Continuum Imaging of Three High-Mass Star Forming Regions

High spectral and angular resolution Very Large Array observations at 1.3 cm of three radio continuum sources with methanol and ammonia lines were made by our group to investigate the kinematics of molecular gas associated with the jets and determine the nature of the emission. We imaged the continuum of the three sources using one of the narrow spectral windows (SPWs) and compared it to the continuum from three broadband SPWs as well as with previous continuum measurements reported by Rosero et al. (2016) to check for consistency in the flux density calibration. The radio continuum from the narrow SPWs was in agreement with the continuum measurements from Rosero et al. (2016) for all three sources. However, the continuum from the broad-band SPWs was inconsistent for one of the sources. We are exploring whether calibration errors or the extended nature of the radio emission is responsible for this discrepancy.