Japan Geoscience Union Meeting 2016

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Symbol P (Space and Planetary Sciences) » P-PS Planetary Sciences

[P-PS15] New developments of planetary sciences with ALMA

Sun. May 22, 2016 3:30 PM - 5:00 PM A02 (APA HOTEL&RESORT TOKYO BAY MAKUHARI)

Convener:*Munetake Momose(The College of Science, Ibaraki University), Satoshi Okuzumi(Graduate School of Science, Tokyo Institute of Technology), Hiroshi Kobayashi(Department of Physics, Nagoya University), Hideo Sagawa(Faculty of Science, Kyoto Sangyo University), Tetsuo Hasegawa(National Astronomical Observatory of Japan, National Institutes of Natural Sciences), Chair:Satoshi Okuzumi(Graduate School of Science, Tokyo Institute of Technology)

3:30 PM - 3:45 PM

[PPS15-01] Review of observations of protoplanetary disks with ALMA

*Munetake Momose1 (1.The College of Science, Ibaraki University)

Keywords:Atacama Large Millimeter/Submillimeter Array (ALMA), Protoplanetary disks

The Atacama Large Millimeter/Submillimeter Array (ALMA) starated its science operation in 2011. Thanks to its high sensitivity and mapping capability, ALMA has revealed detailed structure of nearby protoplanetary disks, providing us with new informations about the formation of a planetary system in general. In particular, long-baseline campaign observations of HL Tau with ~3au resolution revealed ring-gap structure in the protoplanetary disk, demonstrating that ALMA will be a powerful tool for exploring disks around young stars. Possible origins of the ring-gap struture revealed in the disk associated with HL Tau will be presented in this talk. Observations of disks with deficient emission at near-infrared wavelengths (so called "transitional disks") will also be reviewed. It has been proven that these disks commonly show intriguing features, such as asymmetric distribution of emission and significant spatial variation of gas-to-dust mass ratio. I will discuss the importance of these features when one examines the generalized scenario for planet formation.