Abstract
view Abstract Citations (5) References (10) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Analysis of "noise" in the rich absorption-line spectra of quasars. I. Methods of scrambled standard lines. Joss, P. C. ; Ruffa, G. J. Abstract A method is presented for estimating the number of accidental redshift systems in quasar absorption-line spectra. The method is based on the use of simulated sets of standard spectral lines in which correlations among the actual line wavelengths of specific ions are neglected. This method is applied to the observed spectra of Ton 1530, PHL 938, and PHL 957. Higher estimates of the number of accidental systems are derived than those obtained by some previous investigators. The original method devised by Bahcall (1968) gives a reasonable lower limit to the number of accidental systems, while the present method gives a reasonable upper limit to the number of such systems. Publication: The Astrophysical Journal Pub Date: December 1977 DOI: 10.1086/155688 Bibcode: 1977ApJ...218..347J Keywords: Absorption Spectra; Line Spectra; Quasars; Random Noise; Red Shift; Spectrum Analysis; Random Processes; Statistical Analysis; Tables (Data); Astrophysics full text sources ADS | data products NED (3)
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