Title:Investigating the Inner Gaseous Disk of Herbig Stars

Abstract:
The structure of the inner gaseous disk of Herbig stars, where dust is thought 
to evaporate due to high temperature, is poorly understood. Using non-LTE 
radiative transfer numerical models, BEDISK and BERAY, and observational data 
obtained using ESPaDOnS at CFHT which ranges from ~3700 to ~10,500 A, we are 
able to constrain the physical properties of this inner gaseous region. The 
synthetic line profiles of hydrogen and ionized metals, along with the observed 
line profiles, will help understand the geometry and kinematics of the gaseous 
disk.