VLT/MUSE discovers a jet from the evolved B[e] star MWC 137
A. Mehner, W.J. de Wit, J.H. Groh, R.D. Oudmaijer, D. Baade, T., Rivinius, F. Selman, H.M.J. Boffin, C. Martayan

TL;DR
This study uses VLT MUSE observations to discover a jet from the evolved B[e] star MWC 137, providing evidence for its post-main sequence status and clarifying its evolutionary classification.
Contribution
First detection of a collimated jet from MWC 137, supporting its classification as an evolved star and linking jet activity to its evolutionary stage.
Findings
Discovered a 1.7 pc jet with knots and high velocities
Estimated cluster distance at 5.2 kpc and age at least 3 Myr
Determined extinction values and confirmed post-main sequence status
Abstract
Not all stars exhibiting the optical spectral characteristics of B[e] stars share the same evolutionary stage. The Galactic B[e] star MWC 137 is a prime example of an object with uncertain classification, with previous work suggesting pre- and post-main sequence classification. Our goal is to settle this debate and provide reliable evolutionary classification. Integral field spectrograph observations with VLT MUSE of the cluster SH 2-266 are used to analyze the nature of MWC 137. A collimated outflow is discovered that is geometrically centered on MWC 137. The central position of MWC 137 in the cluster SH 2-266 within the larger nebula suggests strongly that it is a member of this cluster and that it is both at the origin of the nebula and the newly discovered jet. Comparison of the color-magnitude diagram of the brightest cluster stars with stellar evolutionary models results in a…
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