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SUMMARY:What are the dynamical signatures of vortices?
DTSTART;VALUE=DATE-TIME:20200515T084500Z
DTEND;VALUE=DATE-TIME:20200515T090500Z
DTSTAMP;VALUE=DATE-TIME:20240704T115620Z
UID:indico-contribution-59@meetings.aip.de
DESCRIPTION:Speakers: Heloise Meheut (UCA/CNRS)\nThe large scale crescent 
 shape structures detected in protoplanetary disks have sometimes been inte
 rpreted as vortices. Vortices are of particular interest to understand pla
 net formation as they are known to concentrate dust and could participate 
 to planetesimal formation. We study the multiple fingerprints of such larg
 e Rossby vortices and propose observational predictions to test the if the
 se crescents could be interpreted as vortices.\n\nWe performed 2D hydro-si
 mulations where a vortex forms at the edge of a gas depleted region. We de
 rived idealized line-of-sight velocity maps\, varying orientation relative
  to the observer. The signal of interest\, as a small perturbation to the 
 dominant axisymetric component in velocity\, may be isolated in observatio
 nal data using a proxy for the dominant quasi-Keplerian velocity. We propo
 se that the velocity curve on the observational major axis be such a proxy
 . Applying our method to the disk around HD 142527 as a study case\, we pr
 edict line-of-sight velocities scarcely detectable by currently available 
 facilities. We show that corresponding spirals patterns can also be detect
 ed with similar spectral resolutions.\n\nhttps://meetings.aip.de/event/1/c
 ontributions/59/
LOCATION:Leibniz Institute for Astrophysics Potsdam (AIP) Lecture Hall
URL:https://meetings.aip.de/event/1/contributions/59/
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