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Article
Neon Abundances from a Spitzer/IRS Survey of Wolf-Rayet Stars.
The Astrophysical Journal
(2007)
Abstract
We report on neon abundances derived from Spitzer high resolution spectral data of eight Wolf-Rayet (WR) stars using the forbidden line of [Ne III] 15.56 μm. Our targets include four WN stars of subtypes 4–7, and four WC stars of subtypes 4–7. We derive ion fraction abundances γ of Ne2+ for the winds of each star. The ion fraction abundance is a product of the ionization fraction Qi in stage i and the abundance by number AE of element E relative to all nuclei. Values generally consistent with solar are obtained for the WN stars, and values in excess of solar are obtained for the WC stars.
Keywords
- Neon Abundances,
- Spitzer/IRS Survey,
- Wolf-Rayet Stars
Disciplines
Publication Date
November 1, 2007
Citation Information
Richard Ignace, J. P. Cassinelli, G. Tracy, E. Churchwell, et al.. "Neon Abundances from a Spitzer/IRS Survey of Wolf-Rayet Stars." The Astrophysical Journal Vol. 669 (2007) ISSN: 2041-8205 Available at: http://works.bepress.com/richard_ignace/48/