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The Status of the Absolute Calibration of Stellar Fluxes Between 912 and 1200 Å

Published online by Cambridge University Press:  04 August 2017

R. S. Polidan  and
J. B. Holberg
R. S. Polidan
Affiliation:
Lunar and Planetary Laboratory. University of Arizona
J. B. Holberg
Affiliation:
Lunar and Planetary Laboratory. University of Arizona

Abstract

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Recent results have shed new light on the status of the calibration of absolute stellar fluxes between 912 and 1200 Å. Observations of hot white dwarfs, subdwarfs and planetary nebula nuclei with the Voyager ultraviolet spectrometers provide evidence that the current calibration agrees very well with extrapolations of IUE energy distributions shortwards of 1200 Å. Voyager observations of main sequence B-stars used as flux calibration sources have revealed that many are variable in brightness in the 912–1200 Å region. We conclude there is no current observational motivation for any revision of the 912 to 1200 Å calibration described by Holberg et al. (1982).

Type
Research Article
Information
Symposium - International Astronomical Union , Volume 111: Calibration of Fundamental Stellar Quantities , 1985 , pp. 479 - 483
Copyright
Copyright © Reidel 1985 

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