star disks, using the time dependent viscous decretion disk (VDD) model to interpret their mid-infrared continuum fluxes. Besides estimating the typical parameter ranges for such disks, this approach allowed us to relate the disk structure to its evolutionary status. In this contribution, we present a brief summary of the recently published results, and discuss some properties and time-scales of the VDD model solution.
@article{arxiv.1707.03105,
title = {The viscous disk properties of 80 Be stars},
author = {Rodrigo G. Vieira and Alex C. Carciofi},
journal= {arXiv preprint arXiv:1707.03105},
year = {2017}
}