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Analysis of UV spectrophotometric observations for O-type stars.

Published online by Cambridge University Press:  14 August 2015

Carlo Morossi ,
Roberto Stalio  and
Lucio Crivellari
Carlo Morossi
Affiliation:
Astronomical Observatory of Trieste
Roberto Stalio
Affiliation:
Astronomical Observatory of Trieste
Lucio Crivellari
Affiliation:
Astronomical Observatory of Trieste

Extract

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The ESA “Ultraviolet Bright Star Spectrophotometric Catalogue” (Jamar et al. 1976) and the “Catalogue of 0.2 A Resolution Far-ultraviolet Stellar Spectra Measured with Copernicus” (Snow and Jenkins 1976) have been used to try to separate, by means of simple diagrams, O-type stars belonging to different luminosity classes and having different temperatures. The ESA catalogue gives absolute fluxes for 43 O-type stars, mostly reddened, with a spectral resolution of 35–40 A, depending on the channel, in the wavelength range 1350–2550 A. The Copernicus catalogue gives spectra between 1000 and 1450 A for 17 O-type stars, with low reddening, at 0.2 A resolution.

Type
Session 2: U.V. Spectroscopy
Information
Symposium - International Astronomical Union , Volume 83: Mass Loss and Evolution of O-Type Stars , 1979 , pp. 109 - 112
Copyright
Copyright © Reidel 1979 

References

Conti, P.S. 1973, Ap. J. 179, 181.Google Scholar
Kurucz, R.L., Peytremann, E. and Avrett, E.H. 1974, “Blanketed Model Atmospheres for Early-type Stars”, Smithsonian Institution, Washington D.C. Google Scholar
Jamar, C. et al. 1976, “Ultraviolet Bright Star Spectrophotometric Catalogue”, ESA SR-27.Google Scholar
Nandy, K. et al. 1975, Astr. Ap. 44, 195.Google Scholar
Snow, T.P. and Jenkins, E.B. 1976, Ap. J. Suppl. 33, 269.CrossRefGoogle Scholar