**Table 5:** Results from molecular line modelling (with 1 $\sigma$ errors).
	dCSE					aCSE
Source	$M_{{\rm gas}}$	$T_{{\rm kin}}$	$R_{\rm s}$	$V_{{\rm s}}$	age	$\dot{M}_{{\rm gas}}$	$v_{\rm p}$	${\rm Molecule}^1$
	[ $M_{\odot}$ ]	[K]	[cm]	[km s^-1]	[yr]	[ ${M}_{\odot}~{\rm yr}^{-1}$ ]	[km s^-1]
R Scl	$(2.5\pm0.5)\times10^{-3}$	>20	$8.7\times10^{16}$	15.5	1800	$3.0\times10^{-7}$	10.5	HCN
U Cam	$(9.5\pm1.0)\times10^{-4}$	>130	$4.7 \times10^{16}$	23.0	650	$2.0\times10^{-7}$	12.0	CO
U Ant	$(1.9\pm0.2)\times10^{-3}$	>200	$1.7\times10^{17}$	19.0	2800	$2.0\times10^{-8}$	4.0	CO
V644 Sco	$(2.5\pm0.3)\times10^{-3}$	$170\pm100$	$(1.1\pm0.2)\times10^{17}$	23.0	1500	$5.0\times10^{-8}$	5.0	HCN
DR Ser	$(1.0\pm0.2)\times10^{-3}$	>100	$(8.0\pm1.5)\times10^{16}$	20.0	1300	$3.0\times10^{-8}$	5.0	HCN
S Sct	$(7.5\pm1.0)\times10^{-3}$	>60	$4.2\times10^{17}$	16.5	8100	$2.0\times10^{-8}$	4.0	CO
TT Cyg	$(4.0\pm1.0)\times10^{-3}$	>200	$3.2\times10^{17}$	12.5	8100	$3.2\times10^{-8}$	4.0	CO

¹ The molecular line emission used for estimating the properties of the aCSEs.
Note that in the analysis of the dCSEs CO line emission was used in all cases.

Source LaTeX | All tables | In the text

	1 Introduction
	2 Observations
	3 Radiative transfer
	4 Dust modelling
	5 Molecular line modelling
	6 Discussion
	7 Conclusions
	References