A multitransitional CO study of NGC7129

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dc.contributor.advisor Mitchell, George Ferguson, 1941-
dc.creator Miskolczi, Beverly
dc.date.accessioned 2011-05-09T12:31:20Z
dc.date.available 2011-05-09T12:31:20Z
dc.date.issued 1998
dc.identifier.other QB806 M57 1998
dc.identifier.uri http://library2.smu.ca/xmlui/handle/01/22044
dc.description vi, 172 leaves : ill. ; 28 cm.
dc.description Includes abstract.
dc.description Includes bibliographical references (leaves 116-119).
dc.description.abstract New observations of the molecular cloud NGC 7129, in several emission lines of CO, allows an assessment of the effects of recent and ongoing star formation. The CO data is supplemented with limited HCO[superscript +] J = 3 [right arrow] 2 data. The cloud contains a very young star cluster with associated reflection nebulae, surrounded by a sharply-bounded molecular cavity. The CO maps, which are the first high resolution maps covering a significant portion of NGC 7129, reveal much new structure in the molecular ridge, such as gas clumps, and direct evidence for compression of the ridge by the young stars along the eastern border of the cavity. Evidence is presented that supports the idea that triggered star formation has taken place in NGC 7129, and suggests that it is likely to continue. There is an energetic molecular outflow centred on or near the Be star LkH[alpha] 234, and a bipolar outflow to the south of this star which is associated with a far-infrared source. Additionally, there is high velocity blueshifted gas to the southwest of LkH[alpha] 234 and the molecular cavity. The new [superscript 12]CO J = 3 [right arrow] 2, [superscript 13]CO J = 3 [right arrow] 2, and [superscript 12]CO J = 2 [right arrow] 1 data permit a re-evaluation of the energetics and structure of the high velocity gas in the region. Optical depths, excitation temperatures, and column densities are calculated for each velocity channel at all positions in the redshifted outflow associated with LkH[alpha] 234. (Abstract shortened by UMI.)
dc.description.provenance Made available in DSpace on 2011-05-09T12:31:20Z (GMT). No. of bitstreams: 0 en
dc.language.iso en
dc.publisher Halifax, N.S. : Saint Mary's University
dc.subject.lcc QB806
dc.subject.lcsh Stars -- Formation
dc.subject.lcsh Molecular clouds
dc.title A multitransitional CO study of NGC7129
dc.type Text
thesis.degree.name Master of Science in Astronomy
thesis.degree.level Masters
thesis.degree.discipline Astronomy and Physics
thesis.degree.grantor Saint Mary's University (Halifax, N.S.)
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