Mathematics – Logic
Scientific paper
Oct 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982esasp.182....1c&link_type=abstract
In ESA Ultraviolet Stellar Classification p 1-7 (SEE N82-26119 16-89)
Mathematics
Logic
Astronomical Catalogs, Classifications, Stellar Spectra, Td-1 Satellite, Ultraviolet Radiation, Astronomical Maps, F Stars, Morphological Indexes, Stellar Luminosity, Stellar Temperature
Scientific paper
An atlas of UV stellar spectra, with a morphological classification system, for wavelengths from 1350 to 2740 A is described and the classification procedure is outlined. The atlas is in three parts: spectra in order of advancing spectral type; extreme classes in order to illustrate the luminosity effect; and peculiar spectra. For classification, stars are first visually divided into B or A-F type. The B stars are then divided into seven homogeneous spectral groups (each divided into three subgroups) and A-F stars into four homogeneous groups by applying ultraviolet plus either temperature or luminosity criteria. The classification correlates well with photometric and spectroscopic values.
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