MODELING OF THE INITIAL MASS FUNCTION USING THE METROPOLIS-HASTINGS ALGORITHM

A stochastic model has been developed for the hierarchical fragmentation of a molecular cloud. Here, the number of fragments, time between successive fragmentation steps, and mass of a fragment are considered as random variables, and fragment masses are generated using the Metropolis-Hastings algori...

Full description

Saved in:
Bibliographic Details
Published in:The Astrophysical journal 2011-08, Vol.736 (2), p.152-jQuery1323905727895='48'
Main Authors: CHATTOPADHYAY, Tanuka, ASIS KUMAR CHATTOPADHYAY, SINHA, Abisa
Format: Article
Language:English
Subjects:
ALGORITHMS
Astronomy
ASTROPHYSICS, COSMOLOGY AND ASTRONOMY
CLOUDS
CRITICAL MASS
DISTANCE
Earth, ocean, space
Exact sciences and technology
FRAGMENTATION
FUNCTIONS
GALAXIES
LUMINOSITY
MASS
MASS SPECTRA
MATHEMATICAL LOGIC
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
SEGREGATION
SIMULATION
SPECTRA
STOCHASTIC PROCESSES
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A stochastic model has been developed for the hierarchical fragmentation of a molecular cloud. Here, the number of fragments, time between successive fragmentation steps, and mass of a fragment are considered as random variables, and fragment masses are generated using the Metropolis-Hastings algorithm. The resulting mass spectra, computed at different projected distances and taking opacity into consideration, show a signature of mass segregation. The critical mass, mass spectrum, and mass segregation are consistent with the observations of young massive clusters in our Galaxy as well as in external galaxies.
ISSN:0004-637X
1538-4357
DOI:10.1088/0004-637X/736/2/152