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SUMMARY:Sublimating ices feeding forming planets - Alice Booth - Leiden
DTSTART:20220517T120000Z
DTEND:20220517T130000Z
UID:TALK172484@talks.cam.ac.uk
CONTACT:Dr Mathias Nowak
DESCRIPTION:New planetary systems are made from dust and gas in the rotati
 ng disks around young stars. High-resolution observations of these planet-
 forming disks with the Atacama Large Millimeter Array (ALMA) can be used t
 o learn about the planet-formation process. In particular\, ALMA can trace
  the composition of the gas available to be accreted by planets. In this t
 alk\, I will show recent molecular line observations towards two well-stud
 ied warm planet-forming disks: HD100546 and IRS48 and compare these to oth
 er disks including those in the ALMA large program MAPS.  The molecular em
 issions in HD100546 and IRS48 are strongly linked to disks dust structures
 . Our results include first detections of the molecules NO\, SO2 and CH3OC
 H3 in protoplanetary disks. The array of detected molecules can be used to
  learn about the physical and chemical conditions in the disk experienced 
 by forming planets. We determine the elemental C/O ratio in the disk using
  the simple molecules (SO\, CS etc)\, and this provides a direct connectio
 n to the observed exoplanet population. On the other hand\, the more compl
 ex molecules (CH3OH\, CH3OCH3\, etc.) shed light on the importance of inhe
 ritance from earlier stages of the star formation process. The detection o
 f these complex and potentially prebiotic molecules in planet-forming disk
 s provides links to how life originated in our solar system.\n
LOCATION:Ryle seminar room + ONLINE - Details to be sent by email
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