Subaru telescope observations of Deep Impact.
نویسندگان
چکیده
The impact cratering process on a comet is controversial but holds the key for interpreting observations of the Deep Impact collision with comet 9P/Tempel 1. Mid-infrared data from the Cooled Mid-Infrared Camera and Spectrometer (COMICS) of the Subaru Telescope indicate that the large-scale dust plume ejected by the impact contained a large mass (approximately 10(6) kilograms) of dust and formed two wings approximately +/-45 degrees from the symmetric center, both consistent with gravity as the primary control on the impact and its immediate aftermath. The dust distribution in the inner part of the plume, however, is inconsistent with a pure gravity control and implies that evaporation and expansion of volatiles accelerated dust.
منابع مشابه
A High-resolution Mid-ir Observation of the Collision between Deep Impact Projectile
PROJECTILE AND COMET 9P/TEMPEL 1. S. Sugita, T, Kadono, T. Ootsubo, M. Honda, S. Sako, T. Miyata, I. Sakon, T. Yamashita, H. Kawakita, H. Fujiwara, T. Fujiyoshi, N. Takato, T. Fuse, and SUBARU/COMICS Deep Impact Observation Team, Dept. of Complexity Sci. and Eng., Univ. of Tokyo, Kashiwa, Chiba 277-8561, JAPAN ([email protected]). Div. of Particle and Astrophys. Sci., Nagoya Univ., ISAS, J...
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عنوان ژورنال:
- Science
دوره 310 5746 شماره
صفحات -
تاریخ انتشار 2005