Millimeter and Far-IR Study of the IRDC SDC 341.232-0.268

M. M. Vazzano ... [et al.].

Serie: Trabajos publicados del IAR ; no. 1521

Resumen: We analyze the molecular gas and dust associated with the infrared darkcloud SDC 341.232-0.268 in order to investigate the characteristics andparameters of the gas, determine the evolutionary status of fourembedded EGO candidates, and establish possible infall or outflow gasmotions. We base our study on ¹²CO(2-1),¹³CO(2-1), and C¹⁸O(2-1) data obtained with theAPEX telescope, molecular data of high density tracers from the MALT90survey and IR images from Spitzer, Herschel and ATLASGAL. The studyreveals two clumps at âˆ'44kms^âˆ'1 towards the IRDC, withdensities of > 10⁴cm^âˆ'3, typical of IRDCs, whilehigh density tracers show H₂ densities >10⁵.FIR images reveals the presence of cold dust linked to the molecularclumps and EGOs. A comparison of the spectra of the optically thin andoptically thick molecular lines towards the EGOs suggests the existenceof infall and outflow motions