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Detection of deuterated molecules, but not of lithium hydride, in the z=0.89 absorber toward PKS 1830−211
2020
Astronomy and Astrophysics
Deuterium and lithium are light elements of high cosmological and astrophysical importance. In this work we report the first detection of deuterated molecules and a search for lithium hydride, 7 LiH, at redshift z = 0.89 in the spiral galaxy intercepting the line of sight to the quasar PKS 1830−211. We used ALMA to observe several submillimeter lines of ND, NH 2 D, and HDO, and their related isotopomers NH 2 , NH 3 , and H 18 2 O, in absorption against the southwest image of the quasar,
doi:10.1051/0004-6361/202037628
fatcat:tftetx2cb5cqxb7yovf4ri4tgi