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VERSION:2.0
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BEGIN:VEVENT
DTSTART;TZID=Atlantic/Canary:20091203T000000
DTEND;TZID=Atlantic/Canary:20091203T010000
UID:iactalks-20
X-WR-CALNAME: IAC Talks: Open Astronomy Seminars
X-ORIGINAL-URL: /iactalks/Talks/view/20
CREATED:2009-12-03T00:00:00+00:00
X-WR-CALDESC: IAC Talks upcomming talks
SUMMARY:Triggered star formation on the borders of H II regions
DESCRIPTION:Triggered star formation on the borders of H II regions\nDr. Fa
 brice Martins\n\nThe formation of massive stars is not fully understood. T
 he high luminosity and temperature of massive protostars complicate the ac
 cretion mechanism at work in intermediate and low mass young stellar objec
 ts. Nonetheless, several scenarios exist to explain the formation of massi
 ve stars. In this talk, we will focus on the process of triggered star for
 mation on the borders of H II regions. Due to the feedback effects of OB s
 tars, a layer of molecular material is collected during the expansion of t
 he H II region. Instabilities develop in this layer and give birth to new 
 stars. We will present a detailed study of three Galactic H II regions (RC
 W79, RCW82 and RCW120). Near-infrared integral field observations have bee
 n carried out with SINFONI on the VLT. We will see how they reveal the nat
 ure of both the ionizing stars and of the YSOs in the collected layer and 
 how they support the scenario of 'triggered star formation'.
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