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BEGIN:VEVENT
DTSTART;TZID=Atlantic/Canary:20181203T123000
DTEND;TZID=Atlantic/Canary:20181203T133000
UID:iactalks-1223
X-WR-CALNAME: IAC Talks: Open Astronomy Seminars
X-ORIGINAL-URL: /iactalks/Talks/view/1223
CREATED:2018-12-03T12:30:00+00:00
X-WR-CALDESC: IAC Talks upcomming talks
SUMMARY: The formation of high mass young stellar objects and the importanc
 e of their massive protostellar jets
DESCRIPTION: The formation of high mass young stellar objects and the impor
 tance of their massive protostellar jets\nRubén Fedriani\n\nIn contrast w
 ith low-mass young stellar objects (LMYSOs), very little is  known about h
 igh-mass YSOs (HMYSOs). Latest results indicate that  HMYSOs might be born
  in a similar way as LMYSOs, i.e., through disc  accretion and jet ejectio
 n. HMYSOs are deeply embedded in their parent  cloud and are at kpc distan
 ce, hindering direct imaging of their  accretion discs. Jets then become e
 ssential to understand the physical  properties of the central source. Hig
 h-resolution near-IR VLT  instruments allow us to study HMYSO jets down to
  au scales and compare  them with the low-mass regime. In this talk, I wil
 l present VLT/ISAAC,  SINFONI, and CRIRES results on two HMYSOs. Spectro-a
 strometry is used to  retrieve information about the jet down to mas scale
 s (~tens of au at  kpc distance). High-resolution spectroscopy allows us t
 o retrieve the  kinematic and dynamic properties of the massive jets. Addi
 tionally, HST  imaging in the [FeII] shows the jet structure close to the 
 star.  Finally, these properties are compared with low-mass jets, suggesti
 ng  that the formation of HMYSOs might be a scaled-up version of their  lo
 w-mass counterparts, and their properties scale with mass.
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