Infrared analysis of a Mira-type variable, Omicron Ceti

dc.contributor.advisorKovar, Natalie S.
dc.contributor.committeeMemberCoon, Julian B.
dc.contributor.committeeMemberKing, Elbert A., Jr.
dc.creatorDawson, Robin Alan Jeffery
dc.date.accessioned2022-01-26T19:00:23Z
dc.date.available2022-01-26T19:00:23Z
dc.date.issued1972
dc.description.abstractThe physical properties of a class of late spectral type giant stars, called Mira-type variables, and the use of infrared Fourier spectroscopy in their analysis are reviewed in this paper. The one micron and two micron regions of the infrared spectrum of Omicron Ceti (o Get) , the prototype of this class of stars, is examined for spectral classification and for the determination of the principle molecular constituents in a Mira-type stellar atmosphere. As a result, an effective temperature, T[lowered e] = 1960 ± 100°K corresponding to a spectral classification of M 8.0e and a phase 0.48 was derived. Oxide bands of titanium and vanadium in the one micron region and of carbon and silicon in the two micron region were found. An estimate of the stellar water vapor content based on an examination of the visible portion of the spectrum yields a value of 5.0 X 10[raised 21] molecules/cm[raised 2] for o Get at this temperature and phase. A comparison of the present results to those expected for an M 8 giant atmosphere agree with Spinrad and Vardya's (1966) suggestion that an oxygen to carbon ratio close to unity for Mira-type stellar atmospheres is preferred.
dc.description.departmentPhysics, Department of
dc.format.digitalOriginreformatted digital
dc.format.mimetypeapplication/pdf
dc.identifier.other13684027
dc.identifier.urihttps://hdl.handle.net/10657/8617
dc.language.isoen
dc.rightsThis item is protected by copyright but is made available here under a claim of fair use (17 U.S.C. §107) for non-profit research and educational purposes. Users of this work assume the responsibility for determining copyright status prior to reusing, publishing, or reproducing this item for purposes other than what is allowed by fair use or other copyright exemptions. Any reuse of this item in excess of fair use or other copyright exemptions requires express permission of the copyright holder.
dc.titleInfrared analysis of a Mira-type variable, Omicron Ceti
dc.type.dcmiText
dc.type.genreThesis
thesis.degree.collegeCollege of Arts and Sciences
thesis.degree.departmentPhysics, Department of
thesis.degree.disciplinePhysics
thesis.degree.grantorUniversity of Houston
thesis.degree.levelMasters
thesis.degree.nameMaster of Science

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