Details

Autor(en) / Beteiligte

• Issac, Namitha
• Tej, Anandmayee
• Liu, Tie
• Varricatt, Watson
• Vig, Sarita
• Ishwara Chandra, C H
• Schultheis, Mathias
• Nandakumar, Govind

Titel

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

Ist Teil von

• Monthly notices of the Royal Astronomical Society, 2020-10, Vol.497 (4), p.5454-5472

Ort / Verlag

Oxford University Press

Erscheinungsjahr

2020

Quelle

EZB Electronic Journals Library

Beschreibungen/Notizen

• 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 UCH ii regions.