Temperature stratification in a molecular shock: Analysis of the emission of H2 pure rotational lines in IC443G

Open Access

Table 3

Results of our analysis of the H₂ S(0) to S(7) pure rotational lines.

Model	$N_{tot}^{avg} ({cm}^{- 2})$ $N_{{\rm{tot}}}^{{\rm{avg}}}\left( {{\rm{c}}{{\rm{m}}^{ - 2}}} \right)$	$N_{tot}^{\max} ({cm}^{- 2})$ $N_{{\rm{tot}}}^{\max }\left( {{\rm{c}}{{\rm{m}}^{ - 2}}} \right)$	$n_{H_{2}} ({cm}^{- 3})$ ${n_{{{\rm{H}}_2}}}\left( {{\rm{c}}{{\rm{m}}^{ - 3}}} \right)$	$M_{H_{2}} (M_{⊙})$ ${M_{{{\rm{H}}_2}}}\left( {{M_ \odot }} \right)$	T^avg (K)	$χ_{avg}^{2}$ $\chi _{{\rm{avg}}}^2$
Two-temperature, ‘warm’	4.8 ± 0.3 × 10¹⁹	1.0 ± 0.1 × 10¹⁰	0.3−1.5 × 10³	1.5 ± 0.3	970 ± 40	1.9
Two-temperature, ‘cold’	4.0 ± 0.1 × 10¹⁰	1.1 ± 0.1 × 10¹¹	0.1−1.1 × 10⁴	14±1	430 ± 130	1.7
Thermal admixture, LTE	${1.9}_{- 0.7}^{+ 1.0} \times 10^{22}$ $1.9_{ - 0.7}^{ + 1.0} \times {10^{22}}$	${6.4}_{- 2.0}^{+ 2.9} \times 10^{22}$ $6.4_{ - 2.0}^{ + 2.9} \times {10^{22}}$	0.3-1 × 10⁵	$250_{- 90}^{+ 130}$ $250_{ - 90}^{ + 130}$	60 ± 30	1.2
Thermal admixture, SE	${1.7}_{- 0.6}^{+ 0.9} \times 10^{22}$ $1.7_{ - 0.6}^{ + 0.9} \times {10^{22}}$	${6.0}_{- 1.7}^{+ 2.5} \times 10^{22}$ $6.0_{ - 1.7}^{ + 2.5} \times {10^{22}}$	0.1–1.5 × 10⁵	$220_{- 80}^{+ 110}$ $220_{ - 80}^{ + 110}$	80 ± 40	0.9

Notes. The two-temperature models 'warm' and 'cold' refer respectively to the 'gray' and 'red' linear models in Fig. 5 (see Sect. 4.2). The thermal admixture models refer to the results presented in Fig. 9 (see Sect. 5.2). The terms $N_{tot}^{avg} and N_{tot}^{\max}$ $N_{{\rm{tot}}\,\,\,}^{{\rm{avg}}}\,{\rm{and}}\,\,N_{{\rm{tat}}}^{\max }$ are respectively the average and peak column densities across the maps; $n_{H_{2}}$ ${n_{{{\rm{H}}_{\rm{2}}}}}$ is the local density inferred for a clump length l = 0.1–0.5 pc; $M_{H_{2}}$ ${M_{{{\rm{H}}_{\rm{2}}}}}$ is the molecular mass; T^avg is the average excitation temperature (LTE) or kinetic temperature (SE) across the map; and $χ_{avg}^{2}$ $\chi _{{\rm{avg}}}^2$ is the average value returned by the chi-square test across the map.

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.