Astronomy and Astrophysics – Astrophysics
Scientific paper
Nov 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987apj...322l..41k&link_type=abstract
Astrophysical Journal, Part 2 - Letters to the Editor (ISSN 0004-637X), vol. 322, Nov. 1, 1987, p. L41-L44. NSERC-DOE-supported
Astronomy and Astrophysics
Astrophysics
13
Abundance, Eclipsing Binary Stars, Magellanic Clouds, Metallicity, Stellar Atmospheres, Wolf-Rayet Stars, Line Spectra, Milky Way Galaxy, Radio Spectra, Stellar Interiors, Stellar Spectrophotometry, Ultraviolet Spectra
Scientific paper
Phase-dependent variations in the IUE spectra of the SMC 19.6-day eclipsing binary system HD 5980 (WN4 + 07I) are discussed. The effects of selective atmospheric eclipses in the N, C, and He lines of HD 5980 are found to be similar to those observed in its Galactic counterpart, while the variations in the 1350-1490 A continuum region are virtually undetectable. It is suggested that this observation is a consequence of the lower initial abundance, particularly of the heavier elements in the SMC with respect to the Galaxy, combined with subsequent nuclear processing in the WR star interior.
Auer Lawrence H.
Koenigsberger Gloria
Moffat Anthony F. J.
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