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Anandmayee Tej

Probing high-mass star formation in the outflow source G12.42+0.50

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Mots-clés : régions HII, jets, objets individuels, G12.42+0.50


This talk is based on the paper “Initial phases of high-mass star formation: A multiwavelength study towards the extended green object G12.42+0.50” by Namitha Issac, Anandmayee Tej, Tie Liu, Watson Varricatt, Sarita Vig, Ishwara Chandra CH and Mathias Schultheis and has been accepted for publication in MNRAS. A multiwavelength study of the extended green object G12.42+0.50 is presented. The associated ionized, dust, and molecular components of this source is probed using various observations at near- and far-infrared, submillimeter and radio wavelengths. The radio continuum emission mapped at 1390 and 610 MHz calls for a scenario of co-existence of an ultracompact (UC) H II region with an ionized jet possibly powered by the same young stellar object (YSO). Shock-excited lines of H2 and [Fe II] seen in the NIR spectra provide support to this picture. Study of the gas kinematics of the molecular cloud reveals the presence of both infall activity and large-scale molecular outflow, suggesting an early stage of massive star formation in G12.42+0.50.

Keywords : HII regions, jets and outflows, individual objects, (G12.42+0.50)

To cite this article

Anandmayee Tej, «Probing high-mass star formation in the outflow source G12.42+0.50», Bulletin de la Société Royale des Sciences de Liège [En ligne], Volume 88 - Année 2019, Actes de colloques, 2nd Belgo-Indian Network for Astronomy & Astrophysics (BINA) workshop - October 2018 - Brussels, Belgium, 224 - 239 URL :

About: Anandmayee Tej

Indian Institute of Space Science and Technology, Thiruvananthapuram 695 547, Kerala, India