Physics
Scientific paper
Oct 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982esasp.182...85d&link_type=abstract
In ESA Ultraviolet Stellar Classification p 85-89 (SEE N82-26119 16-89)
Physics
2
Classifications, Late Stars, Near Infrared Radiation, Stellar Spectra, Black Body Radiation, Carbon Stars, Cool Stars, Infrared Spectra, Infrared Spectroscopy, Light (Visible Radiation), Line Spectra, Reference Stars
Scientific paper
The advantages of the near IR for classifying late stars are described. In order to provide reference stars for far red observations of a reticon detector for low dispersion Cassegrain spectroscopy, 160 stars of spectral type O to M, luminosity types 1.3 and 5 were examined. Observations covered the wavelength range from 5800 to 10,200 A. The O region is relatively clean and free of major line blanketing effects. Quantitative classification by measuring relative line intensities, spectral gradients, or fitting black bodies is promising. Spectra of peculiar stars (WN5 and C8 type) are well defined, indicating the usefulness of carbon and helium spectra for classification, especially of cool stars.
Danks Anthony C.
Dennefeld Michel
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