PARAMETER STUDY OF CLASSICAL Be STAR DISK MODELS CONSTRAINED BY OPTICAL INTERFEROMETRY

We have computed theoretical models of circumstellar disks for the classical Be stars kappa Dra, beta Psc, and upsilon Cyg. Models were constructed using a non-LTE radiative transfer code developed by Sigut & Jones (2007), which incorporates a number of improvements over previous treatments of the disk thermal structure, including a realistic chemical composition. Our models are constrained by direct comparison with long-baseline optical interferometric observations of the H alpha-emitting regions and by contemporaneous H alpha line profiles. Detailed comparisons of our predictions with H alpha interferometry and spectroscopy place very tight constraints on the density distributions for these circumstellar disks.