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VERSION:2.0
CALSCALE:GREGORIAN
PRODID:UW-Madison-Physics-Events
BEGIN:VEVENT
SEQUENCE:1
UID:UW-Physics-Event-5104
DTSTART:20190430T170000Z
DTEND:20190430T181500Z
DTSTAMP:20240319T084556Z
LAST-MODIFIED:20190426T191952Z
LOCATION:4421 Sterling Hall\, Noon Talk
SUMMARY:An introduction to radiatively driven stellar winds \, Noon Co
lloquium\, Wolf-Rainer Hamann\, Institute for Physics and Astronomy\,
University of Potsdam
DESCRIPTION:Stellar spectra that are dominated by bright and broad emi
ssion lines have been discovered by the French astronomers Wolf and Ra
yet 150 years ago\, and must be attributed to strong outflow of matter
. But only with the advent of ultraviolet spectroscopy in the 1970s it
became known that stellar winds are ubiquitous among hot and luminous
stars.
\n
\nIn principle\, such winds can be driven by radia
tion pressure. The
\nquantitative analysis of stellar-wind spectra req
uires adequate
\nmodeling of expanding stellar atmospheres.
\n
\nThe
evolution of massive stars and their final fate depends on their mass
loss. This refers especially to the mass that might finally collapse
into a Black Hole - i.e. such objects which are observed by gravitatio
nal waves when merging.
URL:https://www.physics.wisc.edu/events/?id=5104
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