Fig. 5 from Spectral Variability of Quasars in the Sloan Digital Sky Survey. I. Wavelength Dependence

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Spectral Variability of Quasars in the Sloan Digital Sky Survey. I. Wavelength Dependence

Authors: Brian C. Wilhite, Daniel E. Vanden Berk, Richard G. Kron, Donald P. Schneider, Nicholas Pereyra, Robert J. Brunner, Gordon T. Richards, and Jonathan V. Brinkmann

Wilhite et al. 2005 The Astrophysical Journal 633 638.

Provider: AAS Journals

Caption: Fig. 5.

Final "correction" spectrum, derived from 71 stars, for plate 547. All low‐S/N epoch quasar spectra on plate 547 are multiplied by the fifth‐order polynomial fit seen here to match the spectrophotometric calibration of the high‐S/N epoch. Note that the largest corrections are only of the order of a few percent.

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