红外暗云G 011.0970–0.1093的多种分子氘化增丰差异性与气态CO耗损

Using the IRAM (Institut de Radioastronomie Millimtrique) 30 m for a molecular line imaging survey at 1.34.0 mm, in conjuntion with archival dust contiunuum images spanning 70870 m, and $ {\rm{NH}}_3$$(J, K) = (1, 1)$ and $(2, 2)$ images from GBT (Green Bank Telescope), a pair of neighboring clumps within the tail of filamentary molecular cloud G 011.09700.1093 is studied. While both clumps coincide spatially with the dust continuum emission peak at 870 m, they exhibit contrasting brightnesses at 70 m. Comparative analysis of these two clumps reveals: (1) The gas and dust temperatures are tightly coupled within this extremely young high-mass star-forming region. (2) Gas-dust temperatures of the 70 m bright clump decrease from the center ($ \sim17 $ K) to the envelope edge, suggesting the initiation of protostellar activities within the clump; conversely, the central region of the 70 m dark cloud clump is colder ($ \sim11 $ K) and denser ($ \sim5\times10^{22}\, \rm{cm}^{-2} $) compared to its periphery, with a strong anti-correlation between the $ {\rm{H}}_2$ column density and dust temperature pixel by pixel, indicating dominant external heating shaping the temperature profile of this clump. (3) A strong positive correlation exists between the gaseous ${\rm{C}}^{18}{\rm{O}}$ depletion ($f_{\rm{D}}({{\rm{C}}^{18}{\rm{O}}})$) and the deuterium fraction of ${\rm{HCO}}^+$ at pc scales, with $f_{\rm{D}}({{\rm{C}}^{18}{\rm{O}})}$ reaching up to 7 in the cold and dense ${\rm{DCO}}^+$ dominated region. (4) With gas-dust temperatures ranging from 10 K to 20 K and $ {\rm{H}}_2$ column densities ranging from $10^{22}\,{{\rm{cm}}^{-2}}$ to $10^{23}\,{{\rm{cm}}^{-2}}$, ${\rm{HCO}}^+$, ${\rm{N}}_2{\rm{H}}^+$, and $ {\rm{HNC}}$ exhibit significant deuteration enhancements towards the colder and denser clump, while $ {\rm{HCN}}$ shows greater deuteration enhancement in slightly warmer and 70 m brighter clumps, and $ {\rm{NH}}_3$ deuteration shows no significant change. These deuteration differentiation among species are likely related to their gas-dust forming pathways.