English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Some evolved stars in the pre‐planetary nebula phase produce highly collimated molecular outflows that resemble the accretion‐driven jets and outflows from pre‐main‐sequence stars. We show that IRAS 16342−3814 (the Water Fountain Nebula) is such an object and present  K ‐band integral field spectroscopy revealing a fast (&gt;150 km s −1 ) bipolar H 2  outflow. The H 2  emission is shock excited and may arise in fast‐moving clumps, accelerated by the previously observed precessing jet. The total luminosity in H 2  is 0.37 L ⊙ , which is comparable with that of accretion‐powered outflows from Class 0 protostars. We also detect CO overtone bandhead emission in the scattered continuum, indicating hot molecular gas close to the centre, a feature also observed in a number of protostars with active jets. It seems likely that the jet and outflow in IRAS 16342−3814 are powered by accretion on to a binary companion.

A fast bipolar H 2 outflow from IRAS 16342−3814: an old star reliving its youth