Volume 413, Number 3, January III 2004
|Page(s)||827 - 831|
|Section||Cosmology (including clusters of galaxies)|
|Published online||07 January 2004|
The broad absorber at z = 3.02 toward CTQ 325 *
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, firstname.lastname@example.org
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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