A spectacular jet from the bright 244-440 Orion proplyd: The MUSE NFM view

Vol. 673
6. Interstellar and circumstellar matter

A spectacular jet from the bright 244-440 Orion proplyd: The MUSE NFM view

by A. Kirwan, C.F. Manara, E.T. Whelan, et al. 2023, A&A, 673, A166 alt

The life of a protostar is brief and dynamic. It is embedded in a disk and drives outflows that impact its nascent surrounding cloud. This study presents a detailed unfolding of the very extended jet emerging from a low mass protostellar disk in the Orion nebula. Although the jet has been studied in the past as a one-sided structure, the authors have succeeded in finding the oppositely oriented component. With this, using spatially resolved spectroscopy, they determine the density and velocity structure of the outflow, from which they place limits on the rate of mass loss and momentum transfer. Most notable is their discovery and analysis of its corkscrew structure, which they interpret as arising from the orbital motion of a component in a low mass binary system, the first such system uncovered from its jet.