Program: GN-2024A-FT-103

Title:Characterising a low-metallicity massive protostellar jet
PI:Samuel Crowe
Co-I(s): Morten Andersen, Ruben Fedriani, Yu Cheng

Abstract

Although low-mass star formation is relatively well understood, there are still fundamental questions concerning the formation of massive stars, above 8 Msun, in particular in metal-poor environments. We have recently identified a massive outflow from a low-metallicity massive star-forming region sh284 in the outer Galaxy using JWST/NIRCam observations. Here we propose Gemini GNIRS H and K band spectroscopy to characterise the Eastern side of the outflow, and determine the radial velocity, temperature and column density of the jet knots. This will allow a detailed comparison of this low-metallicity massive jet with those observed nearby from low-mass solar metallicity protostars. With both sides covered any assymetry in the jet can be detected. The observations will further facilitate the development of a novel method for generating ro-vibrational diagrams based solely on JWST-NIRCam imaging data.