Abstract
Infrared Dark Clouds (IRDCs) are the cold T < 25 K) and dense (> 10^{5} cm^{-3}) regions, with a scale of 1 - 10 pc and a mass of 10× ^{2-5}M_{odot}. Cores within the IRDCs may be in different phases, from a quiescent to an active one. Quiescent cores represent the earliest protostellar (starless) core phase without infrared signatures of star formation, commonly observed at far IR wavelengths, while active cores have extended and enhanced 4.5μm emission. In this work, we analyze CO(2-1), 13CO(2-1), and CO(2-1) lines, and mid- and far-infrared data towards the EGOS (Extended Green Objects) G341.23-0.27 and G341.22-0.26(a), projected onto the IRDC G341.24-0.27.
