\begin{table}%t4
\caption{\label{tbl:CO_derived_parameters} Summary of the physical parameters of the BRC sample including IRAS luminosities,  CO~derived temperatures and densities, and other star formation tracers. }
\small%\centerline
{
\begin{tabular}{lcccccccccc} 
\hline\hline
&\multicolumn{1}{c}{Lum.}& \multicolumn{1}{c}{$T_{12}$} & \multicolumn{1}{c}{$\tau_{18}$}& \multicolumn{1}{c}{$T_{13/18}$} &
\multicolumn{1}{c}{log $N$(H$_2)$} & \multicolumn{1}{c}{UV Flux} & \multicolumn{4}{c}{Tracers}\\ 
\cline{8-11} SFO~Id. 	&\multicolumn{1}{c}{($L_\odot$)}& \multicolumn{1}{c}{(K)} & 
& \multicolumn{1}{c}{(K)} & \multicolumn{1}{c}{(cm$^{-2}$)} &
\multicolumn{1}{c}{(10$^8$ cm$^{-2}$ s$^{-1}$)}&MSX~PS&CO&Masers&Radio\\ 
\hline\noalign{\smallskip}
\multicolumn{11}{c}{Spontaneous sample$^a$} \\
\hline
45&(30)&13.6&\multicolumn{1}{c}{$\cdots$}&\multicolumn{1}{c}{$\cdots$}&21.5&3.93&
\multicolumn{1}{c}{N}\\
46&20&14.1&\multicolumn{1}{c}{$\cdots$}&\multicolumn{1}{c}{$\cdots$}&21.0&1.46&
\multicolumn{1}{c}{$\cdots$}\\
47&(8400)&24.8&\multicolumn{1}{c}{$\cdots$}&\multicolumn{1}{c}{$\cdots$}&21.4&2.61
&\multicolumn{1}{c}{Y}& & & \\
48&(0.83)&8.1&\multicolumn{1}{c}{$\cdots$}&\multicolumn{1}{c}{$\cdots$}&20.8&1.84
&\multicolumn{1}{c}{$\cdots$}\\
49&(4300)&26.0&\multicolumn{1}{c}{$\cdots$}&\multicolumn{1}{c}{$\cdots$}&21.8&3.32
&\multicolumn{1}{c}{Y}& & & \\ 
50&(2.2)&6.2&\multicolumn{1}{c}{$\cdots$}&\multicolumn{1}{c}{$\cdots$}& $<$20.7&4.34&\multicolumn{1}{c}{$\cdots$}& & &  \\ 
51&16&13.3&0.25&10.3&22.0&6.99 &Y& Red wing&\\
52&22&17.9&0.24&12.1&22.0&1.39 &\multicolumn{1}{c}{$\cdots$}& Wings&&\\
53&(3.4)&17.5&0.20&11.6&21.9&1.47&\multicolumn{1}{c}{$\cdots$}\\ 
56&23&13.8&\multicolumn{1}{c}{$\cdots$}&\multicolumn{1}{c}{$\cdots$}&$<$20.6&1.13&\multicolumn{1}{c}{N}& & & \\
59&13~000&14.9&\multicolumn{1}{c}{$\cdots$}&\multicolumn{1}{c}{$\cdots$}&21.4&36.79
&\multicolumn{1}{c}{N}& &  &HII~region\\
60&(280)&9.8&\multicolumn{1}{c}{$\cdots$}&\multicolumn{1}{c}{$\cdots$}&$<$21.2&2529.35&\multicolumn{1}{c}{Y}\\
61&750&6.6&\multicolumn{1}{c}{$\cdots$}&\multicolumn{1}{c}{$\cdots$}&$<$20.9&0.16&\multicolumn{1}{c}{N}& & &\\
62&18~000&23.9&\multicolumn{1}{c}{$\cdots$}&\multicolumn{1}{c}{$\cdots$}&21.7&16.07
&\multicolumn{1}{c}{N} & & & HII~region\\
80&(220)&14.3&\multicolumn{1}{c}{$\cdots$}&\multicolumn{1}{c}{$\cdots$}&21.4&273.77
&\multicolumn{1}{c}{Y}\\
81&(38)&14.9&\multicolumn{1}{c}{$\cdots$}&\multicolumn{1}{c}{$\cdots$}&21.1&32.25&
\multicolumn{1}{c}{N}\\
83&(110)&4.9&\multicolumn{1}{c}{$\cdots$}&\multicolumn{1}{c}{$\cdots$}&$<$20.7&3.13&\multicolumn{1}{c}{N}& & &  HII~region\\ 
86&880&24.8&0.20&11.1&22.2&7.12&N\\
&&8.4&0.45&7.0&22.0&\multicolumn{1}{c}{$\cdots$}&N\\ 
\hline 
\noalign{\smallskip}
\multicolumn{11}{c}{ Triggered candidate sample$^b$} \\
\hline
57&(210)&32.1&0.07&18.9&22.2&43.48  &\multicolumn{1}{c}{N}& Red shoulder& &  PDR\\ 
58&140&34.6&0.07&20.2&22.1&16.15&\multicolumn{1}{c}{N}&Blue shoulder& &  PDR/UCHII\\ 
66&(190)&19.8&0.20&9.5&22.0&6.35&\multicolumn{1}{c}{N}&Wings?&H$_2$O/Methanol& PDR\\
67&(470)&29.7&0.20&12.4&22.3&6.75&\multicolumn{1}{c}{N}& Blue Shoulder&&PDR\\
70&490&18.2&\multicolumn{1}{c}{$\cdots$}&\multicolumn{1}{c}{$\cdots$}&21.3&6.7&\multicolumn{1}{c}{N}& & &PDR\\ 
73&(210)&16.7&0.08&9.8&21.8&18.81 &N\\
& &13.1&0.08&9.8&21.6&\multicolumn{1}{c}{$\cdots$}&N\\
84&450&20.5&\multicolumn{1}{c}{$\cdots$}&\multicolumn{1}{c}{$\cdots$}&21.5&2.24&\multicolumn{1}{c}{N}& & & PDR\\ 
87&(1400)&37.0&0.17&14.7&22.1&125.95&\multicolumn{1}{c}{N}\\
88&(2200)&30.0&\multicolumn{1}{c}{$\cdots$}&\multicolumn{1}{c}{$\cdots$}&21.8&99.04&\multicolumn{1}{c}{N}\\
89&(39)&11.3&\multicolumn{1}{c}{$\cdots$}&\multicolumn{1}{c}{$\cdots$}&20.9&14.16&
\multicolumn{1}{c}{N}& & & PDR\\ \hline
54&(1100)&22.5&0.24&12.1&22.5&1.05 & Y&Wings&Methanol&PDR/UCHII?\\ 
55&350&35.0&0.18&13.2&22.2&2.29
&Y& Red wing&H$_2$O&\\ 
64&14~000&24.2&0.08&11.3&22.0&19.66&Y& Wings&H$_2$O/Methanol&PDR/UCHII\\
65&1100&18.8&0.17&7.9&22.0&4.88&Y& & & PDR/UCHII?\\
68&(3400)&25.4&0.19&12.9&22.4&18.39&Y&Wings&H$_2$O/Methanol&PDR\\
69&(1300)&20.0&\multicolumn{1}{c}{$\cdots$}&\multicolumn{1}{c}{$\cdots$}&21.3&21.16
&\multicolumn{1}{c}{Y}& &  &PDR\\ 
71&1500&20.2&0.19&11.7&22.3&\multicolumn{1}{c}{$\cdots$}&\multicolumn{1}{c}{Y}&Blue wing&H$_2$O&\\
72&(1800)&31.3&0.09&15.5&22.0&81.39&Y&Red wing&&\\
74&5500&26.2&0.01&29.8&22.0&5.42&Y& &&UCHII\\
75&34~000&41.9&0.20&19.7&22.8&178.60&Y& &Methanol&PDR\\ 
76&5600&35.3&0.04&22.2&22.1&107.15&Y& &H$_2$O&PDR\\
79&(4400)&49.0&0.18&18.7&22.7&157.36&Y& & H$_2$O&UCHII\\ 
82&(1500)&31.6&0.17&14.2&22.4&1.08&Y& & & PDR\\
85&18~000&36.0&0.05&11.4&22.7&1.08&Y&Red wing&Methanol&PDR/UCHII\\ \hline
\end{tabular}}
\smallskip
$^a$ This sample includes all BRCs that show no evidence that they are being photoionised and therefore any star formation occurring within them is unlikely to have been triggered.\\
$^b$ This sample includes all sources found to be associated with a PDR or IBL and are therefore thought to be good candidates for triggered star formation.
\end{table}