Bright Rimmed clouds (BRCs) are small molecular clouds located at the periphery of
evolved HII regions with their 'bright rims' facing towards ionising star(s) side. They are
believed to be the potential sites of triggered star formation due to the pressure exerted by the
incoming ionising radiation from the massive ionising star(s). Thus, they are good examples
of the radiation driven implosion (RDI) mode of triggered star formation. But, star formation
frequency, star formation efficiency and stellar mass function due to RDI are still unknown.
Details of RDI mode can be acquired by observing a number of BRCs that are classified as
triggered and non-triggered based on previous studies. For this purpose, pilot study has been
done on two BRCs, namely SFO 18 and SFO 38 which are considered as non-triggered and
triggered respectively. We have mapped thsese BRCs with 12CO, C18O, N2H+ and HCN (J=1-
0 transition) lines to understand the dynamics, excitation temperature, column density and
optical depth traced by these lines. By using continuum emissions in far-infrared region we
have estimated dust temperature, spectral emissivity index and other physical parameters of
the dust present in these two BRCs. Priliminary results will be discussed in my talk.