JpGU-AGU Joint Meeting 2020

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[J] Oral

P (Space and Planetary Sciences ) » P-CG Complex & General

[P-CG26] New Developments of Planetary Sciences with ALMA

convener:Tetsuo Hasegawa(National Astronomical Observatory of Japan, National Institutes of Natural Sciences), Takayuki Muto(Division of Liberal Arts, Kogakuin University), Takahiro IINO(Information Technology Center, the University of Tokyo), Masumi Shimojo(National Astronomical Observatory of Japan)

The Atacama Large Millimeter/Submillimeter Array (ALMA) started its science operation in 2011, and long-baseline observations have been available since 2014. With its high sensitivity and spatial resolution, ALMA has provided us with transformational information on star and planet formation and our Solar System bodies. For example, in the observations of protoplanetary disks, ring-like structures have been commonly found and the structures with the scale of several-AU are discovered in several systems. In our solar system, scientific achievements which utilizing high capability of ALMA such as detections of new molecules on Titan and Pluto and derivation of 3-D structure of the gas giants with continuum observation have been reported. As of Cycle 4, Solar observations have become available, enabling us, for example, to determine the physical parameters of plasmoid quantitatively. In this session, we overview the latest results of ALMA observations in the broad field of planetary sciences. We also accept theoretical and experimental works that are closely related to the observations and discuss the impact on the planetary science community.

[PCG26-02] High-resolution multiband imaging for investigating the radial variation of the spectral index in the protoplanetary disk around TW Hya

★Invited Papers

*Takashi Tsukagoshi1, Takayuki Muto2, Hideko Nomura1, Ryohei Kawabe1, Kazuhiro Kanagawa4, Satoshi Okuzumi3, Shigeru Ida3, Catherine Walsh5, Tom J Millar6, Sanemichi Takahashi1, Jun Hashimoto7, Taichi Uyama8, Motohide Tamura4 (1.National Astronomical Observatory of Japan, 2.Kogakuin University, 3.Tokyo Institute of Technology, 4.University of Tokyo, 5.University of Leeds, 6.Queen's University Belfast, 7.Astrobiology Center, 8.California Institute of Technology)

[PCG26-04] The Detection of Dust Gap-ring Structure in the Outer Region of the CR Cha Protoplanetary Disk

*Seongjoong Kim1, Takayuki Muto2, Hideko Nomura3,1, Sanemichi Takahashi3,4, Takashi Tsukagoshi3, Seokho Lee3, Ruobing Dong5, Yasuhiro Hasegawa6, Jun Hashimoto7, Kazuhiro Kanagawa8, Akimasa Kataoka3, Mihoko Konishi9, Hauyu Baobab Liu10, Munetake Momose11, Sitko Michael12, Kengo Tomida13 (1.Department of Earth and Planetary Sciences, Tokyo Institute of Technology, 2. Division of Liberal Arts, Kogakuin University, 1-24-2 Nishi-Shinjuku, Shinjuku-ku, Tokyo 163-8677, Japan, 3. National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan, 4.Department of Applied Physics, Kogakuin University, 1-24-2 Nishi-Shinjuku, Shinjuku-ku, Tokyo, 163-8677, Japan, 5.Department of Physics & Astronomy, University of Victoria, Victoria, BC V8P 1A1, Canada, 6. Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA, 7.Astrobiology Center, National Institutes of Natural Sciences, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan, 8.Research Center for the Early Universe, Graduate School of Science, University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan, 9.Faculty of Science and Technology, Oita University, 700 Dannoharu, Oita 870-1192, Japan, 10.Academia Sinica Institute of Astronomy and Astrophysics, P.O. Box 23-141, Taipei 10617, Taiwan, 11. College of Science, Ibaraki University, 2-1-1 Bunkyo, Mito, Ibaraki 310-8512, Japan, 12.Department of Physics, University of Cincinnati, Cincinnati, OH 45221, USA, 13.Department of Earth and Space Science, Osaka University, Toyonaka, Osaka 560-0043, Japan)