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arXiv · 2007.15186

Multiwavelength investigation of extended green object G19.88-0.53: Revealing a protocluster

Namitha Issac·Anandmayee Tej·Tie Liu·Watson Varricatt·Sarita Vig·Ishwara Chandra C. H.·Mathias Schultheis·Govind Nandakumar
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Abstract

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.

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Namitha Issac, Anandmayee Tej, Tie Liu, Watson Varricatt, Sarita Vig, Ishwara Chandra C. H., Mathias Schultheis, Govind Nandakumar. 2020-07-30. Multiwavelength investigation of extended green object G19.88-0.53: Revealing a protocluster. https://doi.org/10.1093/mnras%2Fstaa2301

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