• There is a
variety of line profile morphologies seen in Chandra observations of massive stars, indicating that a surprising variety of high-energy physical
processes are occurring
in early-type stars
•Supergiants with massive radiation-driven winds
have X-ray emitting
plasma distributed throughout their winds: Standard wind-shock models explain the data if the
mean optical depth of
the cool wind component is several times lower than expected (mass-loss rates
overestimated? clumping?)
•Young O and early B stars are well explained by
the hybrid magnetically
channeled wind shock model
•Any time instrumentation improves significantly,
surprising discoveries will
be made