Modeling Star-Forming Regions using a 3D Molecular Transport Code

Matthew Peter Redman

Modeling Star-Forming Regions using a 3D Molecular Transport Code

Physics

Research output: Chapter in Book or Conference Publication/Proceeding › Conference Publication › peer-review

Abstract

This paper presents the 3-dimensional non-LTE radiative transfer code, MOLLIE (MOLelcular Line Explorer), for solving molecular and atomic excitation and radiation transfer in a molecular gas and predicting emergent spectra. The code implementation makes use of the Accelerated Lambda Iteration (ALI) method of Rybicki Hummer (1991) to solve the radiative transfer equation along rays passing through a spherical model cloud. When convergence between level populations, the radiation field, and the point separation has been obtained, the grid is ray-traced to produce images that can be readily compared to observations. The optimization technique, Fast Simulated Annealing (FSA), adopted by MOLLIE to increase the probability of arriving at a satisfactory output in a timely fashion, is briefly considered.

Original language	English (Ireland)
Title of host publication	ADVANCES IN COMPUTATIONAL ASTROPHYSICS: METHODS, TOOLS AND OUTCOMES
Publisher	ASTRONOMICAL SOC PACIFIC
Volume	453
Publication status	Published - 1 Jan 2012

Authors (Note for portal: view the doc link for the full list of authors)

Authors
Loughnane, RM;Redman, MP;Keto, ER

Cite this

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title = "Modeling Star-Forming Regions using a 3D Molecular Transport Code",

abstract = "This paper presents the 3-dimensional non-LTE radiative transfer code, MOLLIE (MOLelcular Line Explorer), for solving molecular and atomic excitation and radiation transfer in a molecular gas and predicting emergent spectra. The code implementation makes use of the Accelerated Lambda Iteration (ALI) method of Rybicki Hummer (1991) to solve the radiative transfer equation along rays passing through a spherical model cloud. When convergence between level populations, the radiation field, and the point separation has been obtained, the grid is ray-traced to produce images that can be readily compared to observations. The optimization technique, Fast Simulated Annealing (FSA), adopted by MOLLIE to increase the probability of arriving at a satisfactory output in a timely fashion, is briefly considered.",

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N2 - This paper presents the 3-dimensional non-LTE radiative transfer code, MOLLIE (MOLelcular Line Explorer), for solving molecular and atomic excitation and radiation transfer in a molecular gas and predicting emergent spectra. The code implementation makes use of the Accelerated Lambda Iteration (ALI) method of Rybicki Hummer (1991) to solve the radiative transfer equation along rays passing through a spherical model cloud. When convergence between level populations, the radiation field, and the point separation has been obtained, the grid is ray-traced to produce images that can be readily compared to observations. The optimization technique, Fast Simulated Annealing (FSA), adopted by MOLLIE to increase the probability of arriving at a satisfactory output in a timely fashion, is briefly considered.

AB - This paper presents the 3-dimensional non-LTE radiative transfer code, MOLLIE (MOLelcular Line Explorer), for solving molecular and atomic excitation and radiation transfer in a molecular gas and predicting emergent spectra. The code implementation makes use of the Accelerated Lambda Iteration (ALI) method of Rybicki Hummer (1991) to solve the radiative transfer equation along rays passing through a spherical model cloud. When convergence between level populations, the radiation field, and the point separation has been obtained, the grid is ray-traced to produce images that can be readily compared to observations. The optimization technique, Fast Simulated Annealing (FSA), adopted by MOLLIE to increase the probability of arriving at a satisfactory output in a timely fashion, is briefly considered.

M3 - Conference Publication

VL - 453

BT - ADVANCES IN COMPUTATIONAL ASTROPHYSICS: METHODS, TOOLS AND OUTCOMES

PB - ASTRONOMICAL SOC PACIFIC

ER -

Modeling Star-Forming Regions using a 3D Molecular Transport Code

Abstract

Authors (Note for portal: view the doc link for the full list of authors)

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