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Absorption Line Systems at z > 3 in the QSO 2000-330

Published online by Cambridge University Press:  19 July 2016

R.W. Hunstead ,
M. Pettini ,
J.C. Blades  and
H.S. Murdoch
R.W. Hunstead
Affiliation:
School of Physics, University of Sydney, Australia
M. Pettini
Affiliation:
Royal Greenwich Observatory, Hailsham, E. Sussex, U.K.
J.C. Blades
Affiliation:
Space Telescope Science Institute, Baltimore, U.S.A.
H.S. Murdoch
Affiliation:
School of Physics, University of Sydney, Australia

Extract

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This paper presents some preliminary results from analysis of our high-resolution (30–35 km/s FWHM) spectra of the Lyman α forest region in the z = 3.78 QSO 2000-330. These spectra were obtained at the Anglo-Australian Telescope over several observing seasons and have been analysed by fitting multiple-cloud Voigt profiles to Lyman series and heavy-element absorption lines. Two specific issues are addressed here:

  1. (i) The distribution of column densities, N(H I), and velocity dispersions, b, for hydrogen clouds in the interval zabs = 3.43–3.78;

  2. (ii) Heavy-element abundances in a system at zabs = 3.1723.

Type
Chapter XIV: Absorption in Quasi-Stellar Objects
Information
Symposium - International Astronomical Union , Volume 124: Observational Cosmology , 1987 , pp. 799 - 802
Copyright
Copyright © Reidel 1987 

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