The converging gas flow around the infrared dark cloud G28.37

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Volume 706 (February 2026)

A&A, 706 (2026) A329

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Table 3

Infall parameters.

#	$\begin{matrix} Δ v \\ \frac{km}{s} \end{matrix}$ $Mathematical equation: $\matrix{ {{\rm{\Delta }}v} \cr {{{{\rm{km}}} \over {\rm{s}}}} \cr } $$	$\begin{matrix} v_{blue} \\ \frac{km}{s} \end{matrix}$ $Mathematical equation: $\matrix{ {{v_{{\rm{blue}}}}} \cr {{{{\rm{km}}} \over {\rm{s}}}} \cr } $$	$\begin{matrix} v_{red} \\ \frac{km}{s} \end{matrix}$ $Mathematical equation: $\matrix{ {{v_{{\rm{red}}}}} \cr {{{{\rm{km}}} \over {\rm{s}}}} \cr } $$	$\begin{matrix} T_{B} \\ \frac{Jy}{beam} \end{matrix}$ $Mathematical equation: $\matrix{ {{T_{\rm{B}}}} \cr {{{{\rm{Jy}}} \over {{\rm{beam}}}}} \cr } $$	$\begin{matrix} T_{R} \\ \frac{Jy}{beam} \end{matrix}$ $Mathematical equation: $\matrix{ {{T_{\rm{R}}}} \cr {{{{\rm{Jy}}} \over {{\rm{beam}}}}} \cr } $$	$\begin{matrix} T_{D} \\ \frac{Jy}{beam} \end{matrix}$ $Mathematical equation: $\matrix{ {{T_{\rm{D}}}} \cr {{{{\rm{Jy}}} \over {{\rm{beam}}}}} \cr } $$	$\begin{matrix} v_{in} \\ \frac{km}{s} \end{matrix}$ $Mathematical equation: $\matrix{ {{v_{{\rm{in}}}}} \cr {{{{\rm{km}}} \over {\rm{s}}}} \cr } $$	$\begin{array}{r} {\dot{M}}_{in} \\ \frac{10^{- 4} M_{⊙}}{yr} \end{array}$ $Mathematical equation: $\matrix{ \hfill {{{\dot M}_{{\rm{in}}}}} \cr \hfill {{{{{10}^{ - 4}}{{\rm{M}}_ \odot }} \over {{\rm{yr}}}}} \cr } $$
13	2.2	77.0	86.7	0.117	0.042	0.018	0.11	0.45
8	2.6	77.9	85.1	0.622	0.062	0.003	0.38	2.7
11	3.0	78.7	82.7	0.499	0.052	0.023	1.01	4.9

Notes. The value Δv represents the FWHM from H¹³CO+. All other spectral parameters are from HCO⁺. The values v_blue, v_red. T_B, and T_R represent the blue- and redshifted peak-velocities and peak intensities, and T_D represents the intensity at the dip-velocity.

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