Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993nasrp1312.....r&link_type=abstract
Unknown
Astronomy and Astrophysics
Astronomy
B Stars, Dwarf Stars, Iue, Photosphere, Spectrum Analysis, Stellar Rotation, Stellar Spectra, Stellar Winds, Subgiant Stars, Ultraviolet Astronomy, Astronomical Spectroscopy, Classifications
Scientific paper
New criteria for the spectral classification of B stars in the ultraviolet show that photospheric absorption lines in the 1200-1900A wavelength region can be used to classify the spectra of B-type dwarfs, subgiants, and giants on a 2-D system consistent with the optical MK system. This atlas illustrates a large number of such spectra at the scale used for classification. These spectra provide a dense matrix of standard stars, and also show the effects of rapid stellar rotation and stellar winds on the spectra and their classification. The observational material consists of high-dispersion spectra from the International Ultraviolet Explorer archives, resampled to a resolution of 0.25 A, uniformly normalized, and plotted at 10 A/cm. The atlas should be useful for the classification of other IUE high-dispersion spectra, especially for stars that have not been observed in the optical.
Rountree Janet
Sonneborn George
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