A re-analysis of the spectrum of QSO 2206 - 199

Details A re-analysis of the spectrum of QSO 2206 - 199 A re-analysis of the spectrum of QSO 2206 - 199

Feb 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993mnras.260..589r&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 260, no. 3, p. 589-609.

Astronomy and Astrophysics

Astronomy

61

Absorption Spectra, Lyman Alpha Radiation, Lyman Spectra, Quasars, H I Regions, Red Shift, Spectrum Analysis

Scientific paper

The spectra of the QSO 2206 - 199 are reanalyzed in order to investigate whether different techniques applied to the same high-resolution data can yield substantially different results. Several new identifications for narrow lines interpreted by Pettini et al. (1990) as due to cool hydrogen clouds are suggested. The distribution of Doppler parameter and column densities of the systems are given and the two-point correlation function is computed. The results for the Ly-alpha forest of 2206 - 199 are compared with those found by Pettini et al. A range of selection effects associated with such analyses are explained and their role in accounting for the differences between two independent analyses of 2206 - 199 and the study by Carswell et al. (1991) of QSO 1100 - 264 is assessed.

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