0000000001307468
AUTHOR
M. Guelin
Detection of deuterated molecules, but not of lithium hydride, in the z = 0.89 absorber toward PKS 1830−211
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, 7LiH, at redshift z=0.89 in the spiral galaxy intercepting the line of sight to the quasar PKS1830-211. We used ALMA to observe several submillimeter lines of ND, NH2D, and HDO, and their related isotopomers NH2, NH3, and H2^18O, in absorption against the southwest image of the quasar, allowing us to derive XD/XH abundance ratios. The absorption spectra mainly consist of two distinct narrow velocity components for which we find remarkable differences. One velocity component shows XD/XH abundances that…
PKS1830-211 HDO, ND and NH_2_D spectra
VizieR online Data Catalogue associated with article published in journal Astronomy & Astrophysics with title 'Detection of deuterated molecules, but not of lithium hydride, in the z=0.89 absorber toward PKS 1830-211.' (bibcode: 2020A&A...637A...7M)