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Title:An interferometric study of molecular emission around ngc 7538 at millimeter wavelengths
Author(s):Pratap, Preethi
Director of Research:Snyder, Lewis E.
Department / Program:Astronomy
Degree Granting Institution:University of Illinois at Urbana-Champaign
Degree:Ph.D. (doctoral)
Subject(s):Maser action
Star formation
Interstellar medium
Millimeter interferometry
Abstract:A basic premise of this thesis is to use the techniques of millimeter interferometry to probe the high density regions around newly formed stars. The technique is invaluable since the spatial resolution of an interferometer allows the study of small scale density enhancements in the molecular cloud that could provide the conditions for maser excitation. In addition to the detailed density structure, the millimeter continuum observations provide a tool for modeling the H II region and for calculating parameter~ such as electron density, electron temperature, and emission measure, which are useful in determining the excitation mechanism for the maser emission.
Issue Date:1990-04
Publisher:Department of Astronomy. College of Liberal Arts and Sciences. University of Illinois at Urbana-Champaign.
Genre:Dissertation / Thesis
Date Available in IDEALS:2015-08-08

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