Deuterium fractionation as a multi-phase component tracer in the Galactic Centre
L. Colzi,
J. Martín-Pintado,
V. M. Rivilla
et al.
Abstract:The Central Molecular Zone (CMZ) contains most of the mass of our Galaxy but its star formation rate is one order of magnitude lower than in the Galactic disc. This is likely related to the fact that the bulk of the gas in the CMZ is in a warm (>100 K) and turbulent phase with little material in the pre-stellar phase. We present in this Letter observations of deuterium fractionation (D/H ratios) of HCN, HNC, HCO + , and N 2 H + towards the CMZ molecular cloud G+0.693-0.027. These observations clearly show, for… Show more
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