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 Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

Investigating Protostellar Accretion (IPA) is a Cycle 1 JWST program usingthe NIRSpec+MIRI IFUs to obtain 2.9--28 $\mu$m spectral cubes of five youngprotostars with luminosities of 0.2 to 10,000 L$_{\odot}$ in their primaryaccretion phase. This paper introduces the NIRSpec 2.9--5.3 $\mu$m data of theinner 840-9000 au with spatial resolutions from 28-300 au. The spectra showrising continuum emission, deep ice absorption, emission from H$_{2}$, H~I, and[Fe~II], and the CO fundamental series in emission and absorption. Maps of thecontinuum emission show scattered light cavities for all five protostars. Inthe cavities, collimated jets are detected in [Fe~II] for the four $<320$~L$_{\odot}$ protostars, two of which are additionally traced inBr-$\alpha$. Knots of [Fe~II] emission are detected toward the most luminousprotostar, and knots of [FeII] emission with dynamical times of $< 30$~yrs arefound in the jets of the others. While only one jet is traced in H$_2$, knotsof H$_2$ and CO are detected in the jets of four protostars. H$_2$ is seenextending through the cavities showing they are filled by warm molecular gas.Bright H$_2$ emission is seen along the walls of a single cavity, while inthree cavities, narrow shells of H$_2$ emission are found, one of which has an[Fe~II] knot at its apex. These data show cavities containing collimated jetstraced in atomic/ionic gas surrounded by warm molecular gas in a wide-anglewind and/or gas accelerated by bow shocks in the jets.

Investigating Protostellar Accretion-Driven Outflows Across the Mass Spectrum: JWST NIRSpec IFU 3-5~$\mu$m Spectral Mapping of Five Young Protostars