Far-Ultraviolet Intensities of Orion Stars

  • George R. Carruthers
Chapter
Part of the International Astronomical Union / Union Astronomique Internationale book series (IAUS, volume 36)

Abstract

Photometric data in the 1050–1180 Å and 1230–1350 Å wavelength ranges, and electrono-graphic spectra in the 1000–1600 Å wavelength range, were obtained in an Aerobee rocket flight on January 30, 1969. The spectral intensities derived from these data for main-sequence stars are in good agreement with the model atmospheres of Morton and co-workers. Giant and supergiant stars, however, appear to be up to one magnitude weaker, at 1115 Å, than main-sequence stars of the same spectral class.

The correction for interstellar reddening appears to be not inconsistent with a 1/λ extrapolation of earlier determinations of Smith (1967) and Stecher (1965), except in the case of θ Ori, in which the predicted color excess appears to be much too great, confirming the existence of a peculiar reddening law in the Orion Nebula region.

Keywords

Model Atmosphere Photometric Data Color Excess Interstellar Extinction Extinction Curve 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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Copyright information

© IAU 1970

Authors and Affiliations

  • George R. Carruthers
    • 1
  1. 1.E. O. Hulburt Center for Space ResearchNaval Research LaboratoryUSA

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