Molecular absorption lines at high redshift
Wiklind, Tommy · Combes, Francoise
Original · EN
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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