The absorbers towards Q0836+113
Abstract
We have performed RIJHK_S imaging of the field around the z=2.67 quasar Q0836+113, which presents several metal line and a damped Ly\alpha absorption systems in its spectrum. The images reveal the existence of a red K_S=18.9 object \approx 11 arcsec 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 z=1.82. 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 3\sigma limiting magnitude for extended objects of K_S=20.8, the damped Ly\alpha absorber apparently detected as a Ly\alpha emitter at z=2.47. It is also suggested, that object ``SW'' from Wolfe et al. (1992) could be the galaxy responsible for the claimed MgII absorption at z=0.37.
Cite
@article{arxiv.astro-ph/9610141,
title = {The absorbers towards Q0836+113},
author = {N. Benitez and E. Martinez-Gonzalez and J. L. Sanz and A. Aguirre and M. Alises},
journal= {arXiv preprint arXiv:astro-ph/9610141},
year = {2007}
}
Comments
6 pages, 6 figures, aatex. Accepted for publication in Astronomy & Astrophysics