Absolute spectrophotometry of Wolf-Rayet stars from 1200 to 7000 A - A cautionary tale

Details Absolute spectrophotometry of Wolf-Rayet stars from 1200 to 7000 A - A cautionary tale Absolute spectrophotometry of Wolf-Rayet stars from 1200 to 7000 A - A cautionary tale

Mar 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984apj...278..233g&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 278, March 1, 1984, p. 233-240.

Astronomy and Astrophysics

Astronomy

33

Stellar Spectrophotometry, Ultraviolet Astronomy, Wolf-Rayet Stars, Continuous Spectra, Interstellar Extinction, Interstellar Matter, Wavelengths

Scientific paper

It is demonstrated that absolute spectrophotometry of the continua of Wolf-Rayet stars may be obtained over the wavelength range 1200-7000 A using IUE and optical measurements. It is shown that the application of a 'standard' reddening law to the observed data gives spurious results in many cases. Additional UV extinction is apparently necessary and may well be circumstellar in origin. In such hot stars, the long-wavelength 'tail' of the emergent stellar continuum are measured. The inadequacy of previous attempts to determine intrinsic continua and effective temperatures of Wolf-Rayet stars is pointed out.

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