Fig. 6 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. 6.

Integrated relative flux change (Δf/f) vs. high‐S/N epoch S/N for quasars (left) and stars (right) on all 53 plates with more than 50 days of time lag between observations. The overlaid lines show 2.5 times the 68.3% confidence interval of Δf/f for given values of S/N for all stars. The 364 quasars marked with plus signs are selected to be candidates for the variable quasar sample.

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