2012MNRAS.423..889D


C.D.S. - SIMBAD4 rel 1.7 - 2021.04.18CEST11:55:25

2012MNRAS.423..889D - Mon. Not. R. Astron. Soc., 423, 889-899 (2012/June-2)

Clump mass function at an early stage of molecular cloud evolution – I. A statistical approach.

DONKOV S., VELTCHEV T.V. and KLESSEN R.S.

Abstract (from CDS):

We derive the mass function of condensations (clumps) which were formed through a turbulent cascade over a range of spatial scales L ≤ 20 pc during early, predominantly turbulent evolution of a molecular cloud. The approach rests upon the assumption of a statistical clump mass-density relationship nmx with a scale dependence of the exponent x obtained from equipartition relations between various forms of energy of clumps. The derived clump mass function (ClMF) could be represented by series of two or three power laws, depending on the chosen equipartition relation, the velocity scaling index and the type of turbulent forcing. The high-mass ClMF exhibits an average slope Γ ≃ -1, typical for fractal clouds, whereas its intermediate-mass part is shallower or flattened, in agreement with some observational studies.

Abstract Copyright: 2012 The Authors Monthly Notices of the Royal Astronomical Society2012 RAS

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

Simbad objects: 8

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Number of rows : 8

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 NAME Perseus Cloud SFR 03 35.0 +31 13           ~ 1131 0
2 NGC 1499 HII 04 03 18 +36 25.3           ~ 156 0
3 NAME California Molecular Cloud MoC 04 10.0 +39 00           ~ 108 1
4 NAME Taurus Complex SFR 04 41.0 +25 52           ~ 3680 0
5 NAME Ori B MoC 05 41 43.0 -01 54 44           ~ 1217 0
6 NAME the Pipe Nebula DNe 17 30 -25.0           ~ 351 1
7 SH 2-140 OpC 22 19 07.8 +63 17 07           ~ 636 2
8 IRAS 22176+6303 Y*O 22 19 17.978 +63 18 52.92           ~ 590 0

    Equat.    Gal    SGal    Ecl

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2021.04.18-11:55:25

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