Friday, February 20, 2009, 12:00 noon, Phillips Auditorium
The Missing Intracluster Medium in Globular Clusters
Dr. Pauline Barmby (Univ. W. Ontario)
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Mass loss is one of the most important and poorly-known parameters in
stellar evolution theory. Stars in globular clusters are known to lose
mass, but previous attempts to detect the lost mass as an intracluster
medium have been largely unsuccessful. We observed eight massive Galactic
globulars with Spitzer/MIPS and found no evidence for thermal emission
from interstellar dust similar results were recently obtained using data
from Akari. The implications of this missing intracluster medium will be
explored.
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