Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985apjs...57..133d&link_type=abstract
Astrophysical Journal Supplement Series (ISSN 0067-0049), vol. 57, Jan. 1985, p. 133-143.
Astronomy and Astrophysics
Astronomy
43
O Stars, Stellar Spectra, Ultraviolet Astronomy, Iue, Line Spectra, Spectrum Analysis
Scientific paper
Archival high dispersion UV spectra obtained by the IUE satellite, together with laboratory data for the Fe peak ions, reveal more than 550 identifiable spectral features in the far-UV region in the cases of the O subdwarfs BD +75 deg 325 and BD +28 deg 4211, as well as the sharp lined main sequence star HD 46202. The wide range of effective temperatures of the selected stars makes this spectral line identification list suitable for use with all stars of spectral type O. The most numerous of the features identified are those of the lines attributed to iron atoms, with each of the spectra studied exhibiting three levels of ionization that range from Fe III to Fe V for the coolest O star, HD 46202, and Fe IV through Fe VI for the hottest O star, BD +28 4211.
Bruhweiler Fred C.
Dean Charles A.
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