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SUMMARY:Doppler flips and wiggles in long baseline observations of protopl
 anetary disks with ALMA
DTSTART;VALUE=DATE-TIME:20200514T072500Z
DTEND;VALUE=DATE-TIME:20200514T074500Z
DTSTAMP;VALUE=DATE-TIME:20240704T115618Z
UID:indico-contribution-55@meetings.aip.de
DESCRIPTION:Speakers: Sebastián Pérez (Universidad de Santiago de Chile)
 \nProtoplanets and circumplanetary disks are elusive yet they are cornerst
 ones to the most popular interpretations for observed protoplanetary disk 
 structures. The gaseous velocity field also bears the imprint of planet–
 disk interactions\, with non-Keplerian fine structure in the molecular-lin
 e channel maps (e.g.\, wiggles or kinks). Such features could in principle
  be connected to the perturber by comparison with hydrodynamical simulatio
 ns\, however\, there is a more direct way of pinpointing the protoplanet
 ’s location: identifying the place where the non-Keplerian velocities un
 dergo an abrupt sign reversal\, a.k.a. a "Doppler flip"\, in velocity cent
 roid maps. In this talk\, I will discuss the kinematic signatures of plane
 t formation and present recent observations of the young disk in HD 100546
  in CO emission and dust continuum. The high-resolution 1.3 mm continuum o
 bservation reveals fine radial and azimuthal substructures in the form of 
 a complex maze of ridges and trenches sculpting a dust ring. Near these du
 st structures\, we pick up a conspicuous Doppler flip. The 12CO channel ma
 ps are modulated by wiggles that deviate from Keplerian kinematics and whi
 ch are somewhat connected to the Doppler flip signal.\n\nhttps://meetings.
 aip.de/event/1/contributions/55/
LOCATION:Leibniz Institute for Astrophysics Potsdam (AIP) Lecture Hall
URL:https://meetings.aip.de/event/1/contributions/55/
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