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Astron. Astrophys. 321, 129-133 (1997)
The absorbers towards Q0836+113
*
N. Ben tez 1, 2,
E. Mart nez-González 1,
J.L. Sanz 1,
A. Aguirre 3 and
M. Alises 3
1 IFCA, CSIC-UC, Fac. de Ciencias, Avda. Los Castros s/n,
E-39005 Santander, Spain
2 Dpto. de F sica
Moderna, UC, Fac. de Ciencias, Avda. Los Castros s/n, E-39005
Santander, Spain
3 Centro Astronómico Hispano-Alemán, Calar
Alto, Almer a, Spain
Received 2 June 1996 / Accepted 2 October 1996
Abstract
We have performed imaging of the field around
the quasar Q0836+113, which presents several
metal line and a damped Ly absorption systems in
its spectrum. The images reveal the existence of a red
object from the quasar. On
the basis of the empirical relationships between absorption radius and
luminosity we conclude that this object may be the CIV absorber at
. This could be the first detection of a high
redshift galaxy causing high-ionisation absorption. After carefully
subtracting the QSO, we do not detect, up to a
limiting magnitude for extended objects of , the
damped Ly absorber apparently detected as a Ly
emitter at . This imposes
an upper limit on its H emission comparable to
the results obtained spectroscopically by Hu et al. (1993). It is also
suggested, that object "SW" from Wolfe et al. (1992) could be the
galaxy responsible for the claimed MgII absorption at
.
Key words: galaxies:
evolution
galaxies: halos
quasars: individual:
Q0836+113
quasars: absorption lines
* Based on observations made with the Nordic Optical Telescope
Send offprint requests to: N. Benítez
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© European Southern Observatory (ESO) 1997
Online publication: June 30, 1998
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