Diagnostics Focus Session: Diagnostics of Disks Around Hot Stars

摘要

We discuss three different observational diagnostics related to disks around hot stars: absorption line determinations of rotational velocities of Be stars; polarization diagnostics of circumstellar disks; and X-ray line di-agnostics of one specific magnetized hot star, θ~1 Ori C. Some common themes that emerge from these studies include (a) the benefits of having a specific phys-ical model as a framework for interpreting diagnostic data; (b) the importance of combining several different types of observational diagnostics of the same objects; and (c) that while there is often the need to reinterpret traditional di-agnostics in light of new theoretical advances, there are many new and powerful diagnostics that are, or will soon be, available for the study of disks around hot stars.