Multiwavelength investigation of extended green object G19.88-0.53:
  Revealing a protocluster
  A multiwavelength analysis of star formation associated with the extended
green object, G19.88-0.53 is presented in this paper. With multiple detected
radio and millimetre components, G19.88-0.53 unveils as harbouring a
protocluster rather than a single massive young stellar object. We detect an
ionized thermal jet using the upgraded Giant Meterwave Radio Telescope, India,
which is found to be associated with a massive, dense and hot ALMA 2.7 mm core
driving a bipolar CO outflow. Near-infrared spectroscopy with UKIRT-UIST shows
the presence of multiple shock-excited H2 lines concurrent with the nature of
this region. Detailed investigation of the gas kinematics using ALMA data
reveals G19.88-0.53 as an active protocluster with high-mass star forming
components spanning a wide evolutionary spectrum from hot cores in accretion
phase to cores driving multiple outflows to possible UCHII regions.
