Water Maser Proper Motions Near Evolved Stars (Abstract)

Volume 29 number 1 (2001)

Kevin B. Marvel

American Astronomical Society, Executive Office 2000 Florida Avenue, N. W. Suite 400 Washington, DC 20009

Abstract

(Abstract only) A summary is presented of recent observations obtained using very long baseline interferometry of water masers near evolved stars. We find that that masers do not have simple kinetic motions such as radial outflow at constant velocity. Recent results from infrared speckle imaging hint at very clumpy mass loss, which could lead to confused kinematics in the water maser region.