Statistical analysis of C IV doublets in QSO absorption spectra

Details Statistical analysis of C IV doublets in QSO absorption spectra Statistical analysis of C IV doublets in QSO absorption spectra

Apr 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991azh....68..261v&link_type=abstract

Astronomicheskii Zhurnal (ISSN 0004-6299), vol. 68, Mar.-Apr. 1991, p. 261-274. In Russian.

Astronomy and Astrophysics

Astronomy

1

Absorption Spectra, Line Spectra, Quasars, Statistical Analysis, Astronomical Spectroscopy, Autocorrelation, Cosmology

Scientific paper

Published data on nine QSOs with a massive peak at the position of the C IV doublet line ratio in the autocorrelation functions of the spectra are analyzed. The velocity distribution of ejected clouds with z(a) approximately equal to z(e) is studied, and the mean density of the C IV absorption lines is estimated. The observed two-point correlation function of the C IV doublets is examined. C IV absorbing clouds were found to cluster on the scale of about 4000 km/s. In the velocity distribution of C IV clouds relative to their 'own' QSO, a massive peak was observed in the interval of velocities up to 5000 km/s near the QSO even when QSOs with U-shaped absorption lines are excluded from the sample under study.

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