Table A.1: p- ${\rm H}_{3}{\rm O}^{+}$ column density upper limits.
Source $T_{\rm rms}$ $T_{\rm R}$ $\Delta {v}^{(a)}$ $\eta_{\rm b}$ N1(b) $T_{\rm ex_1}$ N2(c) $T_{\rm ex_2}$
name (K) (K) ( ${\rm km~s}^{-1}$)   ( ${\rm cm}^{-2}$) (K) (1015 ${\rm cm}^{-2}$) (K)
IRAM 04191 0.054 <0.16 0.35 0.65 <3.5 7.0 <1.1 4.1
L 1521F 0.042 <0.13 0.31 0.65 <0.90 6.1 <0.85 4.1
L 1544 0.025 <0.08 0.33 0.65 <0.55 6.1 <0.63 3.9
L 183 0.031 <0.09 0.23 0.6 <0.53 5.9 <0.50 3.9
Oph D 0.083 <0.25 0.24 0.6 <0.30 6.0 <1.1 4.3
L 429 0.043 <0.13 0.40 0.6 <1.5 5.5 <1.1 4.1
L 694-2 0.046 <0.14 0.28 0.6 <0.90 5.9 <0.80 4.1
a Assumed value, derived from previous ${\rm N}_2{\rm H}^+$(1-0) observations (see text); b column density value obtained using n(${\rm H}_2$) and $T_{\rm kin}$ from Table 3; c column density value assuming n(${\rm H}_2$) = 105  ${{\rm cm}}^{-3}$ and $T_{\rm kin}$ = 10 K.

Source LaTeX | All tables | In the text