| Issue |
A&A
Volume 413, Number 3, January III 2004
|
|
|---|---|---|
| Page(s) | 827 - 831 | |
| Section | Cosmology (including clusters of galaxies) | |
| DOI | https://doi.org/10.1051/0004-6361:20031559 | |
| Published online | 07 January 2004 | |
The broad 
absorber at z = 3.02 toward
CTQ 325
*
1
Department of Theoretical Astrophysics, Ioffe Physico-Technical Institute, 194021 St. Petersburg, Russia
2
European Southern Observatory, Karl-Schwarzschild-Strasse 2, 85748 Garching bei München, Germany
3
Observatoire de Genève, 1290 Sauverny, Switzerland
Corresponding author: S. A. Levshakov, lev@astro.ioffe.rssi.ru
Received:
19
August
2003
Accepted:
29
September
2003
We report on the multiphase
absorption-line system detected at a redshift 
in the spectrum of the quasi-stellar object CTQ 325 (
).
The system is displaced by 
km s-1 to the blue of the
systemic velocity defined by the center of the symmetric 
quasar emission line.
It consists of shallow and broad
(~700 km s-1 FWHM) absorption lines of 
,
, and 
,
produced by collisionally ionized gas and of
narrow absorption lines (
km s-1) of Ly
,
, and 
produced
by photoionized gas.
Possible origins
of this system are discussed.
Key words: cosmology: observations / line: formation / line: profiles / galaxies: abundances / quasars: absorption lines / quasars: individual: CTQ 325
© ESO, 2004
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