Statistical nuclear spin ratios of deuterated ammonia in the pre-stellar core L1544

Open Access

Fig. 4

Integrated J_{K_a, K_b} = 1₁₁ − 1₀₁ line intensity maps of oNH₂D and pNH₂D towards L1544 observed with the IRAM 30 m telescope. The intensity is on the $T_{A}^{*}$ $\[T_{\mathrm{A}}^{*}\]$ scale. The beam sizes at the line frequencies (85.9 GHz and 110.2 GHz) are indicated in the bottom right.

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