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BEGIN:VEVENT
DTSTART;TZID=Atlantic/Canary:20190716T123000
DTEND;TZID=Atlantic/Canary:20190716T133000
UID:iactalks-1304
X-WR-CALNAME: IAC Talks: Open Astronomy Seminars
X-ORIGINAL-URL: /iactalks/Talks/view/1304
CREATED:2019-07-16T12:30:00+01:00
X-WR-CALDESC: IAC Talks upcomming talks
SUMMARY:Massive Runaway and Walkaway Stars: Space Astrometry from Gaia and 
 Hubble
DESCRIPTION:Massive Runaway and Walkaway Stars: Space Astrometry from Gaia 
 and Hubble\nDr. Danny Lennon\n\nThe existence of apparently isolated massi
 ve stars has been recognized for some time, and various explanations have 
 been proposed to explain these ranging from isolated star formation to var
 iouscluster ejection mechanisms.  In this talk I will present recent resul
 ts from Gaia and Hubble on stellar dynamics within the Tarantula Nebula/30
  Doradus region of the Large Magellanic Cloud. I will discuss how these co
 mplementary datasets have improved our knowledge of this nearby mini-starb
 urst. The first results indicate the existence of a few stars in the regio
 n with masses ~100 solar masses that have been ejected from the central de
 nse cluster R136. Ejection velocities appear torange from a few 10s of km/
 s to ~100 km/s. Given the extreme youth of R136 it is therefore likely tha
 t the mechanism of ejection was via the dynamical interaction channel rath
 er than the binary supernova ejection scenario.
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