All Tables

Table 1: Transitions observed with the IRAM-30 m telescope and the Plateau de Bure interferometer.
Table 2: Line parameters of CO isotopomers at the peak position (IRAM-30 m observations). All line parameters have been obtained from a two-Gaussian fit, except for the C¹⁷O (1-0) line, for which we have used METHOD HFS of the CLASS program to take into account the hyperfine structure (see text).
Table 3: CH₃C₂H line parameters (IRAM-30 m observations).
Table 4: Temperature and column density estimates. $\theta _{\rm s}$ and D are the angular and linear source diameter, respectively. $T_{\rm k}$ is the kinetic temperature, and $N_{\rm tot}$ the total column density of the corresponding molecular species.
Table 5: Mass and H₂ column- and volume-density estimates from lines. Molecular abundances relative to $\rm H_2$ have been assumed equal to 1.2 $\times$ 10^-7, 3.4 $\times$ 10^-8 and $2 \times 10^{-9}$ for C¹⁸O, C¹⁷O and CH₃C₂H, respectively. $N_{\rm H_2}$ and $\Delta v_{1/2}$ are the $\rm H_2$ column density and the FWHM of the lines, respectively.
Table 6: Mass and $\rm H_2$ column- and volume-density estimated from continuum observations.