کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1775680 1021203 2006 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Planetesimal capture in the disk instability model
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات علوم فضا و نجوم
پیش نمایش صفحه اول مقاله
Planetesimal capture in the disk instability model
چکیده انگلیسی

We follow the contraction and evolution of a typical Jupiter-mass clump created by the disk instability mechanism, and compute the rate of planetesimal capture during this evolution. We show that such a clump has a slow contraction phase lasting ∼3×105 yr∼3×105 yr. By following the trajectories of planetesimals as they pass through the envelope of the protoplanet, we compute the cross-section for planetesimal capture at all stages of the protoplanet's evolution. We show that the protoplanet can capture a large fraction of the solid material in its feeding zone, which will lead to an enrichment of the protoplanet in heavy elements. The exact amount of this enrichment depends upon, but is not very sensitive to the size and random speed of the planetesimals.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Icarus - Volume 185, Issue 1, November 2006, Pages 64–71
نویسندگان
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