Searching for chemical signatures of planet formation

Ch. Rab, G.A. Muro-Arena, I. Kamp, C. Dominik, L.B.F.M. Waters, W-F. Thi, P. Woitke

Research output: Chapter in Book/Report/Conference proceedingConference contribution


High spatial resolution observations with ALMA and VLT/SPHERE show gaps and rings in continuum emission of protoplanetary disks, possibly indicating ongoing planet formation. However, it is still unclear if the gas follows the dust distribution. We present radiation thermo-chemical models for the disk of HD 163296 to study the impact of dust and gas gaps on the chemistry and molecular line emission. We compare a model with only dust gaps to a model that also has gas gaps. In both models, rings and gaps are visible in (sub)mm molecular line emission. Due to chemistry, certain molecules are sensitive to dust gaps where others are more sensitive to gas depletion. Observations of multiple molecules might allow to accurately determine the degree of gas depletion within the dust gaps, information crucial to discriminate between gap formation theories (e.g. planets, ice lines).
Original languageEnglish
Title of host publicationOrigins
Subtitle of host publicationFrom the Protosun to the First Steps of Life
EditorsBruce G. Elmgreen, L. Viktor Tóth, Manuel Güdel
PublisherInternational Astronomical Union (IAU)
Number of pages3
Publication statusPublished - 13 Jan 2020
EventIAU Symposium 345 - Vienna, Austria
Duration: 20 Aug 201823 Aug 2018
Conference number: 345

Publication series

NameProceedings of the International Astronomical Union
PublisherCambridge University Press
ISSN (Print)1743-9213


ConferenceIAU Symposium 345
Internet address


  • Stars: pre–main-sequence
  • (Stars:) planetary systems: protoplanetary disks
  • Astrochemistry
  • Radiative transfer
  • Methods: numerical


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