Astronomy & Astrophysics

Table 1: Continuum fluxes. Positions are the 1.2-mm peak emission positions. Mid-IR fluxes are from MSX images. Sub-mm fluxes from SCUBA images. Mm fluxes from SIMBA images. "-'' means that no emission was detected. Notes: ^* fluxes interpolated from SED diagrams; ^** MAMBO mm fluxes from Beuther et al. (2002). References: ¹ Walsh et al. (1998); ² Kurtz et al. (1994); ³ Sridharan et al. (2002); ⁴ Snell & Bally (1986).
Table 2: IRAS fluxes and association with mm sources.
Table 3: CH₃CN Spectral line parameters for the methanol maser sites derived from Gaussian fitting.
Table 4: C¹⁸O spectral line parameters for the methanol maser sites derived from Gaussian fitting.
Table 5: Physical properties of the methanol maser sites derived from the SED and spectral line analysis. $N_{\rm H_2}$ and $n_{\rm H_2}$ are derived from $M_{\rm gas}$ in the continuum case by using an angular size of 24''. The values of $N_{\rm H_2}$ derived using $d_{\rm cold}$ are given in parentheses. $M_{\rm gas}$ in the spectral line case is derived from $N_{\rm H_2}$ by using an angular size of 34''.
Table 6: Summary of the mm clump properties. $A_{\rm v}$ is derived from $M_{\rm gas}$ in the continuum case of Table 5. Note: ^* A clump angular size of 24'' is used.