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dc.contributor.advisorRieke, George H.en_US
dc.contributor.authorKirby, Diana Jill, 1959-
dc.creatorKirby, Diana Jill, 1959-en_US
dc.date.accessioned2013-05-16T09:24:26Z
dc.date.available2013-05-16T09:24:26Z
dc.date.issued1991en_US
dc.identifier.urihttp://hdl.handle.net/10150/291418
dc.description.abstractBeam profiles from the Infrared Astronomical Satellite (IRAS) at 60 and 100μm and for both hot and cold sources are analyzed using Fourier techniques to check the efficiency of the short wavelength blockage in the 60 and 100μm filters. Comparison of these power spectra with the expected passbands and an estimate of the noise supports the hypothesis that the 100μm filters have a short wavelength leak of 14.3 ± 3.6%, but that there is no detectable leak in the 60μm filters. Following decrement of the 100μm flux by 14.3%, stellar atmosphere models are anchored at 12μm to the IRAS flux measurements for 33 chosen stars and predicted flux measurements at 25, 60 and 100μm are computed. Comparison of these predictions with those measured by IRAS shows that the IRAS measurements are overestimated at 25 and 60μm and underestimated at 100μm with regard to atmospheric models.
dc.language.isoen_USen_US
dc.publisherThe University of Arizona.en_US
dc.rightsCopyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.en_US
dc.subjectPhysics, Astronomy and Astrophysics.en_US
dc.titleRe-calibration of IRAS flux measurements at 25, 60 and 100 μm using stellar atmosphere modelsen_US
dc.typetexten_US
dc.typeThesis-Reproduction (electronic)en_US
thesis.degree.grantorUniversity of Arizonaen_US
thesis.degree.levelmastersen_US
dc.identifier.proquest1345372en_US
thesis.degree.disciplineGraduate Collegeen_US
thesis.degree.disciplineAstronomyen_US
thesis.degree.nameM.S.en_US
dc.identifier.bibrecord.b27003206en_US
refterms.dateFOA2018-08-18T16:49:37Z
html.description.abstractBeam profiles from the Infrared Astronomical Satellite (IRAS) at 60 and 100μm and for both hot and cold sources are analyzed using Fourier techniques to check the efficiency of the short wavelength blockage in the 60 and 100μm filters. Comparison of these power spectra with the expected passbands and an estimate of the noise supports the hypothesis that the 100μm filters have a short wavelength leak of 14.3 ± 3.6%, but that there is no detectable leak in the 60μm filters. Following decrement of the 100μm flux by 14.3%, stellar atmosphere models are anchored at 12μm to the IRAS flux measurements for 33 chosen stars and predicted flux measurements at 25, 60 and 100μm are computed. Comparison of these predictions with those measured by IRAS shows that the IRAS measurements are overestimated at 25 and 60μm and underestimated at 100μm with regard to atmospheric models.


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