Statistical link between the structure of molecular clouds and their density distribution
Statistical link between the structure of molecular clouds and their density distribution
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分子云结构与其密度分布之间的统计联系
DOI:
10.1093/mnras/stw3147
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发表时间:
2017
影响因子:
4.8
通讯作者:
Klessen
中科院分区:
文献类型:
--
作者:
Donkov;Veltchev;Klessen
We introduce the concept of a class of equivalence of molecular clouds represented by an abstract spherically symmetric, isotropic object. This object is described by use of abstract scales in respect to a given mass-density distribution. Mass and average density are ascribed to each scale and thus are linked to the density distribution: a power-law type and an arbitrary continuous one. In the latter case, we derive a differential relationship between the mean density at a given scale and the structure parameter that defines the mass-density relationship. The two-dimensional (2D) projection of the cloud along the line of sight is also investigated. Scaling relations of mass and mean density are derived in the considered cases of power-law and arbitrary continuous distributions. We obtain relations between scaling exponents in the 2D and 3D cases. The proposed classes of equivalence are representative for the general structure of real clouds with various types of column-density distributions: power law, lognormal or combination of both.
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DOI:
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发表时间:
2008
期刊:
影响因子:
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作者:
B. Elmegreen
通讯作者:
B. Elmegreen
DOI:
--
发表时间:
2010
期刊:
影响因子:
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作者:
S. Donkov;T. Veltchev;R. Klessen
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R. Klessen
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2015
期刊:
影响因子:
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作者:
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H. Beuther
影响因子:
6.5
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通讯作者:
Federrath
DOI:
--
发表时间:
2013
期刊:
影响因子:
--
作者:
T. Veltchev;S. Donkov;R. Klessen
通讯作者:
R. Klessen