Computer Science
Scientific paper
Jan 1995
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995phdt........22b&link_type=abstract
Thesis (PH.D.)--UNIVERSITY OF COLORADO AT BOULDER, 1995.Source: Dissertation Abstracts International, Volume: 57-01, Section: B,
Computer Science
3
Spectral Indices
Scientific paper
Using multi-band spectra of 90 Carbon Wolf-Rayet (WC) stars, this Ph.D. thesis investigates the relationships between various emission line and continuum features of WC star winds and how these relationships compare with theoretical wind models. Numerous ultraviolet (UV) observations from the International Ultraviolet Explorer (IUE) archives have been combined with ground-based optical and near-infrared (NIR) data to give a spectral range for many WC stars spanning from 1200 to 10,200 A. The power-law distribution of Wolf -Rayet (W-R) continua are utilized to estimate line-of-sight interstellar reddening and spectral indices of WC stars. Relatively constant strengths of several emission lines in single early-type WC stars (WCE) are used to compute intrinsic line fluxes, absolute magnitudes and distances for Galactic WCE stars. These lines are also used to estimate magnitude differences in WCE+OB systems, and to compute absolute magnitudes and distances for these systems. Lastly, WCE emission line strengths are compared with values from published WCE wind structure models. The unfortunate result is that these models do not adequately predict line strengths for most emission features in WCE stars.
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