Title page for ETD etd-0408103-220732


Type of Document Master's Thesis
Author Taylor, Kenneth Thomas
Author's Email Address ktthomas@earthlink.net
URN etd-0408103-220732
Title A Stellar Parameter Calibration of IUE Data for the Determination of the Present Day Mass Function of High Mass Stars
Degree Master of Science (M.S.)
Department Physics and Astronomy
Advisory Committee
Advisor Name Title
John S. Drilling Committee Chair
Arlo Landolt Committee Member
Juhan Frank Committee Member
Keywords
  • IMF
  • IUE
  • LMC
Date of Defense 2003-04-04
Availability unrestricted
Abstract
A study of stellar atmosphere models and the photometric quantity R is presented here, with R being the ratio of the integrated de-reddened fluxes from the two wavelength regions of the International Ultraviolet Explorer (IUE) satellite cameras. The effective temperatures and surface gravities of the stellar atmospheres were calibrated against R and absolute magnitude, using stellar evolution tracks from the literature, and applied to over 156 LMC stars whose masses and mass function are then derived from the results. The results show that the effective temperatures and surface gravities of stars derived from R and absolute magnitude correlate well with those found in the literature. The slope of the initial mass function (IMF) is Gamma = -2.31 for masses 85 Msun > M > 15 Msun. The correlation with R and apparent magnitude could prove useful in better determining the high mass portion of the IMF.
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