Chemical modeling of L183 (L134N): an estimate of the ortho/para H${_2}$ ratio

Context. The high degree of deuteration observed in some prestellar cores depends on the ortho-to-para H2 ratio through the H fractionation.Aims. We want to constrain the ortho/para H2 ratio across the L183 prestellar core. This is required to correctly describe the deuteration amplification phenome... View More