C.D.S. - SIMBAD4 rel 1.7 - 2021.04.19CEST15:46:15

2017MNRAS.466..914D - Mon. Not. R. Astron. Soc., 466, 914-920 (2017/March-3)

Statistical link between the structure of molecular clouds and their density distribution.


Abstract (from CDS):

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.

Abstract Copyright: © 2016 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): methods: statistical - ISM: clouds - ISM: structure - ISM: structure

Simbad objects: 5

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Number of rows : 5

N Identifier Otype ICRS (J2000)
ICRS (J2000)
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
1 NAME Perseus Cloud SFR 03 35.0 +31 13           ~ 1131 0
2 NAME California Molecular Cloud MoC 04 10.0 +39 00           ~ 108 1
3 NAME Ori A MoC 05 38 -07.1           ~ 2757 0
4 NAME Lupus I Cld 15 43 02.1 -34 09 06           ~ 238 0
5 NAME the Pipe Nebula DNe 17 30 -25.0           ~ 351 1

    Equat.    Gal    SGal    Ecl

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