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We are performing a systematic study of the interstellar medium aroundextended green objects (EGOs), likely massive young stellar objects drivingoutflows. EGO G35.04-0.47 is located towards a dark cloud at the northern-westedge of an HII region. Recently, H2 jets were discovered towards this source,mainly towards its southwest, where the H2 1-0 S(1) emission peaks. Therefore,the source was catalogued as the Molecular Hydrogen emission-line object MHO2429. In order to study the molecular ambient towards this star-forming site,we observed a region around the aforementioned EGO using the AtacamaSubmillimeter Telescope Experiment in the 12CO J=3--2, 13CO J=3--2, HCO+J=4--3, and CS J=7--6 lines with an angular and spectral resolution of 22" and0.11 km s-1, respectively. The observations revealed a molecular clump wherethe EGO is embedded at v_LSR ~ 51 km s-1, in coincidence with the velocity of aClass I 95 GHz methanol maser previously detected. Analyzing the 12CO line wediscovered high velocity molecular gas in the range from 34 to 47 km s-1, mostlikely a blueshifted outflow driven by the EGO. The alignment and shape of thismolecular structure coincide with those of the southwest lobe of MHO 2429mainly between 46 and 47 km s-1, confirming that we are mapping its COcounterpart. Performing a SED analysis of EGO G35.04-0.47 we found that itscentral object should be an intermediate-mass young stellar object accretingmass at a rate similar to those found in some massive YSOs. We suggest thatthis source can become a massive YSO.

Studying the Molecular Ambient towards the Young Stellar Object EGO G35.04-0.47