Japan Geoscience Union Meeting 2021

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[E] Oral

M (Multidisciplinary and Interdisciplinary) » M-IS Intersection

[M-IS02] Astrobiology

Thu. Jun 3, 2021 1:45 PM - 3:15 PM Ch.26 (Zoom Room 26)

convener:Hikaru Yabuta(Hiroshima University, Department of Earth and Planetary Systems Science), Seiji Sugita(Department of Earth and Planetary Science, Graduate School of Science Sciece, The University of Tokyo), Misato Fukagawa(National Astronomical Observatory of Japan), Fujishima Kosuke(Tokyo Institute of Technology, Earth-Life Science Institute), Chairperson:Fujishima Kosuke(Tokyo Institute of Technology, Earth-Life Science Institute), Misato Fukagawa(National Astronomical Observatory of Japan), Seiji Sugita(Department of Earth and Planetary Science, Graduate School of Science Sciece, The University of Tokyo), Hikaru Yabuta(Hiroshima University, Department of Earth and Planetary Systems Science)

2:10 PM - 2:35 PM

[MIS02-02] Astrochemistry and molecular composition in protoplanetary disks

★Invited Papers

*Shota Notsu1 (1.Star and Planet Formation Laboratory, RIKEN Cluster for Pioneering Research)

Keywords:astrochemistry, ALMA, protoplanetary disks, snowline, molecules, organic molecules

Planets form and obtain their compositions in protoplanetary disks around young stars. The chemical compositions of gas and solid dust grains in these planet-forming disks will decide planetary compositions including water and organic molecules, which relate planet's habitability. Chemical structures in protoplanetary disks are determined by a combination of in situ chemical reactions and inheritance from molecular clouds and protostellar envelopes. In addition, positions of "snowlines" always influence planet formation, since they determine the elemental content of solids and gas at different locations in protoplanetary disks.
Recently, in addition to updates in theoretical studies, astronomical observations with ALMA (Atacama Large Millimeter/submillimeter Array) have investigated the spatial distributions of volatiles (C/N/O) and detected organic molecules in protoplanetary disks. In this review talk, we introduce some research topics (mainly ALMA observations) about astrochemistry and molecular composition in protoplanetary disks, and also discuss future prospects in this field and connections with planetary systems.