A high resolution M band study of W3 IRS5

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dc.contributor.advisor Mitchell, George Ferguson, 1941-
dc.creator Belcourt, Kenneth Noel
dc.date.accessioned 2011-05-09T12:31:18Z
dc.date.available 2011-05-09T12:31:18Z
dc.date.issued 1989
dc.identifier.other QB883 B46 1989
dc.identifier.uri http://library2.smu.ca/xmlui/handle/01/22032
dc.description vi, 111 leaves : ill ; 28 cm.
dc.description Includes bibliographical references (leaves 78-81).
dc.description.abstract This thesis presents an infrared spectral analysis of the high mass protostar W3 IRS5. A high resolution M band spectrum of W3 IRS5 was obtained from the CFHT with the Fourier Transform Spectrometer. The spectrum was measured using a Fortran program developed by the author. Four gas phase absorption components were detected in [superscript 12]CO with outflow velocities up to 38 km s[superscript-1]. Analysis of this absorption indicates gas temperatures up to 400 K with a temperature gradient possibly present. Source velocity [superscript 13]CO absorption which was also detected, demonstrates that two separate gas clouds are present along the line of sight to W3 IRS. Warm, neutral [superscript 13]CO gas has a temperature of 50 K whereas 300 AU from W3 IRS5, hot, 470 K gas is detected. Absorption due to solid phase [superscript 12]CO is interpreted as originating in the warm, neutral gas some distance from the source. A rotationally supported accretion disk, which reprocesses starlight, may explain the hot gas close to the source.
dc.language.iso en
dc.publisher Halifax, N.S. : Saint Mary's University
dc.subject.lcc QB883
dc.subject.lcsh Protostars -- Spectra -- Measurement
dc.title A high resolution M band study of W3 IRS5
dc.type Text
thesis.degree.name Master of Science in Astronomy
thesis.degree.level Masters
thesis.degree.discipline Astronomy
thesis.degree.grantor Saint Mary's University (Halifax, N.S.)


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