| Issue |
A&A
Volume 383, Number 3, MarchI 2002
|
|
|---|---|---|
| Page(s) | 813 - 822 | |
| Section | Cosmology (including clusters of galaxies) | |
| DOI | https://doi.org/10.1051/0004-6361:20011807 | |
| Published online | 15 March 2002 | |
Metal abundances and kinematics of quasar absorbers*
I. Absorption systems toward J2233–606
1
Division of Theoretical Astrophysics, National Astronomical Observatory, Mitaka, Tokyo 181-8588, Japan
2
Department of Theoretical Astrophysics, Ioffe Physico-Technical Institute, 194021 St. Petersburg, Russia
3
Osservatorio Astronomico di Trieste, Via G. B. Tiepolo 11, 34131 Trieste, Italy
Corresponding author: S. A. Levshakov, lev@yso.mtk.nao.ac.jp
Received:
4
October
2001
Accepted:
18
December
2001
The metal line profiles of different ions observed in
high 
column density
systems [ N() 
cm-2]
in quasar spectra can be used to constrain the
ionization structure and kinematic characteristics of the absorbers.
For these purposes, a modified Monte Carlo Inversion (MCI) procedure
was applied to the study of three absorption systems in the spectrum of
the HDF-South quasar J2233–606 obtained with
the UVES spectrograph at the VLT/Kueyen telescope. The MCI does not confirm
variations of metal abundances within separate systems which were discussed
in the literature. Instead, we found that an assumption of a homogeneous
metal content and a unique photoionizing background is sufficient to describe
the observed complex metal profiles.
It was also found that the
linear size L and the line-of-sight velocity dispersion 
measured within the absorbers obey a scaling relation, namely,
increases with increasing L, and that
metal abundance is inversely proportional to
the linear size of the system: the highest metallicity was measured in
the system with the smallest L.
Key words: cosmology: observations / line: formation / line: profiles / galaxies: abundances / quasars: absorption lines / quasars: individual: J2233–606
Based on public data released from UVES Commissioning at the VLT Kueyen telescope (ESO, Paranal, Chile), the New Technology Telescope (ESO, La Silla, Chile) and the NASA/ESA Hubble Space Telescope obtained at the Space Telescope Science Institute, which is operated by the Association of Universities of Research in Astronomy, Inc. under NASA contract NAS 5-26555.
© ESO, 2002
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