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BEGIN:VEVENT
DTSTART;TZID=Atlantic/Canary:20190228T103000
DTEND;TZID=Atlantic/Canary:20190228T113000
UID:iactalks-1260
X-WR-CALNAME: IAC Talks: Open Astronomy Seminars
X-ORIGINAL-URL: /iactalks/Talks/view/1260
CREATED:2019-02-28T10:30:00+00:00
X-WR-CALDESC: IAC Talks upcomming talks
SUMMARY:The Structured Outflows of Massive Stars: A  Tale of Theory and Obs
 ervation
DESCRIPTION:The Structured Outflows of Massive Stars: A  Tale of Theory and
  Observation\nProf. Alex Fullerton\n\nThe growth of astrophysical understa
 nding typically results fromthe constructive interplay between theoretical
  ideas andobservational insights, with each mode of exploration drivingpro
 gress at different times. The result is invariably a morecomplicated but r
 icher picture of the phenomenon than initiallyenvisaged, as well as deeper
  appreciation of the behavior ofcomplex systems.In this talk, I will use t
 he development of our understanding ofthe structure of outflows from massi
 ve O- and B-type stars toillustrate this collaborative “dance”
 . Starting from the smooth,spherically symmetric models for radiatively dr
 iven windsdeveloped in the late 1960s, our view of these outflows hasevolv
 ed to include the growth of inhomogeneities on a variety ofspatial scales.
  Explanations for the origin of this structure havein turn prompted the re
 alization that non-radiative processesmust also shape the emergence of the
  wind from the stellarphotosphere. Consequently, O- and B-type stars are m
 orecomplicated – and interesting! – objects than often thought
 .While many fruitful avenues of research remain to be explored,the current
  paradigm provides a (mostly) self-consistent pictureof massive stars and 
 their outflows.
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