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Record Details

Record 36 of 1275
Axisymmetric model of the ionized gas in the Orion Nebula
External Online Source: doi:10.1086/170145
Author and Affiliation:
Rubin, R. H.(NASA Ames Research Center, Moffett Field, CA, United States)
Simpson, J. P.(NASA Ames Research Center, Moffett Field, CA, United States)
Haas, M. R.(NASA Ames Research Center, Moffett Field, CA, United States)
Erickson, E. F.(NASA Ames Research Center, Moffett Field, CA, United States)
Abstract: New ionization and thermal equilibrium models for the ionized gas in the Orion Nebula with an axisymmetric two-dimensional 'blister' geometry/density distribution are presented. The HII region is represented more realistically than in previous models, while the physical detail of the microphysics and radiative transfer of the earlier spherical modeling is maintained. The predicted surface brightnesses are compared with observations for a large set of lines at different positions to determine the best-fitting physical parameters. The model explains the strong singly ionized line emission along the lines of sight near the Trapezium.
Publication Date: Jun 20, 1991
Document ID:
19910056269
(Acquired Nov 28, 1995)
Accession Number: 91A40892
Subject Category: ASTROPHYSICS
Document Type: Journal Article
Publication Information: Astrophysical Journal, Part 1 (ISSN 0004-637X); 374; 564-579
Publisher Information: United States
Contract/Grant/Task Num: NAS2-13218; NCA2-373; NCC2-548
Financial Sponsor: NASA; United States
Organization Source: NASA Ames Research Center; Moffett Field, CA, United States
Description: 16p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: ABUNDANCE; ASTRONOMICAL MODELS; IONIZED GASES; ORION NEBULA; DENSITY DISTRIBUTION; EMISSION SPECTRA; LINE SPECTRA; THERMODYNAMIC EQUILIBRIUM
Imprint And Other Notes: Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 374, June 20, 1991, p. 564-579.
Availability Source: Other Sources
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