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SUMMARY:The impact of ice mantles on dust evolution in dynamically evolvin
 g protostellar discs
DTSTART;VALUE=DATE-TIME:20200514T113000Z
DTEND;VALUE=DATE-TIME:20200514T115000Z
DTSTAMP;VALUE=DATE-TIME:20240704T115619Z
UID:indico-contribution-26@meetings.aip.de
DESCRIPTION:Speakers: Tamara Molyarova (Institute of Astronomy\, Russian A
 cademy of Sciences)\nThe snowlines of various volatiles are often associat
 ed with dust evolution in protoplanetary discs and may be identified in ob
 servations due to their impact on dust properties. In the vicinity of snow
 lines icy mantles of dust grains sublimate\, which can lead to a different
  regime of dust growth. Dynamical effects of icy grains crossing snowlines
  may be reflected in the distribution of volatiles in the gas phase.\nIn t
 his work\, we present the FEOSAD model of protostellar disc with dust evol
 ution\, updated to include evolution of icy mantles. The chemical part of 
 the model accounts for time-dependent absorption and desorption of main di
 sc volatiles (H$_2$O\, CO$_2$\, CH$_4$\, and CO) on two evolving populatio
 ns of dust grains: small and grown dust. This 2D hydrodynamic code allows 
 to consider the feedback of ice mantles on dust evolution through variable
  fragmentation velocity. \nWe discuss if the dynamical effects when calcul
 ating the snowline positions are important for dust growth. We analyse the
  impact of ice mantles on dust evolution in protostellar discs and discuss
  the role of ices in the process of planet formation.\n\nhttps://meetings.
 aip.de/event/1/contributions/26/
LOCATION:Leibniz Institute for Astrophysics Potsdam (AIP) Lecture Hall
URL:https://meetings.aip.de/event/1/contributions/26/
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