Can dust coagulation trigger streaming instability
Can dust coagulation trigger streaming instability
复制标题
粉尘凝结会引发流动不稳定吗
DOI:
10.1051/0004-6361/201424809
复制
发表时间:
2014
影响因子:
6.5
通讯作者:
C. Dullemond
中科院分区:
文献类型:
--
作者:
J. Dra̧żkowska;C. Dullemond
Context. Streaming instability can be a very e cient way of overcoming growth and drift barriers to planetesimal formation. However, it was shown that strong clumping, which leads to planetesimal formation, requires a considerable number of large grains. State-ofthe-art streaming instability models do not take into account realistic size distributions resulting from the collisional evolution of dust. Aims. We investigate whether a su cient quantity of large aggregates can be produced by sticking and what the interplay of dust coagulation and planetesimal formation is. Methods. We develop a semi-analytical prescription of planetesimal formation by streaming instability and implement it in our dust coagulation code based on the Monte Carlo algorithm with the representative particles approach. Results. We find that planetesimal formation by streaming instability may preferentially work outside the snow line, where sticky icy aggregates are present. The e ciency of the process depends strongly on local dust abundance and radial pressure gradient, and requires a super-solar metallicity. If planetesimal formation is possible, the dust coagulation and settling typically need 100 orbits to produce su ciently large and settled grains and planetesimal formation lasts another 1000 orbits. We present a simple analytical model that computes the amount of dust that can be turned into planetesimals given the parameters of the disk model.
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DOI:
10.1088/0004-637x/764/2/146
发表时间:
2012-08
期刊:
The Astrophysical Journal
影响因子:
--
作者:
P. Garaud;F. Meru;M. Galvagni;C. Olczak
通讯作者:
P. Garaud;F. Meru;M. Galvagni;C. Olczak
影响因子:
6.5
作者:
Seizinger
通讯作者:
Seizinger
DOI:
10.1088/2041-8205/774/1/l4
发表时间:
2013
期刊:
The Astrophysical Journal Letters
影响因子:
--
作者:
Galvagni;Olczak
通讯作者:
Olczak
DOI:
10.1088/0004-637x/783/2/111
发表时间:
2014
期刊:
The Astrophysical Journal
影响因子:
--
作者:
T. Kelling;G. Wurm;M. Köster
通讯作者:
M. Köster
影响因子:
3.2
作者:
V. Mannings;A. Boss;S. Russell
通讯作者:
V. Mannings;A. Boss;S. Russell