Japan Geoscience Union Meeting 2016

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International Session (Oral)

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

[P-CG10] Small Solar System Bodies: General and Mars Satellite Sample Return Mission

Mon. May 23, 2016 9:00 AM - 10:30 AM 104 (1F)

Convener:*Taishi Nakamoto(Tokyo Institute of Technology), Kiyoshi Kuramoto(Department of Cosmosciences, Graduate School of Sciences, Hokkaido University), Sei-ichiro WATANABE(Division of Earth and Planetary Sciences, Graduate School of Science, Nagoya University), MASATERU ISHIGURO(Department of Physics and Astronomy, Seoul National University), Masahiko Arakawa(Graduate School of Science, Kobe University), Masanao Abe(Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency), Tomoko Arai(Planetary Exploration Research Center, Chiba Institute of Technology), Sho Sasaki(Department of Earth and Space Sciences, School of Science, Osaka University), Chair:Masahiko Arakawa(Graduate School of Science, Kobe University)

9:45 AM - 10:00 AM

[PCG10-15] Dynamical evolution of dust particles: from comets to the inner solar system

*Hongu Yang1, MASATERU ISHIGURO1 (1.Department of Physics and Astronomy Seoul National University ROK)

Keywords:interplanetary dust particles, comets, zodiacal cloud, numerical simulation

There have been a long-standing debate regarding origins of interplanetary dust particles. Recent research about the optical properties and spatial distribution of zodiacal light suggested that ~ 90% of interplanetary dust particles which comprise the zodiacal light would be originated from comets. In this work, we started from different point of view. We studied the final status of dust cloud made by the dust particles ejected from comets. We chose representative comets which cover a wide variety of cometary orbital distribution. Hypothetical dust particles with different sizes were ejected from selected actual comets, following a dust ejection model based on cometary observations. We performed a numerical integration of dust orbits involving photon drag from solar radiation and perturbations from planetary gravitation. In this presentation, we will introduce our results about final positions of the cometary dust particles, and compare it with the observed quantities of interplanetary dust particles in the inner solar system, that is, the mass budget, size-frequency distribution, orbital elements distribution and zodiacal light brightness distribution.