The complex molecular absorption line system at z=0.886 towards PKS1830-211
Abstract
New millimeter wave observations of the molecular absorption line system in the gravitational lens to PKS1830-211 at z=0.88582 is presented. Self-calibrated interferometer data shows unequivocally that the previously detected absorption component is associated with the gravitationally lensed south-west image of the background source. A second absorption line of HCO+(2-1) at z=0.88582 is detected. This component is shifted in velocity by -147 km/s relative to the main absorption line, and is shown to be associated with the north-east image. These two absorption lines are used to constrain the mass of the lensing galaxy. Upper limits to absorption and emission lines from the possible absorption system at z=0.1927, seen in 21cm HI by Lovell et al, are reported.
Keywords
Cite
@article{arxiv.astro-ph/9709141,
title = {The complex molecular absorption line system at z=0.886 towards PKS1830-211},
author = {Tommy Wiklind and Francoise Combes},
journal= {arXiv preprint arXiv:astro-ph/9709141},
year = {2009}
}
Comments
16 pages, 7 figures, Accepted for publication in ApJ