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| Paper: |
The Shock Chemistry of Phosphorus in the Shocked Region L1157 B1 |
| Volume: |
476, New Trends in Radio Astronomy in the ALMA Era |
| Page: |
333 |
| Authors: |
Aota, T.; Aikawa, Y. |
| Abstract: |
We study the evolution of phosphorous-bearing species in one-dimensional C-shock models.
We find that the abundances of P-bearing species depend sensitively on the elemental abundance of P in the
gas phase and on the abundance of N atoms in the pre-shock gas.
The observed abundance of PN and the non-detection of PO towards L1157 B1 are
reproduced in C-shock models with shock velocity v = 20 km s-1 and pre-shock
density n(H2) = 104 cm–3 – 105 cm–3, if the elemental abundance of P in the gas phase is
∼ 10–9 relative to hydrogen and the N-atom abundance is n(N)/nH ∼ 10–5
in the pre-shock gas.
We also find that P-chemistry is sensitive to O- and N-chemistry, because N atoms are destroyed mainly by OH and NO. |
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