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On the Absolute Energy Distributions of the Sun, of the “Solar Analogs” 16 CYG B, 16 CYG A, VB 64 and of Vega

Published online by Cambridge University Press:  30 March 2016

H. Neckel
H. Neckel*
Affiliation:
Hamburger Sternwarte

Abstract

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In 1984 Neckel and Labs (1984) published improved absolute solar radiation data which followed from an absolute calibration of the Fourier-transform-spectra (FTS) obtained by J. Brault at Kitt Peak. Fig. 1 shows two pages of that special solar spectrum atlas which served to derive the diverse published spectral data. The upper spectrum concerns the disk-center, the lower one the disk-averaged intensity. Both spectra are plotted in the same absolute scale (numbers on the left ordinate axis). The right ordinate axis refers to the full disk spectrum only; it yields the solar irradiance at 1 AU. These spectra, which extend from 3300 to 12500 Å and are stored on magnetic tape, allow an easy derivation of any desired spectral data; e. g. of the spectral averages for successive, rectangular passbands (10, 20 or 50 Å wide) or for any arbitrary passbands used by other observers. The maxima in successive passbands can be used to localize the level of the ‘continuum’ (dashed lines in Fig. 1).

Type
Joint Commission Meetings
Information
Highlights of Astronomy , Volume 7: Highlights of Astronomy. As presented at the XIXth General Assembly of the IAU, 1985 , 1986 , pp. 863 - 873
Copyright
Copyright © Reidel 1986

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