Methanol masers and outflows in massive star forming regions

We report the detection of multiple star forming cores, outflows, and methanol masers in the two massive star forming regions, G10.34-0.14 and G10.32-0.26, observed with the ALMA and the VLA telescopes in an angular resolution of 0.3 arcsec. Using the combined results of the ALMA and the VLA, we studied 1) the evolutionary stages and the masses of the central young stellar objects/protostars and 2) the properties of the 44 and 95GHz methanol maser transition lines. We also report the polarimetric observational results of the 44GHz methanol maser transition performed using the ALMA and the KVN telescopes. The results imply that 1) there are multiple central targets at different evolutionary stages and masses, 2) the observational properties of the 44 and 95GHz masers are closely associated, and 3) the magnetic field environments of the masing regions are consistent over a few AU to a few hundred AU scales.