Paper:	Molecular Absorption Lines at High Redshift
Volume:	156, Highly Redshifted Radio Lines
Page:	202
Authors:	Wiklind, T.; Combes, F.
Abstract:	The four known molecular absorption line systems at redshifts z = 0.25-0.89 are discussed. Two of the systems originate in the galaxy hosting the `background' AGN, while in two cases the absorption occurs in truely intervening galaxies. Indirect evidence for the existence of very small scale structure in the molecular ISM is presented. A new absorption line at z = 0.89 towards PKS1830-211 opens up interesting possibilities to accurately derive the mass of the lensing galaxy.

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