: 01 ( 07 . 03 . 1 ; 07 . 16 . 2 ) Astronomy and Astrophysics 9 . 1 . 1995
نویسندگان
چکیده
The long-lived spots caused by the impact of fragments of Comet S-L 9 on Jupiter can be understood if clouds of dust are produced by the impact. These clouds reside in the stratosphere, where they absorb visible light that would ordinarily re ect from the cloud deck below, and re ect radiation at infrared wavelengths that would ordinarily be absorbed by atmospheric methane. Here we show that, provided that the nucleus of a fragment is composed substantially of silicates and has a diameter greater than about 0.4 km, dust in the required amounts will condense from the hot gas composed of cometary and Jovian material ejected from the site where the fragment entered, and the dust will be suspended in the stratosphere for long periods. Particles about 1 m in radius can explain both the optical properties and longevities of the spots. According to our model, a silicate band should be present in the 10 m spectra of the spots.
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تاریخ انتشار 2008