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

This work presents ground-based spectrally-resolved water emission at R =30000-1 over infrared wavelengths covered by JWST (2.9-12.8 $\mu$m). Twonew surveys with iSHELL and VISIR are combined with previous spectra fromCRIRES and TEXES to cover parts of multiple ro-vibrational and rotational bandsobservable within telluric transmission bands, for a total of $\approx160$spectra and 85 disks (30 of which are JWST targets in Cycle 1). The generalexpectation of a range of regions and excitation conditions traced by infraredwater spectra is for the first time supported by the combined kinematics andexcitation as spectrally resolved at multiple wavelengths. The main findingsfrom this analysis are: 1) water lines are progressively narrower from thero-vibrational bands at 2-9 $\mu$m to the rotational lines at 12 $\mu$m, andpartly match a broad (BC) and narrow (NC) emission components, respectively, asextracted from ro-vibrational CO spectra; 2) rotation diagrams of resolvedwater lines from upper level energies of 4000-9500 K show vertical spread andcurvatures indicative of optically thick emission ($\approx 10^{18}$ cm$^{-2}$)from a range of excitation temperatures ($\approx 800$-1100 K); 3) the new 5$\mu$m spectra demonstrate that slab model fits to the rotational lines at $>10$ $\mu$m strongly over-predict the ro-vibrational emission bands at $< 9$$\mu$m, implying non-LTE vibrational excitation. We discuss these findings inthe context of emission from a disk surface and a molecular inner disk wind,and provide a list of guidelines to support the analysis ofspectrally-unresolved JWST spectra.

the astronomical journal

The kinematics and excitation of infrared water vapor emission from  planet-forming disks: results from spectrally-resolved surveys and guidelines  for JWST spectra