ASTE observations in the 345 GHz window towards the HII region N113 of the Large Magellanic Cloud

Aims. The HII region N113 is located in the central part of the Large Magellanic Cloud (LMC) with an associated molecular cloud that is very rich in molecular species. Most of the previously observed molecular lines cover the frequency range 85–270 GHz. Thus, a survey and study of lines at the 345 GHz window is required for a more complete understanding of the chemistry and excitation conditions of this region. Methods. We mapped a region of 2. 5 × 2. � 5 centred at N113 using the Atacama Submillimeter Telescope Experiment in the 13 CO J = 3−2 line with an angular and spectral resolution of 22 �� and 0.11 km s −1 . In addition, we observed 16 molecular lines as single pointings towards its centre. Results. From the 13 CO J = 3−2 map we estimate the local thermodynamic equilibrium (LTE) and virial masses in about 1 × 10 4 and