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Astron. Astrophys. 321, 129-133 (1997)


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The absorbers towards Q0836+113 *

N. Bentez 1, 2, E. Martnez-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 Fsica Moderna, UC, Fac. de Ciencias, Avda. Los Castros s/n, E-39005 Santander, Spain
3 Centro Astronómico Hispano-Alemán, Calar Alto, Almera, Spain

Received 2 June 1996 / Accepted 2 October 1996

Abstract

We have performed [FORMULA] imaging of the field around the [FORMULA] quasar Q0836+113, which presents several metal line and a damped Ly [FORMULA] absorption systems in its spectrum. The images reveal the existence of a red [FORMULA] object [FORMULA] 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 [FORMULA]. 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 [FORMULA] limiting magnitude for extended objects of [FORMULA], the damped Ly [FORMULA] absorber apparently detected as a Ly [FORMULA] emitter at [FORMULA]. This imposes an upper limit on its H [FORMULA] 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 [FORMULA].

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

© European Southern Observatory (ESO) 1997

Online publication: June 30, 1998

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