Statistics
Scientific paper
Jun 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990mnras.244..450g&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 244, June 1, 1990, p. 450-452.
Statistics
5
Absorption Spectra, Lyman Spectra, Quasars, Stellar Spectra, Line Spectra, Red Shift, Statistical Analysis
Scientific paper
Averagae flux decrements are computed below Ly-alpha and above Ly-beta, D(A) and between Ly-beta and the Lyman limit, D(B) of QSOs from synthetic spectra as a function of emission redshift on the basis of the presently known statistics of absorption lines. These simulations indicate that a steepening of the intrinsic spectrum of the QSO up to the Lyman limit is not required in order to explain the observed run of D(B)/D(A) with redshift, and that the average observed absorption is consistent with absorption line statistics.
Giallongo Emanuele
Gratton Raffaele
Trevese Dario
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